A higher corrosion resistance for a bainitic steel with Al instead of Si

被引：10

作者：

Lv, Bo ^{[1
]}

Zhang, Zhimao ^{[1
]}

Yang, Zhinan ^{[3
]}

Zhang, Fucheng ^{[2
,3
]}

Zheng, Chunlei ^{[2
]}

He, Yarong ^{[1
]}

机构：

[1] Yanshan Univ, Coll Environm & Chem Engn, Qinhuangdao 066004, Hebei, Peoples R China

[2] Yanshan Univ, State Key Lab Metastable Mat Sci & Technol, Qinhuangdao 066004, Hebei, Peoples R China

[3] Yanshan Univ, Natl Engn Res Ctr Equipment & Technol Cold Strip, Qinhuangdao 066004, Peoples R China

来源：

MATERIALS LETTERS | 2016年 / 173卷

基金：

美国国家科学基金会;

关键词：

Metals and alloys; Corrosion; Stress corrosion cracking; Rust layer; Phase composition; CARBON-STEEL; ACCELERATION; PERFORMANCE; MARINE; CR;

D O I：

10.1016/j.matlet.2016.02.148

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The stress corrosion and neutral salt spray corrosion behaviours of two bainitic steels, with Si and/or Al respectively, were studied. Results show that adding Al instead of Si in steel, not only notably reduces stress corrosion cracking susceptibility which efficiently suppresses the occurrence of cracking for stress corrosion, but reduces the corrosion rate of steel in neutral salt spray condition, referring to the weight loss and thickness of rust layer. Phase composition reveals that more beta-FeOOH and Si in the rust layer of steel with Si makes the rust layer loose and increases corrosion rate, and more alpha-FeOOH in the rust layer of steel with Al improves the corrosion resistance of the steel. Also, Al facilitates the formation of a compact oxide layer which can increase the corrosion resistance. (C) 2016 Elsevier B.V. All rights reserved.

引用

页码：95 / 97

页数：3

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