Decarburization, grain boundary segregation of P and primary water stress corrosion cracking in a low-alloy steel

被引：11
|
作者：
Heo, N. H. [1 ]
Jung, Y. C. [1 ]
Lee, J. K. [2 ]
Kim, K. T. [1 ]
机构：
[1] Korea Elect Power Res Inst, Taejon 305380, South Korea
[2] Hones Co, Taejon 305380, South Korea
来源：
SCRIPTA MATERIALIA | 2008年 / 59卷 / 11期
关键词：
Decarburization; P segregation; Primary water stress corrosion cracking; Low-alloy steels;
D O I：
10.1016/j.scriptamat.2008.08.016
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
Decarburization causes intergranular brittleness of a low-alloy steel, arising from P segregation at grain boundaries. The grain boundary segregation concentration of P increases with decreasing decarburization temperature and increasing holding time at a temperature, resulting in the drastic decrease in intergranular fracture strength. It was confirmed that Surface oxide films formed along the grain boundaries during decarburization act as a prerequisite factor for intergranular stress corrosion cracking of the low-alloy steel in a primary water environment. (c) 2008 Published by Elsevier Ltd. on behalf of Acta Materialia Inc.
引用
收藏
页码：1200 / 1203
页数：4
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