Mechanical properties of submicron-grained aluminum

被引：117
作者：
Yu, CY [1 ]
Sun, PL [1 ]
Kao, PW [1 ]
Chang, CP [1 ]
机构：
[1] Natl Sun Yat Sen Univ, Inst Mat Sci & Engn, Kaohsiung 804, Taiwan
来源：
SCRIPTA MATERIALIA | 2005年 / 52卷 / 05期
关键词：
submicron-grained aluminum; mechanical properties; equal channel angular extrusion (ECAE);
D O I：
10.1016/j.scriptamat.2004.10.035
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
Submicron-grained (SMG) aluminum produced by equal channel angular extrusion exhibits high yield strength (262MPa) and good ductility (28% total elongation) at 77 K, despite the poor tensile ductility at room temperature. For this SMG aluminum, flow localization was observed in both tensile and compressive tests. The yield strength is about 20% higher in compression than in tension over the grain size range of 0.35-0.75 mum, and this tension-compression asymmetry disappears for larger grain sizes. (C) 2004 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
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收藏
页码：359 / 363
页数：5
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