Nanomechanics of Mg-Al intermetallic compounds

被引：56
|
作者：
Zhang, M. -X. [1 ]
Huang, H. [1 ]
Spencer, K.
Shi, Y. -N. [2 ]
机构：
[1] Univ Queensland, Sch Mech & Min Engn, Brisbane, Qld 4072, Australia
[2] Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China
来源：
SURFACE & COATINGS TECHNOLOGY | 2010年 / 204卷 / 14期
基金：
澳大利亚研究理事会;
关键词：
Magnesium alloy; Intermetallic compound; Nanoindentation; Kinetic metallization; Cold spray; MAGNESIUM; CORROSION; ALLOYS;
D O I：
10.1016/j.surfcoat.2009.11.031
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
Cold spraying of pure Al powder on a pure Mg substrate together with subsequent post-spray annealing treatment produced Mg17Al12 (beta-phase) and Mg2Al3 (gamma-phase) intermetallic layers on the surface of the substrate. These layers showed significantly better nanomechanical properties, including the reduced elastic modulus and nanohardness, which were determined using nanoindentation, than commercial purity Mg and AZ91 alloys. Combined with their improved corrosion resistance, it is believed that both the gamma-phase and the beta-phase layers can provide effective protection of Mg alloys from wear and corrosion. The effect of post-spray annealing process on the formation of thick, uniform and dense intermetallic layers on pure Mg substrate was also investigated. (C) 2009 Elsevier B.V. All rights reserved.
引用
收藏
页码：2118 / 2122
页数：5
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