Готові списки джерел за темами / Manganese TWIP Steels

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Автор: Grafiati

Опубліковано: 6 вересня 2023

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Статті в журналах з теми "Manganese TWIP Steels"

Razavi, Gholam Reza. "The Study of Type Twin Annealing in High Mn Steel." Applied Mechanics and Materials 148-149 (December 2011): 1085–88. http://dx.doi.org/10.4028/www.scientific.net/amm.148-149.1085.

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TWIP steels are high manganese steel (Mn: 17% - 35%) which are used for shaping car bodies. The structure of this kind of steels remains austenite even in room temperature. Due to low SFE (Stacking Fault Energy) twinning of grains is governing reformation mechanism in this kind of steels which strengthen TWIP steel. Regarding heat treatment influences on mechanical properties of TWIP steels, in this paper we discuss twinning phenomenon resulting from this kind of treatment. For this, following casting and hot rolling processes, we anneal the steel at 1100°C and different time cycles and study its microstructure using light microscope. The results showed that with decreasing grain size the number of twin annealing added And four types of annealing twin in the microstructure, in the end they all become one twin and then turn into grain.

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Borek, Wojciech, Małgorzata Czaja, Krzysztof Labisz, Tomasz Tański, Mariusz Krupiński, and Stanislav Rusz. "High Manganese Austenitic X6MnSiAlNbTi26-3-3 Steel - Characteristic, Structures and Properties." Advanced Materials Research 1036 (October 2014): 18–23. http://dx.doi.org/10.4028/www.scientific.net/amr.1036.18.

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The aim of this paper is to determine the high-manganese austenite propensity to twinning induced by the cold working and its effect on structure and mechanical properties, and especially the strain energy per unit volume of new-developed high-manganese Fe – Mn – (Al, Si) investigated steel with various structures after their thermo-mechanical treatments. The new-developed high-manganese steel provides an extensive potential for automotive industries through exhibiting the twinning induced plasticity (TWIP) and transformation induced plasticity (TRIP) mechanisms. TWIP steels not only show excellent strength, but also have excellent formability due to twinning, thereby leading to excellent combination of strength, ductility, and formability over conventional dual phase steels or transformation induced plasticity TRIP steels. The microstructure evolution in successive stages of deformation was determined in metallographic investigations using light, scanning and transmission electron microscopies as well as X-ray diffraction methods.

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Hernández-Belmontes, Humberto, Ignacio Mejía, and Cuauhtémoc Maldonado. "Ab Initio Study of Weldability of a High-Manganese Austenitic Twinning-Induced Plasticity (TWIP) Steel Microalloyed with Boron." MRS Proceedings 1812 (2016): 35–40. http://dx.doi.org/10.1557/opl.2016.15.

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ABSTRACTHigh-Mn Twinning-Induced Plasticity (TWIP) steels are advanced high-strength steels (AHSS) currently under development; they are fully austenitic and characterized by twinning as the predominant strengthening mechanism. TWIP steels have high strength and formability with an elongation up to 80%, which allows reduction in automotive components weight and fuel consumption. Since the targeted application field of TWIP steels is the automotive industry, steels need high mechanical performance with good weldability and excellent corrosion resistance. However, there is lack of information about the weldability behavior of these advanced steels. This research work aims to study the weldability of a new generation of high-Mn austenitic TWIP steels microalloyed with B. Weldability was examined using spot welds produced by Gas Tungsten Arc Welding. Microstructural changes were examined using light optical metallography. Segregation of elements in the weld joint was evaluated using point and elemental mapping chemical analysis by Scanning Electron Microscopy and Electron-Dispersive Spectroscopy; while the hardness properties were examined with Vickers microhardness testing (HV25). Experimental results show that the welded joint microstructure consists of austenitic dendritic grains in the fusion zone, and equiaxed grains in the heat affected zone. Notably, the boron microalloyed TWIP steel exhibited poor weldability, showing hot cracking. Additionally, the studied TWIP steels showed a high degree of segregation in the fusion zone; Mn and Si segregated into the interdendritic regions, while Al and C preferentially segregated in dendritic areas. Finally, the welded joints of the TWIP steels showed microhardness values lower than the base material. In general, the present TWIP steels have problems of weldability, which are corroborated with microstructural changes, elements segregation and microhardness loss.

