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Journal articles on the topic 'ADI materials'

Author: Grafiati

Published: 4 June 2021

Last updated: 13 February 2022

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1

Sidjanin, Leposava, Milorad Novovic, and R. Smallman. "Metallographic Investigations of ADI Materials Metallographische Charakterisierung von ADI-Werkstoffen." Practical Metallography 33, no. 1 (January 1, 1996): 2–16. http://dx.doi.org/10.1515/pm-1996-330102.

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2

RAJNOVIC, D., O. ERIC, and L. SIDJANIN. "The standard processing window of alloyed ADI materials." Metallic Materials 50, no. 03 (2012): 199–208. http://dx.doi.org/10.4149/km_2012_3_199.

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3

Myszka, Dawid, Mostafa Ahmed, Adel Nofal, Emilia Skołek, and Abdelhamid Hussein. "High Strain Rate Dynamic Deformation of ADI." Materials Science Forum 925 (June 2018): 210–17. http://dx.doi.org/10.4028/www.scientific.net/msf.925.210.

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Engineering materials used in numerous applications, particularly in automotive crash loading and military ballistic purposes have to meet new demands, one of which is the resistance to dynamic loading. As the phenomena associated with such interaction is rather complex, non-static types of tests are applied to evaluate and compare between different potential materials. In this Work, different grades of ADI were produced under different austenitizing and austempering conditions different ausferrite morphologies. The effect of alloying elements such as Cu and Mo on the initial microstructure of the ductile iron was also studied. The initial amount of retained austenite was subjected to different dynamic strain rates. The hardness and strain induced martensitic transformation as a function of the microstructure and strain rate were evaluated. Extensive use of XRD and SEM was made to evaluate the high strain rate properties of the investigated grades.

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4

Sosa, Amadeo Daniel, Caren Soledad Rosales, Roberto Enrique Boeri, and Silvia Noemí Simison. "Corrosion mechanisms in ADI parts." International Journal of Cast Metals Research 29, no. 1-2 (March 2016): 106–11. http://dx.doi.org/10.1080/13640461.2015.1106784.

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5

Groche, P. Prof, P. Stein, M. Steitz, J. Scheil, and C. Prof Müller. "Maschinelle Werkzeugoberflächenbearbeitung von ADI*/Mechanical treatment of ADI tools - Smoothing and hardening of austempered ductile iron." wt Werkstattstechnik online 106, no. 10 (2016): 719–24. http://dx.doi.org/10.37544/1436-4980-2016-10-45.

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Hochfeste Tiefziehstähle und kurze Produktzyklen erfordern immer kürzere Amortisationszeiten der Werkzeuge. Daher wurden in den letzten Jahren neue Technologien zur automatisierten Oberflächenbearbeitung entwickelt. In den vorliegenden Untersuchungen wurde das Optimierungspotenzial einer Kombination aus automatisierter Oberflächenbearbeitung und lastangepasstem Werkstoff, sogenanntem Austempered Ductile Iron (ADI), ermittelt.   High-strength steel for deep-drawn products as well as brief product cycles require short time-to-values of tools. Thus, new technologies for automated surface treatments have been developed in the last years. Within the scope of the presented investigations, the potential for optimization of a combination of automated surface treatment and load-adjusted materials such as Austempered Ductile Iron (ADI) is examined.

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6

Sun, M. K., and W. Y. Tam. "Stability and dispersion analysis of ADI-MRTD and ADI high-order schemes." Microwave and Optical Technology Letters 45, no. 1 (2005): 43–46. http://dx.doi.org/10.1002/mop.20717.

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7

Pereda, José A., Ana Grande, Oscar González, and Angel Vegas. "The ADI-FDTD Method for Transverse-Magnetic Waves in Conductive Materials." IEEE Transactions on Antennas and Propagation 58, no. 8 (August 2010): 2790–93. http://dx.doi.org/10.1109/tap.2010.2050422.

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8

Meena, Anil, and Mohamed El Mansori. "Microstructure Induced Wear Mechanisms of PVD-Coated Carbide Tools during Dry Drilling of Newly Produced ADI." Key Engineering Materials 651-653 (July 2015): 1271–76. http://dx.doi.org/10.4028/www.scientific.net/kem.651-653.1271.

