Influence of Ti addition on the hydrogen induced cracking of API 5L X70 hot-rolled pipeline steel in acid sour media

被引：0
|
作者：
Joonoh Moon
Chulbong Park
Seong-Ju Kim
机构：
[1] Korea Institute of Materials Science,Ferrous Alloy Department, Advanced Metallic Materials Division
[2] Hyundai Steel Company,Sheet Products Design Team, Technical Research Center
来源：
Metals and Materials International | 2012年 / 18卷
关键词：
metals; rolling; corrosion; precipitation; hydrogen;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
In this study, Hydrogen Induced Cracking (HIC) testing of high strength API 5L grade X70 linepipe hot rolled steel containing Ti was performed to investigate the effects of (Nb, Ti, V)(C, N) particles on HIC susceptibility. By controlling chemical composition and hot rolling parameters, experimental steel with Bainitic ferrite and Bainite microstructures was fabricated. HIC testing was carried out within an acidic condition (pH=2.7±0.1) according to NACE standards with test results showing cracking propagated along coarse (Nb, Ti, V)(C, N) particles at mid-thickness. This is mainly due to centerline segregation and hydrogen blistering between matrix and coarse (Nb, Ti, V)(C, N) particles without external stress.
引用
收藏
页码：613 / 617
页数：4
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