Offset Effect of Chromium on the Adverse Impact of Manganese in a Low-C Medium-Mn Steel with Reversed Austenite in the Neutral Salt Spray Condition

被引：13

作者：

Su, Guanqiao ^{[1
]}

Gao, Xiuhua ^{[1
]}

Zhang, Dazheng ^{[1
]}

Cui, Chenshuo ^{[1
]}

Du, Linxiu ^{[1
]}

Yu, Chi ^{[2
]}

Hu, Jun ^{[1
]}

Liu, Zhenguang ^{[3
]}

机构：

[1] Northeastern Univ, State Key Lab Rolling & Automat, Shenyang 110819, Liaoning, Peoples R China

[2] Northeastern Univ Qinhuangdao, Sch Resource & Mat, Qinhuangdao 061000, Peoples R China

[3] Jiangsu Univ Sci & Technol, Sch Mat Sci & Engn, Zhenjiang 212003, Peoples R China

来源：

CORROSION | 2017年 / 73卷 / 11期

关键词：

austenite; corrosion rate; microstructure; neutral salt spray; rust; steel; ATMOSPHERIC-CORROSION-RESISTANCE; ATOM-PROBE TOMOGRAPHY; LOW-ALLOY STEELS; MECHANICAL-PROPERTIES; WEATHERING STEEL; STAINLESS-STEEL; PIT INITIATION; RUST; MARTENSITE; BEHAVIOR;

D O I：

10.5006/2433

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

This work used the neutral salt spray test to investigate the effects of microstructure and alloy elements on the corrosion process of medium manganese steel by analyzing the microstructure, corrosion rates, morphology, and corrosion phase of the surface, and cross-section products, as well as the elemental distribution and valence state of the rust films. The results show that the microstructure of the tested steel consists of martensite and reversed transformation austenite; the corrosion behavior of the designed steel is affected by the microstructure and alloy elements. Mn-rich compounds play a negative role during the corrosion process; with increasing corrosion time and in the presence of anti-corrosion elements, Cr may form a barrier to repel the cation permeability produced by Mn-rich compounds to stabilize the corrosion rate. In addition, the reversed transformation austenite plays a positive role in regulating the corrosion process.

引用

页码：1367 / 1380

页数：14

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