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Near-net shape austempered ductile iron (ADI) castings can be considered as a significant economic advantage to the increasing industrial demand for cost and weight efficient materials. However, due to microstructure induced inherent properties, ADI is considered as hard to machine material. The present paper thus investigates the interaction between the microstructural characteristics of ADI and wear mechanisms of PVD-coated carbide tools. The inherent properties of ADI materials are the function of its microstructural characteristics (retained austenite volume content and its carbon content, ferritic cell size, etc.) which can be controlled by the austempering parameters. Experimental studies of dry drilling of different ADI materials with the PVD-coated carbide tools were carried out at a cutting speed of 60 m/min and at a feed of 0.15 mm/rev. The wear mechanisms of the cutting tools were studied by using scanning electron microscopy (SEM) and energy dispersive spectroscopy (EDS) analysis techniques. The obtain results revealed the evolution of crater wear as the main wear mode. In addition, it provides the key findings aims to correlating the machining characteristics of ADI with its microstructure and production conditions.

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9

Ibrahim, K. M., B. El-Sarnagawy, I. I. Saleh, and M. Bayoumi. "Fatigue behaviour of notched ADI castings." International Journal of Cast Metals Research 27, no. 4 (February 21, 2014): 250–56. http://dx.doi.org/10.1179/1743133614y.0000000108.

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10

CALDERA, M., R. A. MARTÍNEZ, R. E. BOERI, and J. A. SIKORA. "Evaluation of water embrittlement on ‘dual phase’ ADI." Fatigue & Fracture of Engineering Materials & Structures 34, no. 10 (April 28, 2011): 774–81. http://dx.doi.org/10.1111/j.1460-2695.2011.01571.x.

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11

Wen, Fulin, Jianhua Zhao, Dengzhi Zheng, Ke He, Wei Ye, Shen Qu, and Jingjing Shangguan. "The Role of Bainite in Wear and Friction Behavior of Austempered Ductile Iron." Materials 12, no. 5 (March 6, 2019): 767. http://dx.doi.org/10.3390/ma12050767.

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The austempered ductile iron was austenitized at 900 °C for 1 h and quenched in an isothermal quenching furnace at 380 °C and 280 °C, respectively. This paper aims to investigate the effects of bainite on wear resistance of austempered ductile iron (ADI) at different loads conditions. The micro-structure and phase composition of ADI was characterized and analyzed by metallographic microscope (OM), X-ray diffractometer (XRD) and scanning electron microscope (SEM) with energy dispersive spectroscopy (EDS). The results showed that the volume fraction of retained austenite in ADI is reduced with the increase of austenitizing temperature. Meanwhile, the two kinds of ADI samples showed varied wear resistance when they were worn at different loads conditions. For wearing at a load of 25 N, the wear resistance of ADI mainly depends on matrix micro-hardness. Thus, ADI with lower bainite structure has higher hardness and leads to better wear resistance. When wearing at a load of 100 N, the increase of micro-hardness of upper bainite was significant. As a consequence, upper bainite showed superior friction and wear behavior. It was also found that the form of wear behavior of ADI changed from abrasive wear to fatigue delamination as the wear load increased from 25 N to 100 N according to the observation on worn surface.

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12

Sebastián, Laino, Jorge Antonio Sikora, and Ricardo C. Dommarco. "Advances in the Development of Carbidic ADI." Key Engineering Materials 457 (December 2010): 187–92. http://dx.doi.org/10.4028/www.scientific.net/kem.457.187.

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Carbidic ADI (CADI) is a new type of Austempered Ductile Iron containing free carbides in the microstructure, providing a particular combination of wear resistance and impact toughness. In this work, four CADI variants were evaluated, in which carbides were promoted by alloying with chromium. Tests performed under the low stress abrasion condition imposed by the ASTM G65 standard show that CADI can increase the wear resistance up to 100 % when compared with conventional ADI austempered at the same temperature. The carbide content must be higher than 10 % to promote a considerable reinforcing effect. However, at this carbide content level, the impact toughness varies between 7 and 11 J/cm2 for unnotched samples. These values are much lower than those of conventional ADI, but higher than those of other abrasion resistant materials, like white irons. Some CADI variants were also evaluated in field tests, producing abrasion under either low stress or high stress conditions. For this purpose, two CADI prototype parts were studied: screw segments for animal food extruders (low stress abrasion) and wheel loader bucket edges (high stress abrasion). The results gathered showed that CADI behaves satisfactorily under low stress abrasion, but the performance is not so good under high stress conditions. To analyze the differences in the abrasion response, scratch tests were performed in order to evaluate the interaction between the abrasive tip and the microstructure.

