Non-equilibrium grain boundary segregation of phosphorus under a high applied tensile stress in a 2.25Cr1Mo steel

被引：14

作者：

Song, S. -H. ^{[1
]}

Wu, J. ^{[1
]}

Yuan, Z. -X. ^{[2
]}

Weng, L. -Q. ^{[1
]}

Xi, T. -H. ^{[3
]}

机构：

[1] Harbin Inst Technol, Shenzhen Grad Sch, Dept Mat Sci & Engn, Shenzhen 518055, Peoples R China

[2] Wuhan Univ Sci & Technol, Sch Met & Mat, Wuhan 430081, Peoples R China

[3] Wuhan Iron & Steel Corp, Ctr Technol, Wuhan 430080, Peoples R China

来源：

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2008年 / 486卷 / 1-2期

基金：

中国国家自然科学基金;

关键词：

non-equilibrium segregation; grain boundaries; embrittlement; ferritic steels;

D O I：

10.1016/j.msea.2007.09.015

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Grain boundary segregation of phosphorus under a 350 MPa tensile stress at 520 degrees C in a 0.025 wt.% P-doped 2.25Cr1Mo steel, which has already been thermally equilibrated, is examined using Auger electron spectroscopy. The segregation of phosphorus during stress ageing has a non-equilibrium characteristic, which has two phosphorus segregation peaks over its equilibrium segregation level, one of which is mainly due to the vacancy-phosphorus complex effect and the other due to the diffusional creep effect. (c) 2007 Elsevier B.V. All rights reserved.

引用

页码：675 / 679

页数：5

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