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

页码：1200 / 1203

页数：4