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
收藏
页码：313 / 320
页数：8
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