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13

Sun, D. Q., X. Y. Gu, W. H. Liu, and Z. Z. Xuan. "Welding consumable research for austempered ductile iron (ADI)." Materials Science and Engineering: A 402, no. 1-2 (August 2005): 9–15. http://dx.doi.org/10.1016/j.msea.2005.01.034.

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14

Putatunda, Susil K., Leslie Bartosiewicz, Robert J. Hull, and Michael Lander. "Laser Hardening of Austempered Ductile Cast Iron (ADI)∗." Materials and Manufacturing Processes 12, no. 1 (January 1997): 137–51. http://dx.doi.org/10.1080/10426919708935127.

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15

Ramadan, Omar. "Unconditionally Stable Z-Transform ADI-PML Algorithm for Lorentzian Double Negative Meta-Materials." International Journal of Infrared and Millimeter Waves 26, no. 12 (November 28, 2005): 1757–70. http://dx.doi.org/10.1007/s10762-005-0295-2.

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16

Böhme, Wolfgang, and Lutz Reissig. "Capability of New High Strength ADI-Materials for Automotive Components under Crash Loading." Advanced Engineering Materials 17, no. 8 (January 15, 2015): 1189–96. http://dx.doi.org/10.1002/adem.201400435.

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17

Petersen, DR, RE Link, SK Putatunda, and I. Singh. "Fracture Toughness of Unalloyed Austempered Ductile Cast Iron (ADI)." Journal of Testing and Evaluation 23, no. 5 (1995): 325. http://dx.doi.org/10.1520/jte11401j.

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18

Leonavičius, Mindaugas, Algimantas Krenevičius, Marijonas Šukšta, and Jukka Posa. "THE INVESTIGATION AND PECULIARITIES OF CALCULATION OF TRANSPORT MACHINE ELEMENTS MADE OF AUSTEMPERED DUCTILE IRON." TRANSPORT 18, no. 4 (June 30, 2003): 162–67. http://dx.doi.org/10.3846/16483840.2003.10414089.

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In this article the statical and cyclical strength investigations of austempered ductile cast iron (ADI) are presented. ADI material becomes more and more popular. Ductile iron is lighter than steel and its mechanical properties are better. ADI has good resistance to fatigue, high tensile strength, toughness and ductility. The fatigue crack initiation generally occurs in the graphite matrix. In the work the kinetic fatigue diagrams, longevity distributions laws and the mathematical model of crack growth ratio are described. The blanks of material were cut from a tooth of gear. Structure of the material consists of bainite and spherical graphite. The mechanical properties of ADI were obtained with assessment of chemical composition. The detennined statical mechanical properties of two different ADI materials are presented. The compact specimen was produced in order to detennine a threshold stress intensity factor. According to the investigations the stress intensity factor (threshold) is ΔK th = 9,8 MPa√m for the ADI 6.2.02 and ΔK th = 8,6 MPa√m for the ADI 9.4.02. The carried out investigations are insufficient for the complete evaluation of austempered ductile iron for the production of transport equipment elements.

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19

Xue, Xiao Hong, Xu Hong Guo, Ting Ting Chen, Dong Dong Wan, and Qiao Wang. "Research on the Surface Roughness of Dry Cutting Different Levels of Austempering Ductile Iron (ADI)." Key Engineering Materials 464 (January 2011): 496–500. http://dx.doi.org/10.4028/www.scientific.net/kem.464.496.