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Iker, Mathieu, D. Gaude-Fugarolas, Pascal J. Jacques, and Francis Delannay. "Improvement of the Mechanical Properties of High Manganese Steels by Combination of Precipitation Hardening and Mechanical Twinning." Advanced Materials Research 15-17 (February 2006): 852–57. http://dx.doi.org/10.4028/www.scientific.net/amr.15-17.852.

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Twinning-Induced Plasticity steels (TWIP steels) are extensively studied due to their ultra-high strain-hardening rate, that brings about a remarkable combination of ductility and strength. Twinning can be observed in high manganese-carbon steels. This paper considers hardening by combination of mechanical twinning with carbide precipitation. The kinetics of precipitation and the morphological evolution of carbides with annealing time were studied for two different TWIP steels with high manganese and carbon contents. The steels are first cold-rolled and then annealed at 800°C for recrystallization and carbide precipitation. Depending on the steel composition, the kinetics of precipitation and the morphology of the carbides are quite different. The influence of the annealing cycle on the mechanical properties has also been assessed. The results are used to discuss the influence of composition, stacking fault energy (SFE) and carbide precipitation on twinning. We show that the usual criteria based on the SFE only are not sufficient to characterize the twinning ability of a steel.

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Jabłońska, Magdalena, Dariusz Kuc, Karina Horzelska, and Anna Śmiglewicz. "Microstructure and Mechanical Properties of High Manganese TWIP Steel after Thermo-Forming Processes." Solid State Phenomena 226 (January 2015): 99–102. http://dx.doi.org/10.4028/www.scientific.net/ssp.226.99.

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In recent years, the leading scientific centres focus their research on improvement of mechanical properties of steels used for car manufacturing. These steels belong to a so-called 2nd generation of steels showing above-the-average plasticity while maintaining high strength. Thanks to these properties, they may be used successfully in automotive, armaments or railway industries for elements absorbing energy of a collision and ensuring high rigidity of a structure owing to their resistance to breaking. These steels are called TWIP (Twinning Induced Plasticity) steels based on their hardening mechanism. In this paper, results of studies on the influence of parameters of thermo-plastic deformation on selected properties and structure of an X45MnAl20-3V austenitic steel showing the TWIP effect are presented. Moreover, an analysis of influence of the deformation on the structure of the studied steel in tensile tests has been carried out. The studied steel was manufactured by classic casting to a concast mould, obtaining ingots with dimensions of 100×100 mm, then subjected to rolling in 4 roll passes to a final thickness of 12 mm and 3 mm. The finish-rolling temperature was 950°C and the sheets were cooled in 2 media, i.e. in air and in water. It was confirmed that the studied steel belongs to the TWIP group of steels, with mechanical twinning being the prevailing process of hardening during deformation.

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Mercado, V. H., I. Mejía, Y. Salinas-Escutia, and A. Bedolla-Jacuinde. "Wear Resistance under Non-Lubricated Condition of Nb-Containing TWIP Steel." MRS Advances 2, no. 61 (2017): 3765–71. http://dx.doi.org/10.1557/adv.2017.593.

