Growth characteristics of stress corrosion cracking in high-strength 7075 aluminum alloy in sodium chloride solutions

被引：6

作者：

Fujii, Tomoyuki ^{[1
]}

Ito, Daiki ^{[1
]}

Shimamura, Yoshinobu ^{[1
]}

机构：

[1] Shizuoka Univ, Dept Mech Engn, 3-5-1 Johoku,Naka Ku, Hamamatsu 4328561, Japan

来源：

ENGINEERING FRACTURE MECHANICS | 2023年 / 292卷

关键词：

Stress corrosion cracking; Crack growth rate; Aluminum alloy; Corrosion product; MICROSTRUCTURE; RATES;

D O I：

10.1016/j.engfracmech.2023.109657

中图分类号：

O3 [力学];

学科分类号：

08 ; 0801 ;

摘要：

Stress corrosion cracking occurs in alloys subjected to tension in specific corrosive environments. Corrosion products that affect crack growth can be formed. This study aims to clarify their influence on the crack growth of 7075-T651 aluminum alloy in NaCl solution and proposes a method to obtain the crack growth property. Crack growth tests reveal that corrosion products create crack bridging which hinders crack opening, and as a result, the crack growth is decelerated. Hence, to obtain the crack growth property in 7075-T651 in NaCl solution, it is effective to use additives that prevent the formation of corrosion products.

引用

页数：14

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