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论文类型：期刊论文

发表时间：2011-02-25

发表刊物：MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING

收录刊物：Scopus、SCIE、EI

卷号：528

期号：4-5

页面范围：2093-2099

ISSN号：0921-5093

关键字：Aluminium alloys; High pressure torsion; Strain path

摘要：The effect of Mg addition on strengthening of aluminium alloys was studied by monotonic, cyclic and single reversal deformation in high pressure torsion. The results show the extent of strengthening varies between these three processing methods and are dependent on Mg content. There is a relatively low hardness increment in commercially pure aluminium, slightly higher hardness increment in an Al-1 Mg alloy and significant hardness increment in an Al-2Mg alloy. The difference of strengthening due to strain paths is discussed in terms of geometrically necessary dislocations. (C) 2010 Elsevier B.V. All rights reserved.