Effect of passive film on mechanical properties of martensitic stainless steel 15-5PH in a neutral NaCl solution

被引：50

作者：

Guo, Qiang ^{[1
]}

Liu, Jianhua ^{[1
]}

Yu, Mei ^{[1
]}

Li, Songmei ^{[1
]}

机构：

[1] Beihang Univ, Sch Mat Sci & Engn, Minist Educ, Key Lab Aerosp Adv Mat & Performance, Beijing 100191, Peoples R China

来源：

APPLIED SURFACE SCIENCE | 2015年 / 327卷

基金：

中国国家自然科学基金;

关键词：

Martensitic stainless steel; Passive film; Mechanical properties; NaCl solution; STRESS-CORROSION CRACKING; NANOCRYSTALLINE SURFACE; 304-STAINLESS-STEEL; TEMPERATURE; FRACTURE; ALLOY; BEHAVIOR; CHLORIDE;

D O I：

10.1016/j.apsusc.2014.11.154

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The effect of passive film on mechanical properties of the martensitic stainless steel 15-5PH in neutral 3.5 wt% NaCl solution was investigated, using surface analysis techniques, electrochemical measurements and slow strain rate technique. In neutral 3.5 wt% NaCl solution, the passive film formed at passivity potential is mainly divided into iron oxides-rich outer layer (FeO, Fe2O3) and chromium oxides-rich inner layer (Cr2O3, Cr(OH)(3)). During crack propagation, the passive film reduced formation of micro-cracks and micro-cleavages around the crack tip, and as a consequence, remarkably increased the fracture ductility of the martensitic stainless steel. (C) 2014 Elsevier B.V. All rights reserved.

引用

页码：313 / 320

页数：8

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