Effect of gradient grain structures on corrosion resistance of extruded Al-Zn-Mg-Cu alloy

被引：23
作者：
Zhao, Jiuhui [1 ]
Deng, Yunlai [2 ,3 ]
Tang, Jianguo [1 ,2 ]
Zhang, Jin [1 ]
机构：
[1] Cent South Univ, Light Alloy Res Inst, Changsha, Peoples R China
[2] Cent South Univ, Sch Mat Sci & Engn, Changsha, Peoples R China
[3] Cent South Univ, State Key Lab High Performance & Complex Mfg, Changsha, Peoples R China
来源：
JOURNAL OF ALLOYS AND COMPOUNDS | 2020年 / 832卷
关键词：
MECHANICAL-PROPERTIES; ZR ADDITIONS; STRAIN-RATE; BEHAVIOR; RECRYSTALLIZATION; SC; PREPRECIPITATION; TEMPERATURE; STRENGTH;
D O I：
10.1016/j.jallcom.2020.154911
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
The EXCO and IGC corrosion behavior of an extruded rod of Al–Zn–Mg–Cu alloy with gradient granular grain structure were investigated. The corrosion resistance increased gradually from the center to the surface of the extruded rod due to the increase of distance between η precipitates and the decrease of the precipitate length along grain/sub-grain boundary, which is assumed as the result of the gradually decrease of grain/sub-grain size from the center to the surface. © 2020 Elsevier B.V.
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页数：6
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