Relevant bibliographies by topics / Ni-based super-alloys

Academic literature on the topic 'Ni-based super-alloys'

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Published: 10 December 2022
Last updated: 28 January 2023

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Journal articles on the topic "Ni-based super-alloys"

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Phillips, PJ, M. De Graef, and MJ Mills. "STEM Stacking Fault Analysis in Ni-based Super Alloys." Microscopy and Microanalysis 16, S2 (July 2010): 746–47. http://dx.doi.org/10.1017/s1431927610054607.

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Onuki, Jin, Masayasu Nihei, Takao Funamoto, Hiroyuki Doi, and Yutaka Fukui. "Joining of Oxide Dispersion Strengthened Ni Based Super Alloys." MATERIALS TRANSACTIONS 42, no. 2 (2001): 365–71. http://dx.doi.org/10.2320/matertrans.42.365.

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OKI, Sachio, Hiroki TOKUMARU, Naotaka KUROYANAGI, Yasuyuki KANENO, and Takayuki TAKASUGI. "OS1804 Plasma spray coatings of Ni-based super-super alloys and their properties." Proceedings of the Materials and Mechanics Conference 2014 (2014): _OS1804–1_—_OS1804–2_. http://dx.doi.org/10.1299/jsmemm.2014._os1804-1_.

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LIANG, X. H., K. S. ZHOU, M. LIU, R. J. HONG, C. G. DENG, S. LUO, and Z. K. CHEN. "MICROSTRUCTURE AND OXIDATION RESISTANCE OF NiCoCrAlYTa COATING BY LOW PRESSURE PLASMA SPRAYING." Surface Review and Letters 16, no. 03 (June 2009): 375–80. http://dx.doi.org/10.1142/s0218625x09012743.

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The NiCoCrAlYTa coating was prepared on Ni -based single crystal super-alloys by low pressure plasma spraying (LPPS). The phases and microstructures for the coatings were characterized by X-ray diffraction and scanning electron microscopy, and the fracture toughness and micro-hardness for both coatings and substrate were also investigated. The relationship between coating properties and oxidation was analyzed. The result shows that elementary distribution of NiCoCrAlYTa coatings, which consists of γ- Ni , β- NiAl , γ'- Ni 3 Al , and CrCoTa phases, is much homogeneous. The composition changes with depth from the surface to substrate for the coatings. The micro-hardness of coatings is 350.8 HV0.3 and fracture toughness is 2.73 MPa m1/2. The oxidation resistance of coatings excelled than Ni -based single crystal super-alloys.
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S. Kawate, Saurabh, Chethan K N, Laxmikant G Keni, Anand Pai, and Padmaraj N H. "Innovations and recent trends in Shape Memory Alloy: a review." International Journal of Engineering & Technology 7, no. 4 (September 16, 2018): 2172. http://dx.doi.org/10.14419/ijet.v7i4.11445.

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Smart materials are materials, which have a definite response to stimulus provided through a change in pressure, temperature and termed as shape memory alloys (SMA). In this review, the general concept of SMA’s has been discussed along with shape memory effects. Shape memory material properties depend on phase shifting phenomena, which consist of pseudoelasticity and thermoelasticity. The basic SMA such as Ni-Ti (Nickel-Titanium) alloys, Copper (Cu) based SMA, Iron (Fe) based SMA are commonly used in the industry, Ni-Ti alloys are expensive but it has good super elasticity and superior mechanical properties. Cu and Fe based are economical as compared to the Ni-Ti alloys. The various fabrication techniques and common composition of the alloys have been discussed with in detail.
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Yamauchi, Akira, Kenta Ida, Masahito Fukuda, and Takuma Yamaguchi. "Tensile Properties of Sn-Bi Lead-Free Solder Alloys." Solid State Phenomena 273 (April 2018): 72–76. http://dx.doi.org/10.4028/www.scientific.net/ssp.273.72.

