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
相关论文
共 12 条
  • [1] Effect of different Al contents on the microstructure, tensile and wear properties of Zn-based alloy
    Abou El-Khair, MT
    Daoud, A
    Ismail, A
    [J]. MATERIALS LETTERS, 2004, 58 (11) : 1754 - 1760
  • [2] Effect of ECAP on microstructure and mechanical properties of a commercial 6061 Al alloy produced by powder metallurgy
    Chang, SY
    Lee, KS
    Choi, SH
    Shin, DH
    [J]. JOURNAL OF ALLOYS AND COMPOUNDS, 2003, 354 (1-2) : 216 - 220
  • [3] CHOU CY, IN PRESS MAT CHEM PH
  • [4] HA TK, 2001, MAT SCI ENG A-STRUCT, V307, P198
  • [5] Improvement of mechanical properties for Al alloys using equal-channel angular pressing
    Horita, Z
    Fujinami, T
    Nemoto, M
    Langdon, TG
    [J]. JOURNAL OF MATERIALS PROCESSING TECHNOLOGY, 2001, 117 (03) : 288 - 292
  • [6] The significance of grain boundary sliding in the superplastic Zn-22% Al alloy after processing by ECAP
    Kumar, P
    Xu, C
    Langdon, TG
    [J]. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2005, 410 : 447 - 450
  • [7] Microstructures and mechanical properties of 6061 aluminum alloy processed by accumulative roll-bonding
    Lee, SH
    Saito, Y
    Sakai, T
    Utsunomiya, H
    [J]. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2002, 325 (1-2): : 228 - 235
  • [8] LONGDON TG, 1982, METALLURG T A, V13, P689
  • [9] The deformation structure of the superplastic Zn-Al alloy
    Málek, P
    [J]. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 1999, 268 (1-2): : 132 - 140
  • [10] Plastic flow and deformation homogeneity of 6061 Al during equal channel angular pressing
    Moon, BS
    Kim, HS
    Hong, SI
    [J]. SCRIPTA MATERIALIA, 2002, 46 (02) : 131 - 136
12