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ABSTRACTTwinning induced plasticity (TWIP) steels are one of the most attractive advanced high-strength steels for structural applications due to their unique combination of strength and ductility, which is associated with so-called “mechanical twinning”, where twins act as strong obstacles to the dislocation motion. In this context, Nb addition to TWIP steel increases the strength and refines grain size by nanoscale NbC precipitates. Nowadays, high-manganese TWIP steels are extensively studied. However, information in the specialized literature about their tribological properties is limited. This research work studies the wear behavior of high-manganese austenitic Fe–20Mn–1.5Si–1.5Al–0.4C TWIP steel microalloyed with Nb. The wear behavior was evaluated under non-lubricated sliding condition using the “pin-on-ring” technique. As-solution heat treated samples were worn under loads of 53, 104 and 154 N, and at sliding speeds of 0.22, 0.60 and 0.87 m/s. The wear resistance was evaluated in terms of the loss weight. Wear debris and worn surfaces were characterized by scanning electron microscopy (SEM), energy dispersive spectroscopy (SEM-EDS) and X-ray diffraction (XRD). In general, results show that the wear resistance significantly improves as the sliding speed increases. On the other hand, Nb addition to present TWIP steel produces a slight increase of the wear resistance. Also, it was found that the oxide layer plays a significant role in the wear resistance behavior of this kind of steel.

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Dobrzański, Leszek Adam, Wojciech Borek, and Janusz Mazurkiewicz. "Mechanical Properties of High-Manganese Austenitic TWIP-Type Steel." Materials Science Forum 783-786 (May 2014): 27–32. http://dx.doi.org/10.4028/www.scientific.net/msf.783-786.27.

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Taking into consideration increased quantity of accessories used in modern cars, decreasing car’s weight can be achieved solely by optimization of sections of sheets used for bearing and reinforcing elements as well as for body panelling parts of a car. Application of sheets with lower thickness requires using sheets with higher mechanical properties, however keeping adequate formability. The goal of structural elements such as frontal frame side members, bumpers and the others is to take over the energy of an impact. Therefore, steels that are used for these parts should be characterized by high value of UTS and UEl, proving the ability of energy absorption. Among the wide variety of recently developed steels, high-manganese austenitic steels with low stacking faulty energy are particularly promising, especially when mechanical twinning occurs. Beneficial combination of high strength and ductile properties of these steels depends on structural processes taking place during cold plastic deformation, which are a derivative of SFE of austenite, dependent, in turn on the chemical composition of steel and deformation temperature. High-manganese austenitic steels in effect of application of proper heat treatment or thermo-mechanical treatment can be characterized by different structure assuring the advantageous connection of strength and plasticity properties. Proper determinant of these properties can be plastic deformation energy supply determined by integral over surface of cold plastic deformation curve. Obtaining of high strength properties with retaining the high plasticity has significant influence for the development of high-manganese steel groups and their significance for the development of materials engineering.

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Olugbade, Temitope Olumide. "Stress corrosion cracking and precipitation strengthening mechanism in TWIP steels: progress and prospects." Corrosion Reviews 38, no. 6 (November 18, 2020): 473–88. http://dx.doi.org/10.1515/corrrev-2020-0052.

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AbstractTwinning-induced plasticity (TWIP) steels are increasingly receiving wide attention for automotive applications due to their outstanding combination of ductility and strength, which can largely be attributed to the strain hardening effect, formation of mechanical twins during straining, and the presence of manganese (Mn) as an alloying element. However, the premature cracking and sudden failure frequently experienced by the TWIP steels under the combined action of tensile stress and corrosion environment remain a challenge for many material scientists and experts up till now. Driven by this challenge, an overview of the stress corrosion cracking (SCC) susceptibility of high-Mn TWIP steels (under the action of both mechanical loading and corrosion reaction) is presented. The SCC susceptibility of the high-Mn TWIP steels is specifically sensitive to hydrogen embrittlement, which is a major factor influencing the SCC behavior, and is a function of the hydrogen content, lattice-defect density and strength level. Besides, the corrosion susceptibility to hydrogen embrittlement may be reduced by suppressing the martensite in the TWIP steels by carbon additions. This review further discusses in detail the precipitation strengthening mechanisms as well as the corrosion behavior of TWIP steel by mechanism.

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Erhart, Andrea, André Haufe, Alexander Butz, Maksim Zapara, and Dirk Helm. "Implementation of a Constitutive Model for the Mechanical Behavior of TWIP Steels and Validation Simulations." Key Engineering Materials 651-653 (July 2015): 539–44. http://dx.doi.org/10.4028/www.scientific.net/kem.651-653.539.

