Results 11 to 20 of about 198 (159)
LDG approximation of large deformations of prestrained plates [PDF]
Journal of Computational Physics, 2022 A reduced model for large deformations of prestrained plates consists of minimizing a second order bending energy subject to a nonconvex metric constraint. The former involves the second fundamental form of the middle plate and the later is a restriction on its first fundamental form.
Andrea Bonito +3 more
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Porosity and Dimensional Changes in Cu and Cu-Ni System [PDF]
Engineering and Technology Journal, 1977 The porosity formed during interdiffusion in OFHC Cu/Ni diffusion couples, and in OFHC Cu discs and cylinders due to hydrogen have been studied. Different volumes of porosity and dimensional changes were obtained after diffusion annealing in vacuum and ...
Abdul-Razzaq Ismail Kheder
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Journal of Materials Research and Technology, 2023 A novel heterogeneous-structure (HS) twinning-induced plasticity (TWIP) steel containing alternating columnar grain (CG) and equiaxed grain (EG) domains was successfully fabricated via prestraining, partial recrystallization, and directional ...
Dan Wang +6 more
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Mechanical Anisotropy Induced by Strain Path Change for AZ31 Mg Alloy Sheet
Metals, 2020 The variation of strain paths induces anisotropy during practical sheet forming processes, which is very important for the subsequent processing technology of anisotropic Mg alloys.
Chong Yang +8 more
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The roles of stress state and pre-straining on Swift effect for an extruded AZ31 Mg alloy
Journal of Magnesium and Alloys, 2023 The Swift effect of Mg alloy is sensitive to initial texture. However, dislocation slip is the main deformation mechanism during torsion of Mg alloy. The underlying relation of Swift effect and dislocation slip is still not clarified.
Chong Yang +4 more
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Temperature-Dependent Hydrogen Embrittlement of Austenitic Stainless Steel on Phase Transformation
Metals, 2022 A critical issue that needs to be addressed for wider utilization of hydrogen as fuel is protection against hydrogen embrittlement during cryogenic storage as it weakens the microstructure bonding force of metals through hydrogen penetration.
Young-Hwan Choi +8 more
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Tikrit Journal of Engineering Sciences, 2008 The strain path for sheet metal may be changed during forming , this may be affect the forming limit curve (FLC) . In this work the FLC before and after prestraining was determined for aluminum alloy (2024 T3) to study the effect of this type of ...
W. J. Ali, T. F. Sultan
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Effect of pre-straining on twinning, texture and mechanical behavior of magnesium alloys A-review
Journal of Materials Research and Technology, 2020 Introducing {101¯2} extension twin and their variants in magnesium alloys is one of the cost-effective practical approaches for re-assigning the crystallographic axes distributions in wrought magnesium alloys.
Abdul Malik +5 more
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Metals, 2018 Effects of microstructural changes induced by prestraining on hydrogen transport and hydrogen embrittlement (HE) of austenitic stainless steels were studied by hydrogen precharging and tensile testing.
Yanfei Wang, Xuanpei Wu, Weijie Wu
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Crystals, 2020 Studies have suggested that brittle fractures occur in steel because microcracks in the brittle layer at grain boundaries propagate as a result of the increase in piled-up dislocations. Therefore, prestraining can approach the limits of a material, which
Hiroaki Kosuge +3 more
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