Effect of excimer laser surface melting on the microstructure and corrosion performance of the die cast AZ91D magnesium alloy

被引：92
作者：
Coy, A. E. [1 ]
Viejo, F. [1 ]
Garcia-Garcia, F. J. [1 ]
Liu, Z. [1 ]
Skeldon, P. [1 ]
Thompson, G. E. [1 ]
机构：
[1] Univ Manchester, Sch Mat, Ctr Corros & Protect, Manchester M60 1QD, Lancs, England
来源：
CORROSION SCIENCE | 2010年 / 52卷 / 02期
基金：
英国工程与自然科学研究理事会;
关键词：
Magnesium alloys; EIS; Polarisation; Passivity; SCANNING KELVIN PROBE; FORCE MICROSCOPY; WEAR-RESISTANCE; LITHIUM ALLOY; BETA-PHASE; BEHAVIOR; AA2024-T3;
D O I：
10.1016/j.corsci.2009.09.025
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Excimer laser surface melting (LSM) of the die cast AZ91D alloy has been investigated in terms of microstructure and corrosion behaviour. Excimer LSM of the alloy resulted in a highly homogeneous and refined melted microstructure, which improved the corrosion resistance of the alloy. The latter was associated with the large dissolution of intermetallic phases and the enrichment of aluminium within the melted layer. An increased number of laser Pulses resulted in thicker melted layers, but also in enhanced porosity and the formation of micro-cracks at the overlapping area. Both factors diminished the corrosion resistance of the laser-treated alloy. (c) 2009 Elsevier Ltd. All rights reserved.
引用
收藏
页码：387 / 397
页数：11
相关论文
共 40 条
  • [31] Corrosion study of AA2024-T3 by scanning Kelvin probe force microscopy and in situ atomic force microscopy scratching
    Schmutz, P
    Frankel, GS
    [J]. JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 1998, 145 (07) : 2295 - 2306
  • [32] Influence of microstructure on the corrosion of diecast AZ91D
    Song, GL
    Atrens, A
    Dargusch, M
    [J]. CORROSION SCIENCE, 1999, 41 (02) : 249 - 273
  • [33] Corrosion behaviour of AZ21, AZ501 and AZ91 in sodium chloride
    Song, GL
    Atrens, A
    Wu, XL
    Zhang, B
    [J]. CORROSION SCIENCE, 1998, 40 (10) : 1769 - 1791
  • [34] Understanding magnesium corrosion - A framework for improved alloy performance
    Song, GL
    Atrens, A
    [J]. ADVANCED ENGINEERING MATERIALS, 2003, 5 (12) : 837 - 858
  • [35] STOUK K, 1993, 15178N EUR
  • [36] VIEJO F, 2009, THIN SOLID IN PRESS
  • [37] Excimer laser surface treatment of aluminum alloy AA7075 to improve corrosion resistance
    Yue, TM
    Yan, LJ
    Chan, CP
    Dong, CF
    Man, HC
    Pang, GKH
    [J]. SURFACE & COATINGS TECHNOLOGY, 2004, 179 (2-3) : 158 - 164
  • [38] The effect of laser surface treatment on stress corrosion cracking behaviour of 7075 aluminium alloy
    Yue, TM
    Dong, CF
    Yan, LJ
    Man, HC
    [J]. MATERIALS LETTERS, 2004, 58 (05) : 630 - 635
  • [39] Roles of β phase in the corrosion process of AZ91D magnesium alloy
    Zhang, Tao
    Li, Ying
    Wang, Fuhui
    [J]. CORROSION SCIENCE, 2006, 48 (05) : 1249 - 1264
  • [40] Influence of the β-phase morphology on the corrosion of the Mg alloy AZ91
    Zhao, Ming-Chun
    Liu, Ming
    Song, Guangling
    Atrens, Andrej
    [J]. CORROSION SCIENCE, 2008, 50 (07) : 1939 - 1953
1234