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High manganese content TWinning Induced Plasticity (TWIP) steels are promising for the production of lightweight components due to their high strength combined with extreme ductility, see [1]. This paper deals with the implementation of a constitutive model for the macroscopic deformation behavior of TWIP steels under mechanical loading with the aim of simulating metal forming processes and representing the behavior of TWIP-steel components – for example under crash loading - with the Finite Element code LS-DYNA®and refers to our recently published papers: [2],[4],[5]. Within the present paper we focus on the implementation of the model formulated in [2] and its extension to stress dependent twinning effects.

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Ma, Peng Hui, Li He Qian, Jiang Ying Meng, Shuai Liu, and Fu Cheng Zhang. "Fatigue Crack Growth Behavior of High Manganese Austenitic TWIP Steels." Materials Science Forum 833 (November 2015): 7–10. http://dx.doi.org/10.4028/www.scientific.net/msf.833.7.

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Fatigue crack growth (FCG) behavior of three high manganese austenitic twin-induced plasticity (TWIP) steels with different stacking fault energy (SFE) was investigated, aiming at studying the correlation between the FCG resistance and the SFE of the steels. FCG tests were performed using three-point bending specimens at room temperature at stress ratio of 0.1 under the control of stress intensity factor range. Test results showed that the fatigue threshold values of these steels decrease with increasing the SFE. However, in the Paris regime, the crack growth rates of the steels do not appear to correlate directly with SFE. These results are discussed according to the degree of fatigue crack closure and the deformation mode of crack tip zone.

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Більше джерел

Дисертації з теми "Manganese TWIP Steels"

Saeed-Akbari, Alireza [Verfasser]. "Mechanism Maps, Mechanical Properties, and Flow Behavior in High-Manganese TRIP/TWIP and TWIP Steels / Alireza Saeed-Akbari." Aachen : Shaker, 2011. http://d-nb.info/107408795X/34.

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Mosecker, Linda Verfasser], Wolfgang [Akademischer Betreuer] [Bleck, and Joachim [Akademischer Betreuer] Mayer. "Materials design of high nitrogen manganese austenitic stainless TWIP steels for strip casting / Linda Mosecker ; Wolfgang Bleck, Joachim Mayer." Aachen : Universitätsbibliothek der RWTH Aachen, 2016. http://d-nb.info/1126040770/34.

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Mosecker, Linda [Verfasser], Wolfgang [Akademischer Betreuer] Bleck, and Joachim [Akademischer Betreuer] Mayer. "Materials design of high nitrogen manganese austenitic stainless TWIP steels for strip casting / Linda Mosecker ; Wolfgang Bleck, Joachim Mayer." Aachen : Universitätsbibliothek der RWTH Aachen, 2016. http://d-nb.info/1126040770/34.

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Haase, Christian [Verfasser], Dmitri A. [Akademischer Betreuer] Molodov, and Wolfgang [Akademischer Betreuer] Bleck. "Texture and microstructure evolution during deformation and annealing of high-manganese TWIP steels / Christian Haase ; Dmitri A. Molodov, Wolfgang Bleck." Aachen : Universitätsbibliothek der RWTH Aachen, 2016. http://d-nb.info/1130590003/34.

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Mendonça, Roberto Ramon. "Soldagem por fricção e mistura mecânica de aço austenítico alto manganês com efeito TRIP." Universidade de São Paulo, 2014. http://www.teses.usp.br/teses/disponiveis/18/18158/tde-14102014-082116/.

