Change of deformation mechanisms in ultrafine grained Mg-Zn-Zr-Ca alloy

• 柴田, 曉伸

• 辻, 伸泰

• Shibata, Akinobu

• Sasaki, Taisuke

• Hono, Kazuhiro

• Tsuji, Nobuhiro

抄録

In this study, a fully recrystallized ultrafine grained (UFG) Mg-Zn-Zr-Ca alloy was successfully fabricated by a process including high pressure torsion (HPT) and subsequent rapid annealing. Room temperature tensile test revealed that the UFG Mg alloy with a mean grain size of 0.98 μm exhibited simultaneously enhanced strength and ductility compared to those of the coarse grained counterpart (grain size 57 μm). Observation of deformation microstructures revealed that {10-12} deformation twinning and basal slip were the dominant deformation mechanisms in the coarse grained specimen, while deformation twinning was significantly inhibited but non-basal slip systems seemed activated in the UFG specimen. The reason for the enhanced mechanical properties in the UFG specimen was discussed based on the change of deformation mechanisms observed.

収録刊行物

• IOP Conference Series: Materials Science and Engineering

  IOP Conference Series: Materials Science and Engineering 194 012016-, 2017-05-08

  IOP Publishing

詳細情報

• CRID: 1050845763137908096
• NII論文ID: 120006534637
• ISSN: 17578981
• ISSN: 1757899X
• DOI: 10.1088/1757-899x/194/1/012016
• HANDLE: 2433/234987
• Web Site: http://stacks.iop.org/1757-899X/194/i=1/a=012016/pdf
• Web Site: http://stacks.iop.org/1757-899X/194/i=1/a=012016?key=crossref.63797c05b32e5c5c74cfbe20fcd76063
• 本文言語コード: en
• 資料種別: journal article
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