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Three cutting tools of different materials (ceramics CC6050, cubic boron nitride CB7025, carbide GC2025) are used for dry turning of 9 groups of ADI which heat-treated under different quenching time and quenching temperature. The surface roughness of ADI workpieces were tested after the finish turning at changed cutting parameters, and the influencing factors of surface quality were analysed. Results showed that the surface roughness values of all 9 groups of ADI workpieces obtained by CC6050 were the lowest and the surface quality was better at lower depth of cut ap and feed rate f with higher cutting speed vc . Meanwhile, the surface roughness was influenced by the isothermal quenching parameters of ADI workpieces significantly.

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20

dos Santos, D., U. Vroomen, and A. Bührig-Polaczek. "ADI Lost-Foam: Synergy of Process and Material." Advanced Engineering Materials 9, no. 4 (April 2007): 259–64. http://dx.doi.org/10.1002/adem.200700027.

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21

CHAPETTI, M. "High-cycle fatigue of austempered ductile iron (ADI)." International Journal of Fatigue 29, no. 5 (May 2007): 860–68. http://dx.doi.org/10.1016/j.ijfatigue.2006.09.005.

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22

Janjatovic, Petar, Olivera Eric Cekic, Leposava Sidjanin, Sebastian Balos, Miroslav Dramicanin, Jasmina Grbovic Novakovic, and Dragan Rajnovic. "The Effect of Water Concentration in Ethyl Alcohol on the Environmentally Assisted Embrittlement of Austempered Ductile Irons." Metals 11, no. 1 (January 5, 2021): 94. http://dx.doi.org/10.3390/met11010094.

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Austempered ductile iron (ADI) is an advanced cast iron material that has a broad field of application and, among others, it is used in contact and for conveyance of fluids. However, it is noticed that in contact with some fluids, especially water, ADI material becomes brittle. The most significant decrease is established for the elongation. However, the influence of water and the cause of this phenomenon is still not fully understood. For that reason, in this paper, the influence of different water concentrations in ethyl alcohol on the mechanical properties of ADI materials was studied. The test was performed on two different types of ADI materials in 0.2, 4, 10, and 100 vol.% water concentration environments, and in dry condition. It was found that even the smallest concentration of water (0.2 vol.%) causes formation of the embrittled zone at fracture surface. However, not all mechanical properties were affected equally and not all water concentrations have been critical. The highest deterioration was established in the elongation, followed by the ultimate tensile strength, while the proof strength was affected least.

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23

Mebrahtu, Gebreslassie, Solomun Atsbaha, and Berihu Abadi Berhe. "Vertical Electrical Sounding (VES) investigation for road failure along Mekelle – Abi-Adi road segment, northern Ethiopia." Momona Ethiopian Journal of Science 13, no. 1 (August 15, 2021): 134–46. http://dx.doi.org/10.4314/mejs.v13i1.7.

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Roads constructed along the mountainous terrains of Ethiopia are susceptible to landslides mostly during rainy season. Mekelle – Abi Adi road is one of the economically important road corridors that connects many towns with Mekelle city. However, the asphalt road segment is heavily affected by quasi-translational type of landslide which hinders traffic flow of the area. Vertical electrical sounding (VES) method was applied to investigate subsurface geology of the road failure along Mekelle – Abi-Adi asphalt road, northern Ethiopia. The geo-electric section result revealed that the shallow subsurface geology of the site is characterized by four distinct geological formations, from top to bottom are: shale, shale-limestone intercalation, limestone and shale-gypsum units. The subgrade of the failed road section is shale unit which is overlain by jointed sandstone unit. The sandstone unit serves as a recharge zone to the bottom shale layer by percolating water via sub-base fill materials which in turn blocks vertical percolation and promote seepage force to the overlying soil mass. Hence, the road failure in the study area seems to be caused due to the development of pore water pressure in the shale layer which soaked water during heavy rainfall. The recommended remedial method for the road failure is re-designing of the affected route from chainage 48 km+850 m to 49 km+250 m towards the northwest of the study area and excavates the top 6 m shale unit.

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24

Putatunda, Susil K., Sharath Kesani, Ronald Tackett, and Gavin Lawes. "Development of austenite free ADI (austempered ductile cast iron)." Materials Science and Engineering: A 435-436 (November 2006): 112–22. http://dx.doi.org/10.1016/j.msea.2006.07.051.