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O desenvolvimento e utilização de novos materiais, mais leves e com propriedades mecânicas superiores aos atuais, se mostram extremamente importantes devido à redução de peso e consequentemente redução na emissão de gases poluentes que poderiam gerar. As ligas de Fe-Mn-C com elevados teores de Mn (20-30%) representam um desenvolvimento muito recente de aços austeníticos, que, através dos seus mecanismos diferenciados de deformação reúnem elevada resistência mecânica com grande ductilidade. Essa nova classe de materiais estruturais possibilita uma efetiva redução de custos na produção através do reduzido tempo de processamento (sem a necessidade de tratamentos térmicos especiais e de processamentos termomecânicos controlados). A soldagem é, atualmente, o mais importante processo de união de metais usado no setor industrial. Dentro da variada gama de processos de soldagem existentes, a soldagem por fricção e mistura mecânica (SFMM, em inglês: Friction Stir Welding - FSW) se destaca por ser um processo de união no estado sólido que apresenta uma série de vantagens sobre as tecnologias convencionais de soldagem por fusão. Do ponto de vista metalúrgico, uma das suas principais vantagens se manifesta justamente na junção de materiais dissimilares, visto que o grau de mistura de composições e as transformações de fases entre materiais incompatíveis podem ser minimizados. Outra vantagem é que há um refino de grão no cordão de solda comparado com a microestrutura fundida que se forma nos processos convencionais. Este trabalho teve como objetivo produzir em escala laboratorial os aços de alta liga ao manganês com efeito TRIP, avaliar o impacto da velocidade de rotação da ferramenta na soldagem por fricção e mistura mecânica e avaliar a microestrutura e propriedades mecânicas das juntas soldadas. A microestrutura das juntas soldadas caracterizou-se pela presença apenas da zona de mistura e do metal base, além da formação de \'anéis de cebola\' na zona de mistura, esta não mostrou sinais de transformação martensítica induzida por deformação e sofreu recristalização dinâmica para todas as velocidades de rotação investigadas com a formação de grãos refinados e com morfologia equiaxial. Os corpos de tração fraturaram todos nos metais de base, mostrando que as propriedades mecânicas da zona de mistura foram superiores à do metal base e que a variação de aporte térmico alcançada com a velocidade de rotação da ferramenta não comprometeu a qualidade das juntas soldadas.
The development and application of new light materials with superior mechanical properties is extremely important to weight reduction in vehicles and consequently reduction of greenhouse gases emission. The Fe-Mn-C steels with high Mn (20-30%) are a recent development of austenitic steels, which, due to their different mechanisms of deformation, possesses high strength and high ductility as well. In addition, this new type of structural steel allows an effective reduction of manufacturing costs due to its reduced processing time (it does not require special heat treatments and controlled thermo mechanical processing). Welding has been one of the most important processes for joining metals. Among the available welding processes, friction stir welding (FSW) is notable for being a solid state process with great advantages over the conventional welding methods. In the mettalurgical point of view, welding dissimilar materials is a significant advantage of FSW over the other process. The main reason is the reduction of mixture of material and phase transformations between the incompatible materials in the weld. Moreover, grain refinement is another advantage from the process. The present study aimed to produce laboratorial scale high Mn steels with TRIP effect, investigate the impact of tool speed ont the microstructure and mechanical properties of friction stir welded joints. The microstructure of the welded joints exhibited only the stirred zone (SZ) and the base material (BM), besides the presence of ´onion rings´ within the stirred zone. The SZ exhibited no signs of martensite suggesting that dynamic recrystallization have occurred for all the speed tested. Moreover, the grains in the SZ had equiaxial morphology and were significantly refined. The fracture of the tensile specimens occurred in the base material, bringing to light that the welding process was beneficial to the mechanical properties. Furthermore, the variation of heat input achieved with the speed did not compromise the quality of welded joints.

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Jäpel, Tom Verfasser], Stefan [Akademischer Betreuer] Zaefferer, Dierk [Akademischer Betreuer] [Raabe, and Joachim [Akademischer Betreuer] Mayer. "Feasibility study on local elastic strain measurements with an ebsd pattern cross correlation method in elastic-plastically deforming materials : applications on high manganese TWIP steels / Tom Jäpel ; Stefan Zaefferer, Dierk Raabe, Joachim Mayer." Aachen : Universitätsbibliothek der RWTH Aachen, 2015. http://d-nb.info/1129180786/34.

