Effect of ageing on precipitation evolution and corrosion behaviour of Al-Zn-Mg-Cu alloy

被引：4

作者：

Li, Guisheng ^{[1
]}

Xu, Gaoshan ^{[1
]}

Sun, Rui ^{[1
]}

Liang, Shan ^{[2
]}

Li, Jinghui ^{[1
]}

Zhang, Mingya ^{[1
]}

机构：

[1] Anhui Univ Technol, Sch Met Engn, Maanshan 243002, Peoples R China

[2] Anhui Univ Technol, Sch Innovat Educ, Maanshan, Peoples R China

来源：

MATERIALS SCIENCE AND TECHNOLOGY | 2023年 / 39卷 / 02期

关键词：

Al-Zn-Mg-Cu alloy; ageing treatment; precipitates; corrosion behavior; ROOM-TEMPERATURE ECAP; ZR MICROALLOYING ADDITIONS; MECHANICAL-PROPERTIES; ALUMINUM-ALLOY; CRACKING BEHAVIOR; GRAIN-REFINEMENT; MICROSTRUCTURE; TEXTURE; TIME; SC;

D O I：

10.1080/02670836.2022.2105502

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The Al-Zn-Mg-Cu alloy was subjected to 4 passes equal channel angular pressing (ECAP) at 400 degrees C, followed by different solutions and ageing treatments. The size, type and distribution of precipitates in aluminium matrix are different in different ageing treatments. In single-stage ageing, a large number of eta ' precipitates and Guinier-Preston-II (GP-II) zones are generated in the aluminium matrix. The precipitates are mainly MgZn2 (eta) precipitates and eta ' precipitates during the double-stage ageing. The size and type of precipitates in three-stage ageing are similar to those in two-stage ageing. Simultaneously, the single-stage ageing sample has poor corrosion resistance and good hardness. Two-stage ageing and three-stage ageing samples have better corrosion resistance, but their hardness is lower than that of single-stage ageing.

引用

页码：177 / 186

页数：10

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