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25

Hegde, Ananda, Sathyashankara Sharma, and Gowri Shankar M. C. "Machinability and related properties of austempered ductile iron: A review." Journal of Mechanical Engineering and Sciences 12, no. 4 (December 27, 2018): 4180–90. http://dx.doi.org/10.15282/jmes.12.4.2018.14.0360.

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When the ductile iron which is also known as Spheroidal Graphite (SG) iron, is subjected to austempering heat treatment, the material is known as austempered ductile iron (ADI). This material has good mechanical properties and has various applications in different fields. This revolutionary material with its excellent combination of strength, ductility, toughness and wear resistance has the potential to replace some of the commonly used conventional materials such as steel, aluminium and other light weight alloys as it offers production advantage as well. One of the problems encountered during manufacturing is machining of ADI parts owing to its high hardness and wear resistance. Many researchers over a period of time have reported the machinability aspects of the ADI. This paper presents a review on the developments made on the machinability aspects of ADI along with other mechanical properties.

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26

Pereda, J. A., A. Grande, O. Gonzalez, and A. Vegas. "Analysis of Two Alternative ADI-FDTD Formulations for Transverse-Electric Waves in Lossy Materials." IEEE Transactions on Antennas and Propagation 57, no. 7 (July 2009): 2047–54. http://dx.doi.org/10.1109/tap.2009.2021927.

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27

JEŠIĆ, Dušan, Pavel KOVAČ, Dragan Rodić, Borislav SAVKOVIĆ, Dražen SARJANOVIĆ, and Željko ALEKSIĆ. "RESEARCH OF TRIBOLOGICAL CHARACTERISTICS OF ADI IN CONTACT WITH MODIFICIETED MATERIALS WITH DIFFERENT COATTINGS." Proceedings on Engineering Sciences 1, no. 1 (May 2019): 188–92. http://dx.doi.org/10.24874/pes01.01.024.

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28

Batra, Uma, Subrata Ray, and S. R. Prabhakar. "Impact Properties of Copper-Alloyed and Nickel-Copper Alloyed ADI." Journal of Materials Engineering and Performance 16, no. 4 (May 8, 2007): 485–89. http://dx.doi.org/10.1007/s11665-007-9069-4.

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29

Guo, Xu Hong, Chang Liu, and Quan Zhang. "The Heat Treatment Parameters and Microconstituent Content Prediction of ADI Based on Fuzzy Subtractive Clustering Method." Materials Science Forum 704-705 (December 2011): 586–91. http://dx.doi.org/10.4028/www.scientific.net/msf.704-705.586.

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Ductile cast iron was quenched at different austempering temperatures with different isothermal time, so there were austempered ductile iron (ADI) materials with nine different mechanical properties. Their metallographic structures were qualitatively and quantitatively analyzed with scanning electron microscope and X-ray diffraction method. Curves of the relationships between heat treatment parameters, content of retained austenite and carbon content in retained austenite were studied respectively. Models that showed their relationships were built in the base of fuzzy subtractive clustering method to research the rules of isothermal temperatures and time affecting the microconstituent of ADI. The results show that the metallographical matrix structures of ADI become ausferrite, and its mechanical properties are strengthened notably. From the curves and fuzzy models, we knew that the effect of austempering temperature on the component content of ADI was predominant, and austempering time was inferior. Thus, as the temperature increased, the content of retained austenite, carbon content in retained austenite increased markedly. Keywords: ADI, heat treatment parameters, retained austenite, carbon content of retained austenite, fuzzy subtractive clustering model

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30

Fernández, A., Gorka Urbikain Pelayo, A. Rodríguez, A. Calleja, and L. N. López de Lacalle. "Mechanistic Model for High Speed Turning of Austempered Ductile Irons." Advanced Materials Research 498 (April 2012): 163–68. http://dx.doi.org/10.4028/www.scientific.net/amr.498.163.

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This work proposes a mechanistic model to predict the cutting forces during machining of low machinability materials such as austempered ductile irons (ADI). For these cases, commonly used models are not accurate due to high rates of wear and a new coefficient is necessary to correctly estimate the cutting forces against time. As well, ceramic inserts are applied for the first time in dry turning of ADI.