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Jäpel, Tom [Verfasser], Stefan Akademischer Betreuer] Zaefferer, Dierk [Akademischer Betreuer] [Raabe, and Joachim [Akademischer Betreuer] Mayer. "Feasibility study on local elastic strain measurements with an ebsd pattern cross correlation method in elastic-plastically deforming materials : applications on high manganese TWIP steels / Tom Jäpel ; Stefan Zaefferer, Dierk Raabe, Joachim Mayer." Aachen : Universitätsbibliothek der RWTH Aachen, 2015. http://d-nb.info/1129180786/34.

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Beal, Coline. "Mechanical behaviour of a new automotive high manganese TWIP steel in the presence of liquid zinc." Phd thesis, INSA de Lyon, 2011. http://tel.archives-ouvertes.fr/tel-00679521.

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High manganese TWIP (TWinning Induced Plasticity) steels are particularly attractive for automotive applications because of their exceptional properties of strength combined with an excellent ductility. However, as austenitic steels, they appear to be sensitive to liquid zinc embrittlement during welding, the liquid zinc arising from the melted coating due to the high temperatures reached during the welding process. In this framework, the cracking behaviour of a high manganese austenitic steel has been investigated in relation to the liquid metal embrittlement (LME) phenomenon by hot tensile tests carried out on electro-galvanized specimens using a Gleeble 3500 thermomechanical simulator. The influence of different parameters such as temperature and strain rate on cracking behaviour has been studied. Embrittlement appears within a limited range of temperature depending on experimental conditions. Conditions for which cracking occurs could be experienced during welding processes. The existence of a critical stress above which cracking appears has been evidenced and this critical stress can be used as a cracking criterion. Finally, the study of the influence of different parameters such as time of contact between steel and liquid zinc before stress application, coating and steel on LME occurrence provides understanding elements of LME mechanism and permits to suggest solutions for preventing cracking during spot welding of such steels.

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Béal, Coline. "Mechanical behaviour of a new automotive high manganese TWIP steel in the presence of liquid zinc." Thesis, Lyon, INSA, 2011. http://www.theses.fr/2011ISAL0029/document.

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Les aciers TWIP (TWinning Induced Plasticity) à haute teneur en manganèse sont particulièrement prometteurs pour les applications automobiles de par leur excellent compromis entre résistance mécanique et ductilité. Cependant, la microstructure austénitique leur confère une sensibilité à la fragilisation par le zinc liquide durant les procédés de soudage ; le zinc liquide provenant de la fusion du revêtement résultant de l’élévation de température à la surface de l’acier. Dans cette étude, la fissuration d’un acier austénitique à haute teneur en manganèse a été étudiée en rapport avec le phénomène de fragilisation par les métaux liquides par des essais de traction à chaud réalisés sur des éprouvettes électrozinguées au moyen d’un simulateur thermomécanique Gleeble 3500. L’influence de nombreux paramètres tels que la température et la vitesse de déformation sur la fissuration a été étudiée. La fragilisation apparaît dans un domaine de température limité qui dépend des conditions expérimentales. Les conditions pour lesquelles la fissuration apparaît peuvent être rencontrées durant les procédés de soudage. L’existence d’une contrainte critique pour laquelle la fissuration apparait a été mise en évidence et celle-ci peut être utilisée comme critère de fissuration. Enfin, l’étude de l’influence de différents paramètres tels que le temps de contact entre l’acier et le zinc liquide avant l’application des contraintes, le revêtement et l’acier sur l’apparition de la fragilisation apporte des éléments de compréhension du mécanisme de fissuration et permet de proposer des solutions pour éviter la fissuration durant le soudage par point de l’acier étudié
High manganese TWIP (TWinning Induced Plasticity) steels are particularly attractive for automotive applications because of their exceptional properties of strength combined with an excellent ductility. However, as austenitic steels, they appear to be sensitive to liquid zinc embrittlement during welding, the liquid zinc arising from the melted coating due to the high temperatures reached during the welding process. In this framework, the cracking behaviour of a high manganese austenitic steel has been investigated in relation to the liquid metal embrittlement (LME) phenomenon by hot tensile tests carried out on electro-galvanized specimens using a Gleeble 3500 thermomechanical simulator. The influence of different parameters such as temperature and strain rate on cracking behaviour has been studied. Embrittlement appears within a limited range of temperature depending on experimental conditions. Conditions for which cracking occurs could be experienced during welding processes. The existence of a critical stress above which cracking appears has been evidenced and this critical stress can be used as a cracking criterion. Finally, the study of the influence of different parameters such as time of contact between steel and liquid zinc before stress application, coating and steel on LME occurrence provides understanding elements of LME mechanism and permits to suggest solutions for preventing cracking during spot welding of such steels