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The Influence of alloy composition on tensile properties of Sn-Bi, Sn-Bi-Cu and Sn-Bi-Ni lead-free solder alloys were investigated. It is found that the elongation of Sn-Bi alloys depend on Bi content, and Sn-40wt% Bi alloy has the highest elongation. The addition of Cu and Ni improves the ductility of Sn 35-45wt% Bi alloys. The fine microstructure of Sn-Bi-Cu or Ni alloys have an effect on the ductility of Sn-Bi based alloys. The elongation increases with decreasing strain rate and increasing temperature. Cu and Ni added to Sn-Bi alloy showed the super plasticity behavior at low strain rate and high temperature (more than 333 K). Moreover, strain rate sensitivity ‘m’ increases with temperature.
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Ferasat, Keyvan, Thomas D. Swinburne, Peyman Saidi, Mark R. Daymond, Zhongwen Yao, and Laurent Karim Béland. "Interstitialcy-based reordering kinetics of Ni3Al precipitates in irradiated Ni-based super alloys." Materialia 19 (September 2021): 101180. http://dx.doi.org/10.1016/j.mtla.2021.101180.

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Kun, Krisztián, János Kodácsy, Dániel Vaczkó, and Zsolt Ferenc Kovács. "Machinability of Ni-based Superalloys by Indexable End Mills." Acta Materialia Transylvanica 2, no. 1 (April 1, 2019): 49–54. http://dx.doi.org/10.33924/amt-2019-01-08.

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Abstract The subject of this research is the machining of Ni-based super alloys using indexable end mills. The cutting ability of these materials is known to be difficult, even challenging with modern tools, so our goal is to create an efficient technology recommendation on an experimental basis. To this end, we have developed an experimental design from which results are used to determine the optimal technological parameters. This research took place at John Von Neumann University, Department of Vehicle Technology of GAMF Faculty.
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Nursoy, Mustafa, Mehmet Yaz, and Halis Celik. "Hardfacing behavior of Cr–Ni stainless steel with Co-based super alloys." International Journal of Materials Research 99, no. 11 (November 2008): 1285–91. http://dx.doi.org/10.3139/146.101765.

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Outlaw, R. A., S. Rezaie-Serej, W. P. Allen, and R. M. Latanision. "Desulfurization of Ni-based super alloys by combined heating and glow discharge." Scripta Materialia 34, no. 8 (April 1996): 1315–21. http://dx.doi.org/10.1016/1359-6462(95)00666-4.

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Book chapters on the topic "Ni-based super-alloys"

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A., Raja, Mythreyi O. V., and Jayaganthan R. "Additive Manufacturing of Nickel-Based Super Alloys for Aero Engine Applications." In Advances in Civil and Industrial Engineering, 48–70. IGI Global, 2020. http://dx.doi.org/10.4018/978-1-7998-4054-1.ch003.

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Ni based super alloys are widely used in engine turbines because of their proven performance at high temperatures. Manufacturing these parts by additive manufacturing (AM) methods provides researchers a lot of creative space for complex design to improve efficiency. Powder bed fusion (PBF) and direct energy deposition (DED) are the two most widely-used metal AM methods. Both methods are influenced by the source, parameters, design, and raw material. Selective laser melting is one of the laser-based PBF techniques to create small layer thickness and complex geometry with greater accuracy and properties. The layer-by-layer metal addition generates epitaxial growth and solidification in the built direction. There are different second phases in the Ni-based superalloys. This chapter details the micro-segregation of these particles and its influence on the microstructure, and mechanical properties are dependent on the process influencing parameters, the thermal kinetics during the process, and the post-processing treatments.
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"Research on turning Ni-based super alloys with green cooling and lubricating technology." In Advanced Materials, Mechanical and Structural Engineering, 21–24. CRC Press, 2016. http://dx.doi.org/10.1201/b19934-6.

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Conference papers on the topic "Ni-based super-alloys"

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Teratani, T., K. Tani, and Y. Harada. "Reaction Diffusion Behavior of Thermally Sprayed MCrAlY Coatings On Ni-Based Super Alloys." In ITSC2001, edited by Christopher C. Berndt, Khiam A. Khor, and Erich F. Lugscheider. ASM International, 2001. http://dx.doi.org/10.31399/asm.cp.itsc2001p0195.