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31

Accorsi Gans, Luiz Henrique, Wilson Luiz Guesser, Marco Antonio Luersen, and Carlos Henrique da Silva. "Numerical Analysis of the Influence of Graphite Nodule Size on the Pitting Resistance of Austepered Ductile Iron Gears." Advanced Materials Research 1120-1121 (July 2015): 763–72. http://dx.doi.org/10.4028/www.scientific.net/amr.1120-1121.763.

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In this work, an experimental study of wear evaluation in combination with a finite element analysis (FEA) was carried out for austempered ductile iron (ADI) used in gears. Two different ADI materials were used to produce gears which were tested in a FZG back-to-back test rig. The experimental results were compared to those of carburized AISI 8620 steel and induction hardened AISI 4140 steel gears. The wear resistance for pitting and spalling on the gears surfaces were measured using image analysis. Comparing the two types of ADI, the one with smaller nodules showed a higher pitting resistance. In contact fatigue tests with severe load, the carburized AISI 8620 steel proved to be superior to ADI. However, ADI with smaller nodule size presented wear resistance similar to that of induction hardened AISI 4140 steel. The FEA was conducted using the commercial code ANSYS 11.0 and aimed to provide a better understanding of the microstructural effect on the stress state of subsurface regions. From the numerical results in ADIs, it was concluded that the nodule size affects the gears life independently of the mechanical properties of the matrix. The size and number of nodules affects both the nucleation and the propagation stages of cracks. ADIs with higher amount of nodules have a superior wear resistance by pitting. Also, compared to the Hertz contact theory (valid for isotropic materials), the presence of graphite nodules induced the maximum shear stress point moves toward the surface.

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32

Stefański, T., and T. D. Drysdale. "Parallel implementation of the ADI-FDTD method." Microwave and Optical Technology Letters 51, no. 5 (March 13, 2009): 1298–304. http://dx.doi.org/10.1002/mop.24310.

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33

Janjatovic, Petar, Cekic Eric, Dragan Rajnovic, Sebastian Balos, Vencislav Grabulov, and Leposava Sidjanin. "Microstructure and fracture mode of unalloyed dual phase austempered ductile iron." Chemical Industry and Chemical Engineering Quarterly, no. 00 (2021): 27. http://dx.doi.org/10.2298/ciceq201222027j.

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Dual phase ADI material microstructure consists of different amounts and morphologies of ausferrite and free ferrite, obtained by subjecting ductile iron to specific heat treatment. As such, its strength is lower compared to comparable ADI materials, but exhibiting a higher ductility, the major disadvantage of ADI. In the current study, an unalloyed ductile iron was intercritical austenitised in two-phase regions (?+?) at four temperatures from 840 to 780?C for 2 hours and austempered at 400?C for 1 hour to obtain dual phase ADI with different percentages of free ferrite and ausferrite. Metallographic and fracture studies were performed by light and scanning electron microscopy, respectively. Microscopy results were correlated to tensile testing results. The results indicated that, as the amount of ausferrite present in the matrix increases, higher values of strength and lower ductility are obtained. The fracture surfaces of dual phase ADI microstructures with 22.8% of ausferrite in their matrix have regions of quasi-cleavage fracture around last-to-freeze zones, related to the presence of ausferrite in those areas. The specimens with the highest values of ausferrite of 86.8% among the dual phase microstructure have a dominant quasi-cleavage type of fracture.

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34

Hsu, Cheng Hsun, Jung Kai Lu, and Ming Li Chen. "Study on Characteristics of ADI Coated DLC/ TiN /TiAlN Coatings by Cathodic Arc Evaporation." Solid State Phenomena 118 (December 2006): 257–64. http://dx.doi.org/10.4028/www.scientific.net/ssp.118.257.

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In this study, austempered ductile iron (ADI) substrate containing acicular ferrite and high-carbon austenite in the microstructure is made by austempering treatment at 360. Cathodic arc evaporation (CAE) coating technique was used to coat DLC, TiN and TiAlN films on ADI for surface modification. The results showed that the three coatings could be successfully coated onto ADI through CAE process without altering the unique microstructure of ADI. The structures of the coatings were identified by XRD, Raman and TEM, respectively. After HRC indentation testing, it was found that nodular graphite was the initial site of cracking for the coatings and then peeled. Surface roughness of all coated specimens was increased because the droplets generated on the substrate surface during the CAE process. Coated ADI had better wearability performance than uncoated ADI due to higher surface hardness. Coated specimens exhibited higher corrosion resistance than uncoated ones when they were immersed in separate solutions of both 3.5 wt. % NaCl and 10 vol. % HCl. In particular, TiAlN had the best corrosion resistance among the coated specimens.