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Частини книг з теми "Manganese TWIP Steels"

De Cooman, B. C., L. Chen, Han Soo Kim, Y. Estrin, S. K. Kim, and H. Voswinckel. "State-of-the-Science of High Manganese TWIP Steels for Automotive Applications." In Microstructure and Texture in Steels, 165–83. London: Springer London, 2009. http://dx.doi.org/10.1007/978-1-84882-454-6_10.

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Keil, D., M. Zinke, and H. Pries. "Investigations on Hot Cracking of Novel High Manganese TWIP-Steels." In Hot Cracking Phenomena in Welds III, 209–23. Berlin, Heidelberg: Springer Berlin Heidelberg, 2011. http://dx.doi.org/10.1007/978-3-642-16864-2_12.

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Dobrzański, Leszek A., Janusz Mazurkiewicz, Wojciech Borek, and Małgorzata Czaja. "Newly-Developed High-Manganese Fe–Mn–(Al, Si) Austenitic TWIP and TRIP Steels." In Rolling of Advanced High Strength Steels, 224–88. Boca Raton, FL : CRC Press, [2017]: CRC Press, 2017. http://dx.doi.org/10.1201/9781315120577-6.

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Wesselmecking, Sebastian, Marc Ackermann, Charline Blankart, Jing Wang, Frederike Brasche, Tobias Plum, Siyuan Qin, et al. "Toward Holistic Digital Material Description During Press-Hardening." In Internet of Production, 1–16. Cham: Springer International Publishing, 2023. http://dx.doi.org/10.1007/978-3-030-98062-7_22-1.

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AbstractPress hardening of manganese-boron steels is one of the most widely used production processes for high-strength automotive components. The low residual formability of these parts is a decisive disadvantage. The low formability originates from a strong, but brittle martensitic microstructure transformed during quenching in the press-hardening tool. In contrast, medium manganese steels (MMnS) contain high fractions of ductile retained austenite improving press-hardened parts toward promising candidates for crash-relevant car body components. Disadvantages include a more complex alloy design, a highly sensitive production process, and more demanding requirements on the tool due to higher strength during press-hardening.A detailed description of the entire production process along the process chain including the material and the press-hardening tool is important for tailoring the properties. Combined information is required to enable a precise control of the production process and its influences on the final properties of the part. Maximum economic use of the material is achieved by digitally describing MMnS as well as the tool along the entire process chain (casting, forging, hot rolling, cold rolling, galvanizing and press hardening including Q&P). To link the process steps and to describe the changes of the material, a new material database structure (idCarl) was developed. All production parameters are recorded and processed as a digital material twin. Ultimately, deviations occurring during production process can be deduced from in-line data analysis and counteracted. These can then be counteracted by adapted process control and the product can be brought back into the required parameter field of properties. Clear identification of the component and the used material allows conclusions about steps responsible for errors in the production process that become apparent during use.

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Niendorf, Thomas, Felix Rubitschek, Hans J. Maier, and Andreas Frehn. "On the Fatigue Crack Growth in High-Manganese Austenitic TWIP Steel - Influence of the Microstructure." In Fatigue of Materials, 55–66. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2010. http://dx.doi.org/10.1002/9781118013373.ch5.