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Abstract The gas turbine blades in a severe environment are overlaid with MCrAlY coatings by Low Pressure Plasma Spray (LPS) process for protection against hot corrosion. However, the service life of each blade is limited by damage due to embrittlement layer, which is formed by reaction diffusion at the interface between the coating and the substrate. Reaction diffusion behavior between the CoNiCrAlY coatings and substrates was investigated. In addition, high-temperature oxidation behavior of the CoNiCrAlY coating by LPS was evaluated. The CoNiCrAlY coatings for reaction diffusion test were carried out by 3 kinds of spray process (LPS, High Velocity Oxygen Fuel Spray: HVOF, Atmospheric Plasma Spray: APS) on 2 kinds of substrate (Directional Solidification and Single Crystal Ni-based super alloys). It has been found that the CoNiCrAlY coating by APS inhibited the reaction diffusion at the boundary of the coating and the base material as compared with LPS coating. It was also confirmed that the protective dense layer of aluminum oxide against hot corrosion was formed in the surface of the CoNiCrAlY coatings by LPS.
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Liu, Fengdeng, Fei Xing, Yuelong Wu, and Zheng You. "Process of super-black shading material applied to the star sensor based on Ni-P alloys." In International Symposium on Optoelectronic Technology and Application 2014, edited by Guofan Jin, Songlin Zhuang, and Jennifer Liu. SPIE, 2014. http://dx.doi.org/10.1117/12.2071802.

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Penso, Graciela C., and Boian T. Alexandrov. "Welding of Internally Clad X65 Pipes With Precipitation Strengthened Ni-Based Filler Metals." In ASME 2017 Pressure Vessels and Piping Conference. American Society of Mechanical Engineers, 2017. http://dx.doi.org/10.1115/pvp2017-66038.

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X65 steel pipes internally clad with Alloy 625 used in subsea oil extraction are normally welded together with Alloy 625 filler metal. For pipe reeling applications, DNV-OS-F101 requires pipe girth welds to overmatch base metal yield strength with 100 MPa. Since Alloy 625 filler metal does not meet this requirement, Ni-base super alloys 718 and 282 were considered as potential welding consumables for reeling applications. The solidification behavior in weld metal of these alloys diluted with Alloy 625 pipe ID cladding was evaluated using thermodynamic simulations. The response to precipitation hardening by multiple reheat cycles was studied by producing multilayer buildups with cold metal transfer (CMT) and pulsed gas metal arc welding (GMAWp) processes. Weld buildup of Alloy 718 exhibited insufficient hardening response and yield strength, while Alloy 282 met the DNV overmatch requirement. Successful narrow groove welding of X65 pipes with Alloy 282 was performed using CMT process. Welding parameter optimization allowed resolving centerline solidification cracking and lack of fusion defects. The weld metal yield strength was lower than in the multipass buildup, which was attributed to lower number of reheats in groove welding. Meeting the overmatch requirement for yield strength in Alloy 282 groove welds requires further parameter optimization.
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Torfeh, Maryam, Jamshid Aghazadeh, and Soheil Nakhodchi. "Evolution of Temperature, Microstructure and Inter-Granular Stresses During Directionally Solidification Process of a Ni-Based Superalloy." In ASME 2018 Pressure Vessels and Piping Conference. American Society of Mechanical Engineers, 2018. http://dx.doi.org/10.1115/pvp2018-85046.

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In order to gain a better understanding of the detrimental effects of grain boundaries on the creep and fatigue life of a nickel based directionally solidified super alloys, the effect of the grain mis-orientation and temperature changes on the internal stresses were investigated. The changes of cooling rate, nuclei count and stress level and components in different parts of the casting were considered during solidification process in a Bridgeman furnace. During solidification, constriction of grain growth in one direction, which is due to the heat transfer direction, eliminates grains with large mis-orientations. The remaining grains are close to [001] direction. Temperature profile of the modeled carrot samples demonstrated a significant variation in the cooling rate along the axis of the sample. The mis-orientation of the grains was also characterized. Stress components and effective stress were calculated and it was shown that the effective stress is lower than the yield stress of the alloy.
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Selverian, J. H., Dave A. ONeil, and Shinhoo Kang. "Performance Testing and Strength Prediction of Ceramic-to-Metal Joints." In ASME 1993 International Gas Turbine and Aeroengine Congress and Exposition. American Society of Mechanical Engineers, 1993. http://dx.doi.org/10.1115/93-gt-412.

