Book ChapterDOI
An Investigation of Detwinning Behavior of In-plane Compressed E-form Mg Alloy During the In Situ Tensile Test
Jaiveer Singh,Min-Seong Kim,Seong-Eum Lee,Joo-Hee Kang,Shi-Hoon Choi +4 more
- pp 201-206
TLDR
In this article, the detwinning phenomenon of in-plane compressed E-form magnesium alloy sheet was investigated using in situ tensile test combined with electron backscattered diffraction (EBSD) technique.Abstract:
In this study, we investigated the detwinning phenomenon of in-plane compressed E-form magnesium (Mg) alloy sheet systematically using in situ tensile test combined with electron backscattered diffraction (EBSD) technique. Microstructure and microtexture evolutions were analyzed at different tensile strains during the in situ tensile test. The detwinning phenomenon in E-form Mg alloy was found to be linked to both twin boundary mobility and the interaction of their boundaries with dislocations. The pre-compressed sheet of E-form Mg alloy effectively accommodated the thickness direction strains generated during the in situ tensile test. The effect of detwinning on formability and mechanical behavior of the E-form Mg alloy was also examined. EBSD results indicate that most of the deformation twins formed during in-plane compression were removed when the load is reversed during the in situ tensile test.read more
References
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Journal ArticleDOI
Improving the room temperature stretch formability of a Mg alloy thin sheet by pre-twinning
TL;DR: In this article, the activation of tensile twinning in the pre-twinned region, which can effectively accommodate the through-thickness strain during stretch forming, is assumed to be the main reason of stretch formability improvement.
Journal ArticleDOI
The effect of initial texture on micromechanical deformation behaviors in Mg alloys under a mini-V-bending test
TL;DR: In this paper, the effect of deformation twinning on the strain localization and crack initiation was investigated using a mini-V-bending test using a resolved shear stress (RSS) criterion and microstructure based crystal plasticity finite element method (CPFEM).
Journal ArticleDOI
Anisotropic Hardening of Sheet Metals at Elevated Temperature: Tension-Compressions Test Development and Validation
TL;DR: In this article, a test equipment has been developed to measure the in-plane cyclic behavior of sheet metals at elevated temperatures, which can be wellsuited to measure cyclic material behavior, especially the anisotropic and asymmetric hardening of lightweight materials.
Journal ArticleDOI
Intragranular twinning, detwinning, and twinning-like lattice reorientation in magnesium alloys
TL;DR: In this paper, a rolled Mg alloy was selected as a model system to investigate the extension twinning behaviors and characteristics of parent-twin interactions by nondestructive in situ 3D synchrotron X-ray microbeam diffraction.
Journal ArticleDOI
Effect of twinning and detwinning on the spring-back and shift of neutral layer in AZ31 magnesium alloy sheets during V-bend
Lifei Wang,Lifei Wang,Guangsheng Huang,Tingzhuang Han,Ehsan Mostaed,Fusheng Pan,Maurizio Vedani +6 more
TL;DR: In this article, the effect of twinning and detwinning on springback and shift of neutral layer, pre-stretch (PRS) of 3% and 5%, and pre-compression (PRC) of 1, 3%, and 5% along rolling direction was conducted in an AZ31 magnesium alloy sheets at room temperature.
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