Sulfide stress cracking resistance of API-X100 high strength low alloy steel

被引:106
作者
Al-Mansour, M. [2 ]
Alfantazi, A. M. [1 ]
El-boujdaini, M. [3 ]
机构
[1] Univ British Columbia, Dept Mat Engn, Vancouver, BC V5Z 1M9, Canada
[2] Saudi Aramco, Dhahran 31311, Saudi Arabia
[3] CANMET Mat Technol Lab, Ottawa, ON, Canada
基金
加拿大自然科学与工程研究理事会;
关键词
Corrosion; Environmental performance; Microstructure; Ferrous metals and alloys; MICROSTRUCTURE; SUSCEPTIBILITY;
D O I
10.1016/j.matdes.2009.05.025
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
Sulfide Stress Cracking (SSC) of API-X100 high strength low alloy steel was evaluated in NACE solution "A" at room temperature. The corrosion rate, utilizing electrochemical polarization techniques, in the solution was 97 mpy. Proof ring testing, per NACE TM-0177, generated an SSC threshold stress value of 46% of yield strength. SSC susceptibility was caused by the high corrosion rate which formed corrosion pits that acted as crack initiation sites on the metal surface and provided more hydrogen to migrate into the steel. In addition, the X100 inhomogeneous microstructure provided a high density of hydrogen traps which promoted hydrogen embrittlement. (C) 2009 Elsevier Ltd. All rights reserved.
引用
收藏
页码:4088 / 4094
页数:7
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