Analysis of heterogeneities in strain and microstructure in aluminum alloy and magnesium processed by high-pressure torsion

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• 作者：Subrata Panda^a ; ^b ; ^{subrata.panda@univ-lorraine.fr} ; Laszlo S. Toth^a ; ^b ; ^{laszlo.toth@univ-lorraine.fr} ; Jean-Jacques Fundenberger^a ; ^b ; ^{jean-jacques.fundenberger@univ-lorraine.fr} ; Olivier Perroud^a ; ^b ; ^{olivier.perroud@univ-lorraine.fr} ; Julien Guyon^a ; ^b ; ^{julien.guyon@univ-lorraine.fr} ; Jianxin Zou^a ; ^c ; ^{zoujx@sjtu.edu.cn} ; Thierry Grosdidier^a ; ^b ; ^{thierry.grosdidier@univ-lorraine.fr}
• 关键词：HPT ; X-ray tomography ; Heterogeneity ; Shear strain ; Microtexture ; EBSD
• 刊名：Materials Characterization
• 出版年：2017
• 出版时间：January 2017
• 年：2017
• 卷：123
• 期：Complete
• 页码：159-165
• 全文大小：2177 K
• 卷排序：123

文摘

HPT processing was conducted on bulk specimens thicker than the usual thin-disks. The Al alloy (A5086) and commercial purity magnesium samples were compared. Distributions of strain and microhardness were evaluated in the radial and axial direction. Plastic deformation is highly localized in the middle plane at outer edge in both materials. Different DRX rates governed the differences in microstructure and hardening behavior.