The evolution of homogeneity during processing of commercial purity aluminium by ECAP

被引：3
作者：
Alhajeri, Saleh N. [1 ]
Gao, Nong [1 ]
Langdon, Terence G. [1 ]
机构：
[1] Univ Southampton, Sch Engn Sci, Mat Res Grp, Southampton SO17 1BJ, Hants, England
来源：
NANOMATERIALS BY SEVERE PLASTIC DEFORMATION IV, PTS 1 AND 2 | 2008年 / 584-586卷
关键词：
aluminium; equal-channel angular pressing; hardness; homogeneity;
D O I：
10.4028/www.scientific.net/MSF.584-586.446
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
Billets of a commercial purity aluminium Al-1050 alloy were processed by equal-channel angular pressing (ECAP) for up to a maximum of 6 passes. Following processing, the billets were sectioned and hardness measurements were recorded on both longitudinal and transverse sections. These measurements showed the hardness increases significantly in the first pass and continues to increase by small amounts in subsequent passes. Initially, there are regions of lower hardness running in bands near the top and bottom surface of each billet. The region of lower hardness near the upper surface disappears with increasing numbers of passes but near the bottom surface the lower hardness remains even after 6 passes. The results show that, neglecting the small region near the bottom of the billet. there is an excellent potential for achieving microstructural homogeneity within the Al-1050 alloy after pressing through a sufficient number of passes in ECAP.
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收藏
页码：446 / 451
页数：6
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