Effect of heat treatments on the hydrogen embrittlement susceptibility of API X-65 grade line-pipe steel

[摘要] Delayed failure tests were carried out on hydrogen charged API X-65 grade line-pipe steel in as received (controlled rolled), normalized, and quenched and tempered conditions. The resistance to hydrogen embrittlement was found in the order of controlled rolled $\gt$ quenched and tempered $\gt$ normalized. The fracture mode in the hydrogen embrittled steel was ductile.

[学科分类] 材料工程

[关键词] Hydrogen embrittlement;delayed failure;HSLA steel;controlled rolling.