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Brazed joints were made between silicon nitride and Ni-based and Fe-based super alloys. Room temperature shear (torsion) strengths ranged from 75–242 MPa for Si3N4-to-Incoloy 909 joints and from 30–127 MPa for the Si3N4-to-Inconel 718 joints. At 500 °C the joint strength was 120 MPa while at 650°C and 950°C the joints strengths were less than 20 MPa. These low strengths at 650°C and 950°C were attributed to a reduction in the shrink-fit and to low braze strength at these high temperatures. Finite element analysis (FEA) and a probabilistic failure theory (CARES) were used to predict the joint strengths. The predicted joint strengths agreed well with measured joint strengths in torsional loading at 20°C. Torsion tests were also performed at 650°C. Aspects of the material systems, residual stresses, mechanical behavior, and strength predictions are presented. Two new braze alloys based on the Au-Ni-Cr-Fe system were used to overcome the poor high temperature strength. Joints made with these brazes had good strength (85 MPa and 35 N-m) at 650°C.
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Fricke, Kilian, Richard Zimmermann, Philipp Ganser, Sascha Gierlings, and Thomas Bergs. "Life-Cycle-Assessment for Rough Machining of Inconel 718 Comparing Ceramic to Cemented Carbide End Mills." In ASME Turbo Expo 2022: Turbomachinery Technical Conference and Exposition. American Society of Mechanical Engineers, 2022. http://dx.doi.org/10.1115/gt2022-82910.

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Abstract Nickel-based alloys such as Inconel 718 belong to the group of heat-resistant super alloys. Combined with good mechanical properties over a wide range of temperatures nickel alloys are used extensively in the aero engine sections exposed to elevated temperatures. Besides turbine blades and discs, integrally designed compressor rotors (Blisks) in the high-pressure compressor (HPC) are increasingly made of Ni-alloys. This is the result of an efficiency-driven increase in temperature levels in the rear compressor stages. The machining of these hard-to-machine materials is characterized by low productivity and high tool wear. Compared to the machining with conventional cemented carbide end mills, innovative SiAlON ceramics offer a significant potential to increase the performance of these machining processes while saving cooling-lubricants. Besides an increase in productivity, the evaluation of the overall environmental impact of specific manufacturing processes is gaining importance in the context of more sustainable product life-cycles. This paper focuses on the comparison of different milling strategies in the production of high-pressure compressor rotors made from Inconel 718 in a cradle-to-gate assessment based on DIN EN ISO 14040/44. Thus, the ecological impact of both the state-of-the-art and the novel SiAlON roughing strategy are evaluated considering the consumption of energy, water and compressed air as well as the tool wear. The Life-Cycle-Impact-Analysis (LCIA) will be performed as a midpoint analysis taking multiple indicators into account such as the Global Warming Potential (GWP).
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Bobzin, K., T. Schläfer, T. Warda, and M. Brühl. "Thermally Sprayed Oxidation Protection Coatings for γ-TiAl Substrates." In ITSC2010, edited by B. R. Marple, A. Agarwal, M. M. Hyland, Y. C. Lau, C. J. Li, R. S. Lima, and G. Montavon. DVS Media GmbH, 2010. http://dx.doi.org/10.31399/asm.cp.itsc2010p0060.

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Abstract Due to excellent mechanical properties and low density compared to super alloys (e.g. Ni-based alloys) Titanium Aluminide is often used as base material in the aerospace industry. But the thermodynamic conditions within turbines limit the capabilities of the material. At the moment γ-TiAl is used for parts, which have to withstand temperatures up to 700 °C. Above this temperature oxidation kinetics cause a thick oxide layer consisting of several oxides, which tend to fast chipping. Therefore the surface of the γ-TiAl is being destroyed and the material loses its excellent mechanical properties. To enable the use of this material at higher temperatures, the development of an oxidation protection coating is necessary. Several coating techniques e.g. EB-PVD were tried in the last years, but the oxidation behaviour of the γ-TiAl could not be significantly improved. Protective thermal spray coatings so far seem to be a promising technology in order to protect γ-TiAl components against oxidation. Therefore this technique was used within this work, which aims for the development of new oxidation protection coatings. A multilayer system was developed. The multilayer consists of a ceramic ZrO2-7Y2O3 coating with a NiCoCrAlY top coat. In this case the ceramic coating avoids the diffusion of Ti or Al of the γ-TiAl into the MCrAlY coating or the other way around. The NiCoCrAlY coating improved the oxidation behaviour of the Titanium Aluminide by building a dense oxide layer on top of the multilayer. The paper will give an overview about the results of the oxidation tests with the new developed multilayer concept for protection of the γ-TiAl against oxidation.
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Sidhu, Kuldeep Singh, Jing Shi, Vijay K. Vasudevan, and Seetha Ramaiah Mannava. "Residual Stress Enhancement in 3D Printed Inconel 718 Superalloy Treated by Ultrasonic Nano-Crystal Surface Modification." In ASME 2017 12th International Manufacturing Science and Engineering Conference collocated with the JSME/ASME 2017 6th International Conference on Materials and Processing. American Society of Mechanical Engineers, 2017. http://dx.doi.org/10.1115/msec2017-2918.

