Three-dimensional representations of hardness distributions after processing by high-pressure torsion

被引：54
作者：
Xu, Cheng [1 ,2 ]
Langdon, Terence G. [1 ,2 ,3 ]
机构：
[1] Univ So Calif, Dept Aerosp & Mech Engn, Los Angeles, CA 90089 USA
[2] Univ So Calif, Dept Mat Sci, Los Angeles, CA 90089 USA
[3] Univ Southampton, Sch Engn Sci, Mat Res Grp, Southampton SO17 1BJ, Hants, England
来源：
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2009年 / 503卷 / 1-2期
关键词：
Aluminum; Hardness; High-pressure torsion; Homogeneity; SEVERE PLASTIC-DEFORMATION; COMMERCIAL PURITY ALUMINUM; MICROSTRUCTURAL EVOLUTION; GRAIN-REFINEMENT; ALLOY; HOMOGENEITY; NICKEL; MICROHARDNESS; COPPER; ECAP;
D O I：
10.1016/j.msea.2008.04.083
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
The Vickers microhardness was recorded on the polished surfaces of disks of pure aluminum and an Al-6061 alloy after processing by high-pressure torsion. The results are shown in three-dimensional representations that reveal clearly the gradual evolution towards a homogeneous structure. This evolution is reasonably rapid in pure Al but it is slower in the alloy due to the lower rate of recovery. The results show evolution is assisted by increasing the numbers of turns and/or the imposed pressure. The results reveal significant differences between pure Al and the Al-6061 alloy which are consistent with earlier results obtained during processing by equal-channel angular pressing. (C) 2008 Elsevier B.V. All rights reserved.
引用
收藏
页码：71 / 74
页数：4
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