文档介绍：Materials Science and Engineering A 513–514 (2009) 122–127
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Materials Science and Engineering A
journal homepage: ate/msea
Improving both strength and ductility of a Mg alloy through a large number
of ECAP passes
Aibin Ma a,∗, Jinghua Jiang a,c, Naobumi Saito b, Ichinori Shigematsu b, Yuchun Yuan a,
Donghui Yang a, Yoshinori Nishida b
a College of Materials Science and Engineering, Hohai University, Nanjing 210098, China
b National Institute of Advanced Industrial Science and Technology, 2266-98 Anagahora, Shimoshidami, Moriyama-ku, Nagoya 463-8560, Japan
c Department of Materials Science and Engineering, North Carolina State University, Raleigh, NC 27695-7919, USA
article info abstract
Article history: Ultra-fine-grained (UFG) ZE41A aeronautic magnesium alloy was achieved through multi-pass equal-
Received 25 November 2008 channel angular pressing (EACP) at 603 K and subsequently tested in tension from room temperature
Received in revised form 14 January 2009 (RT) to 588 K. An extraordinary phenomenon was first observed, improving both ductility and strength
Accepted 15 January 2009
of hcp-structured UFG Mg alloy after a large number of ECAP passes. The results demonstrate the pressed
ZE41A alloy after 8 passes has higher tensile strength but relatively lower ductility than the unpressed
Keywords: sample from RT to