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Inconel 718 (IN718) is a nickel based Ni-Cr-Fe super alloy. It has a unique set of properties such as good workability, corrosion resistance, high temperature strength, favorable weldability and excellent manufacturability. Due to its wide range of applications, IN718 is an alloy of great interest for many industries. Meanwhile, additive manufacturing assisted with laser has caught much interest from researchers and practitioners in the past three decades. In this study, IN718 alloy coupons are manufactured by selective laser melting (SLM) technique. The SLMed IN718 alloys are treated by ultrasonic nanocrystal surface modification (UNSM), and the residual stress distributions underneath the surfaces are measured. It is found that residual stress mostly tensile is induced while building the part by the SLM technique. The tensile stresses can be reduced to almost zero value by post heat treatment. Moreover, the heat treatment helps to homogenize the microstructure, and results in the increase in hardness. More importantly, it is observed that UNSM effectively induces compressive residual stresses in the as-built and heat-treated parts. The residual stresses of compressive nature in as built parts has depth of around 530 μm where as in heat treated parts has a depth of around 530μm.
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Takeda, Yoichi, Hirofumi Sato, Shuhei Yamamoto, Takamichi Tokunaga, and Akio Ohji. "Evaluation of Crack Growth Behavior of Alloy 625 Under Cyclic Loading in a Steam Environment at 750°C." In ASME 2011 Power Conference collocated with JSME ICOPE 2011. ASMEDC, 2011. http://dx.doi.org/10.1115/power2011-55471.

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Advanced ultra supercritical (A-USC) steam power generation, in which high-pressure steam is raised to beyond 700°C, is being studied internationally. The creep strength of Ni-based super alloys evaluated at these high temperatures in an air environment makes these materials promising candidates for the material to be used for the structural components of these generators. Since they are exposed to high temperature steam, it is important that the effect of the environment on the degradation of these materials is investigated. In this investigation, the crack growth rate under cyclic loading in a 750°C steam environment using a compact tension specimen was evaluated. Crack length monitoring using the direct current potential drop technique was applied to the growing crack in a high temperature environment in order to evaluate the time-dependent behavior of the crack growth. The dependence of the loading rate and amplitude in terms of the stress intensity factor was obtained. The crack growth rate increased with decreasing loading rate and increasing amplitude. Multiple loading patterns were applied to a single specimen during crack length monitoring. When the loading pattern was changed to a different pattern, in most of the cases, the crack growth rate started to change and then became stable aftera transition period. The influence of intermetallics and different phases on the crack growth behavior is discussed based on the oxidation rate of these phases.
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Ramaglia, Alessandro D. "Application of a Smooth Approximation of the Schmid’s Law to a Single Crystal Gas Turbine Blade: Part 1—Theory and Governing Equations." In ASME Turbo Expo 2012: Turbine Technical Conference and Exposition. American Society of Mechanical Engineers, 2012. http://dx.doi.org/10.1115/gt2012-68848.

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In industrial practice, the choice of the most suitable material model does not solely rely on the ability of the model in describing the intended phenomena. Most of the choice is often based on a trade-off between a great variety of factors. Robustness, cost and time for the minimum testing campaign necessary to identify the model and pre-existing standard practices are only a few of them. This is particularly true in the case of nonlinear structural analyses because of their intrinsic difficulties and the higher level of skills needed to carefully exploit their full potential. So, despite the great progress in this field, in certain cases it is desirable to use plasticity models that are rate-independent and possess very simple hardening terms. This is for example the case in which long term creep can be an issue or when the designer may want to treat separately different phenomena contributing to inelastic deformation. If the material to be modelled is isotropic, commercial FE packages are able to deal with such problems in almost every case. On the contrary for anisotropic materials like Ni-based super-alloys cast as single crystals, the choice of the designer is more limited and despite the large amount of research literature on the subject, single crystal constitutive models remain quite difficult to handle, to implement into FE codes, to calibrate and to validate. Such difficulties, coupled with the unavoidable approximations introduced by any model, often force the practice of using oversimplifications of the material behaviour. In what follows this problem is addressed by showing how single crystal plasticity modelling can be reduced to the adoption of an anisotropic elastic behaviour with a sort of von Mises yield surface.
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