RETRACTED: Electrochemical behavior of magnesium alloys strained in buffer solutions (Retracted article. See vol. 52, pg. 6395, 2007)

被引:19
作者
Ben-Hamu, G.
Eliezer, A.
Gutman, E. M.
机构
[1] Ben Gurion Univ Negev, Dept Mat Engn, IL-84105 Beer Sheva, Israel
[2] Sami Shamoon Coll Engn, Corros Res Ctr, IL-84100 Beer Sheva, Israel
关键词
magnesium alloys; die cast and extruded; mechano-chemical effect; electrochemical tests; MECHANOELECTROCHEMICAL BEHAVIOR; CORROSION-FATIGUE; STRESS; AZ91D;
D O I
10.1016/j.electacta.2006.05.009
中图分类号
O646 [电化学、电解、磁化学];
学科分类号
081704 ;
摘要
The mechano-chemical effect in a group of five die cast and extruded magnesium alloys has been investigated. Corrosion rates were determined as a function of both the processing conditions, used to produce the alloys, and the applied tensile strain by means of potentiodynamic polarisation measurements and immersion tests. These were conducted at 25 degrees C in several borate buffer solutions containing NaCl, Mg(OH)(2) or NaOH. In order to understand the reason for the advantages of AM50 Alloy under stress corrosion, TEM analysis were performed. This analysis revealed the location of dislocation pile-ups at a further stage in the stressed AM50 alloy which were found to be beneficial to it is resistance to stress-corrosion cracking. It is shown that the mechano-chemical effect is strongly dependent on the aluminium content in the alloy. (c) 2006 Elsevier Ltd. All rights reserved.
引用
收藏
页码:304 / 313
页数:10
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