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Indexed by:期刊论文

Date of Publication:2011-02-25

Journal:MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING

Included Journals:Scopus、SCIE、EI

Volume:528

Issue:4-5

Page Number:2093-2099

ISSN No.:0921-5093

Key Words:Aluminium alloys; High pressure torsion; Strain path

Abstract: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.