Effects of cross-channel extrusion on the micirostructures and superplasticity of a Zn-22 wt.% Al eutectoid alloy

被引：35
作者：
Chou, Cheng-Yu
Lee, Sheng-Long [1 ]
Lin, Jing-Chie
Hsu, Ching-Miow
机构：
[1] Natl Cent Univ, Dept Mech Engn, Inst Mat Sci & Engn, Jhongli, Taiwan
[2] Natl Cent Univ, Dept Mech Engn, Jhongli, Taiwan
来源：
SCRIPTA MATERIALIA | 2007年 / 57卷 / 10期
关键词：
severe plastic deformation; Zn-22 wt.% Al; superplasticity;
D O I：
10.1016/j.scriptamat.2007.04.029
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
The purpose of this study was to investigate the effects of cross-channel extrusion on the microstructures and superplasticity of a Zn-22 wt.% Al alloy. Extrusion gradually transforms the initial laminar Al-rich phase into a spherical shape, and the particle sizes are refined to 0.3 and 1 mu m at extrusion temperatures of 373 and 473 K, respectively. The size and uniformity of the Al-rich phase results in a superplasticity that is enhanced significantly after extrusion for up to 10 passes. (c) 2007 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
引用
收藏
页码：972 / 975
页数：4
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