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Fabrègue, D., C. Landron, C. Béal, X. Kleber, E. Maire, and M. Bouzekri. "Understanding the mechanical behaviour of a high manganese TWIP steel by the means of in situ 3D X ray tomography." In Optical Measurements, Modeling, and Metrology, Volume 5, 27–32. New York, NY: Springer New York, 2011. http://dx.doi.org/10.1007/978-1-4614-0228-2_4.

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De Cooman, B. C. "Phase transformations in high manganese twinning-induced plasticity (TWIP) steels." In Phase Transformations in Steels, 295–331. Elsevier, 2012. http://dx.doi.org/10.1533/9780857096111.2.295.

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Тези доповідей конференцій з теми "Manganese TWIP Steels"

Curtze, S., V. T. Kuokkala, M. Hokka, and T. Saarinen. "Microstructure and texture evolution in high manganese TWIP steels." In DYMAT 2009 - 9th International Conferences on the Mechanical and Physical Behaviour of Materials under Dynamic Loading. Les Ulis, France: EDP Sciences, 2009. http://dx.doi.org/10.1051/dymat/2009141.

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JABŁOŃSKA, M. B. "Specific behavior of high-manganese steels in the context of temperature increase during dynamic deformation." In Material Forming. Materials Research Forum LLC, 2023. http://dx.doi.org/10.21741/9781644902479-92.

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Abstract. In recent years, a development of AHSS steels for manufacturing parts for the automotive industry is the observed trend. The high-manganese steels with aluminium and silicon addition, exhibiting twinning induced plasticity (TWIP) effect, are one of the most interesting modern materials, due to their unique combination of both very good strength and great ductility. However, the material behaviour during plastic deformation depends not only on the chemical composition but also on deformation conditions, inter alia, strain rate and temperature. TWIP steels can be used for production of energy-absorbing parts, therefore it is very important to analyse their deformation behaviour at high strain rates. The paper presents the effect of deformation in quasi-static and dynamic conditions on the microstructure of an experimental TWIP steel. The experiments were performed on tensile testing machine and on the flywheel machine. The microstructure was analyzed by optical and scanning transmission electron microscopy. Thanks to the measurements during the quasi-static test and numerical simulations of both tensile tests, the temperature increase was determined in the sample region from which the sections for microstructural studies were taken. It was found that the temperature increase in dynamic conditions can affect the microstructure evolution in the investigated TWIP steel.

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da Silva Lima, M. N. "Microstructural and corrosion study of a “non-comercial” high manganese steel." In Superplasticity in Advanced Materials. Materials Research Forum LLC, 2023. http://dx.doi.org/10.21741/9781644902615-37.

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Abstract. High-Mn steels have great plasticity when subjected to deformation due to TWIP or TRIP effects. This work evaluated the microstructural evolution, the formation of the -Martensite phase taking into account the hot rolling of 80-60% and the solution annealing. Afterwards, microstructures were analyzed by SEM. Volume fraction of the Austenite and -Martensite phases were measured by EBSD technique. The steel obtained low energy levels of stacking fault, favoring the effect TRIP. Corrosion resistance in 0.1M NaCl solution was analyzed by open potential circuit and potentiodynamic polarization techniques. The analysis of the curves and the surface of the steel after the polarization tests showed that the steel with less strain had relatively nobler potential than the steel with more strain.

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PODANÝ, Pavel, Michal DUCHEK, and Tomáš STUDECKÝ. "Heat Treatment of Low Carbon High Manganese TWIP Steel." In METAL 2019. TANGER Ltd., 2019. http://dx.doi.org/10.37904/metal.2019.867.

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Jiang, Yinghua, Yun Han, and Chunqian Xie. "Effect of microstructure and mechanical properties on hole expansion property of high manganese TWIP steel." In MATERIALS SCIENCE, ENERGY TECHNOLOGY AND POWER ENGINEERING III (MEP 2019). AIP Publishing, 2019. http://dx.doi.org/10.1063/1.5125380.

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