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35

Pepe, Andrés, Pablo Galliano, Silvia Ceré, M. Aparicio, and A. Durán. "Hybrid silica sol–gel coatings on Austempered Ductile Iron (ADI)." Materials Letters 59, no. 17 (July 2005): 2219–22. http://dx.doi.org/10.1016/j.matlet.2005.03.001.

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36

Labbe, Eric, Florin Serban, Mircea Nicoară, and Alain Lodini. "Evaluation of the Residual Stresses and Determination of the Proportion of Residual Austenite in an Austempered Ductile Iron Having Undergone Thermo Mechanical Treatments." Materials Science Forum 571-572 (March 2008): 95–100. http://dx.doi.org/10.4028/www.scientific.net/msf.571-572.95.

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The constant reduction of production costs and the development of materials during recent years are favoured the development of Austempered Ductile Iron (ADI) because of favourable combination of technological and structural properties. The process of forging on ADI makes it possible to obtain final parts with good dimensions. Moreover, Austempered Ductile Iron has a remarkable workability. ADI has many advantages, including the possibility of modifying and of improving the mechanical characteristics by thermo mechanical treatments while preserving a relatively low production cost, thus competing with many categories of steels. The study presented relates to the influence of the parameters of the thermo mechanical treatments on the proportion of residual austenite allowing modification of the mechanical characteristics of the material and on the evaluation of the residual stresses.

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37

Mirzavand, Rashid, Abdolali Abdipour, Gholamreza Moradi, and Masoud Movahhedi. "FULL-WAVE SEMICONDUCTOR DEVICES SIMULATION USING ADI-FDTD METHOD." Progress In Electromagnetics Research M 11 (2010): 191–202. http://dx.doi.org/10.2528/pierm10010604.

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Hepp, E., and C. Thomser. "Virtual Optimization of Process and Material Properties for ADI." HTM Journal of Heat Treatment and Materials 72, no. 5 (October 12, 2017): 278–84. http://dx.doi.org/10.3139/105.110335.

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Afolabi, A. S. "Effect of austempering temperature and time on corrosion behaviour of ductile iron in chloride and acidic media." Anti-Corrosion Methods and Materials 58, no. 4 (June 28, 2011): 190–95. http://dx.doi.org/10.1108/00035591111148902.

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PurposeThe aim of this paper is to study the effect of heat treatment temperature and time on the corrosion behavior of ductile iron in 0.5 M NaCl and 0.5 M H2SO4.Design/methodology/approachDuctile iron samples of known composition were austenized at temperatures 800°C and 850°C, and austempered at 300°C and 350°C for periods of 30, 45 and 60 min to convert them to austempered ductile iron (ADI). The corrosion behavior of these ADI samples in 0.5 M NaCl and H2SO4 was measured using the conventional weight loss method. The metallographic examination of the samples was carried out to study the morphology of their corroded surfaces.FindingsDuctile iron is susceptible to corrosion in both acidic and chloride media, while attack by acid media is mainly at the grain boundaries, that from the chloride is pitting. The corrosion behavior of the material is affected by the compositional structures of the materials as well as the austempering temperature and time it was subjected to.Practical implicationsDuctile iron has the potential to replace costlier materials in many engineering and structural applications.Originality/valueThe results revealed that the corrosion of ADI in both acidic and chloride media were strongly dependent on the structure of the material, which in turn was affected by the austempering temperature and time.

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Kovacs, B. V. "Development of austempered ductile iron (ADI) for automobile crankshafts." Journal of Heat Treating 5, no. 1 (March 1987): 55–60. http://dx.doi.org/10.1007/bf02831620.

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Giangiacomo, P., and V. Michelassi. "An Efficient Parallel ADI Algorithm for Turbomachinery Flows." International Journal of Computational Fluid Dynamics 17, no. 1 (January 2003): 15–26. http://dx.doi.org/10.1080/1061856031000083440.

