Effects of Mg contents on microstructures and corrosion behaviors of homogenization Al-Zn-Mg-Cu alloys

被引：17

作者：

Huang, Rensong ^{[1
]}

Yang, Hongfu ^{[1
]}

Sun, Peng ^{[1
]}

Zheng, Shanju ^{[1
]}

Li, Mengnie ^{[1
]}

Duan, Yonghua ^{[1
]}

机构：

[1] Kunming Univ Sci & Technol, Fac Mat Sci & Engn, Kunming 650093, Peoples R China

来源：

CORROSION SCIENCE | 2023年 / 223卷

关键词：

Al-Zn-Mg-Cu Alloys; Microstructure; Corrosion behaviors; Homogenization; Mg element; GRAIN-BOUNDARY MICROCHEMISTRY; 2ND PHASE PARTICLES; LOCALIZED CORROSION; ELECTROCHEMICAL-BEHAVIOR; INTERGRANULAR CORROSION; HEAT-TREATMENT; STRENGTH; RESISTANCE; CRACKING; RECRYSTALLIZATION;

D O I：

10.1016/j.corsci.2023.111461

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

This study delved into the influence of Mg content on the microstructure and corrosion behavior of homogenized Al-Zn-Mg-Cu alloys. The findings unveiled that alloys featuring a moderate Mg content showcased an exceptionally low immersion corrosion rate of 0.0789 mm/a. A notable 22.3 % reduction in average grain size led to a significant 57.2 % drop in immersion corrosion rate. Furthermore, the augmentation of the Mg(Zn, Al, Cu)2 phase within the grains contributed to a decrease in the maximum immersion corrosion depth of the alloy. These novel findings offer fresh insights and hold potential for enhancing the corrosion resistance of homogenized Al-Zn-MgCu alloys.

引用

页数：18