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Hung, F. Y., L. H. Chen, and T. S. Lui. "A study on erosion of upper bainitic ADI and PDI." Wear 260, no. 9-10 (May 2006): 1003–12. http://dx.doi.org/10.1016/j.wear.2005.06.003.

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Martins, R., J. Seabra, and L. Magalhães. "Austempered ductile iron (ADI) gears: Power loss, pitting and micropitting." Wear 264, no. 9-10 (April 2008): 838–49. http://dx.doi.org/10.1016/j.wear.2007.05.007.

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Dommarco, R. C., P. C. Bastias, H. A. Dall'O, G. T. Hahn, and C. A. Rubin. "Rolling Contact Fatigue (RCF) resistance of Austempered Ductile Iron (ADI)." Wear 221, no. 1 (October 1998): 69–74. http://dx.doi.org/10.1016/s0043-1648(98)00259-2.

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Polishetty, Ashwin, Guy Littlefair, Moshe Goldberg, and Junior Nomani. "Current Trends in Machinability Research." International Journal of Materials Forming and Machining Processes 3, no. 1 (January 2016): 1–11. http://dx.doi.org/10.4018/ijmfmp.2016010101.

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The manufacturing index of a country relies on the quality of manufacturing research outputs. The emergence of new materials such as composites and multi component alloy has replaced traditional materials in certain design application. Materials with properties like high strength to weight ratio, fatigue strength, wear resistance, thermal stability and damping capacity are a popular choice for a design engineer. Contrary, the manufacturing engineer is novice to the science of machining these materials. This paper is an attempt to focus on the current trends in machinability research and an addition to the existing information on machining. The paper consist of information on machining Austempered Ductile Iron (ADI), Duplex Stainless Steel and Nano-Structured Bainitic Steel. The various techniques used to judge the machinability of these materials is described in this paper. Studying the chip formation process in duplex steel using a quick stop device, metallographic analysis using heat tinting of ADI and cutting force analysis of Nano-structured bainitic steel is discussed.

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Cahyono, Guntur. "Pemanfaatan Media Youtube Dakwah Ustadz Adi Hidayat dalam Pengembangan Materi Fikih Madrasah Ibtidaiyah." At-Tarbawi: Jurnal Kajian Kependidikan Islam 4, no. 1 (June 30, 2019): 78. http://dx.doi.org/10.22515/attarbawi.v4i1.1474.

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Social media are beneficial not only to communicate interpersonally but also to preach and educate people. One of these media is Youtube that can be applied in developing learning materials by capitalizing online preaching of Islam teachers (ustadz) uploaded in this medium. This research gives description on how Youtube is useful as part of learning material development. In this research, the description reveals the facts that teachers employ not only text books or student work books (LKS) in material development but also online videos. Youtube videos of ustadzAdiHidayat can be used to develop Islamic principal (Fiqh) learning materials in Islamic elementary schools by downloading those videos. Teachers are required to be savvy in operating internet media in learning material development for teaching and learning process.

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Chen, Juan, and Jianguo Wang. "PEC condition implementation for the ADI-FDTD method." Microwave and Optical Technology Letters 49, no. 3 (January 26, 2007): 526–30. http://dx.doi.org/10.1002/mop.22185.

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Wang, Zhu, Ji Chen, and Yinchao Chen. "Development of a higher-order ADI-FDTD method." Microwave and Optical Technology Letters 37, no. 1 (February 24, 2003): 8–12. http://dx.doi.org/10.1002/mop.10808.

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Choi, Ik-Joon, Suk-In Yoon, Jin-Woo Kim, and Taeyoung Won. "ADI-FDTD for the modeling and simulation of VLSI interconnects." Current Applied Physics 5, no. 4 (May 2005): 356–64. http://dx.doi.org/10.1016/j.cap.2004.02.014.

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Hsu, Cheng-Hsun, Jung-Kai Lu, and Rung-Jie Tsai. "Effects of low-temperature coating process on mechanical behaviors of ADI." Materials Science and Engineering: A 398, no. 1-2 (May 2005): 282–90. http://dx.doi.org/10.1016/j.msea.2005.03.092.

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