Hydrogen embrittlement properties of ultra high-strength low alloy TRIP-aided steels with bainitic ferrite matrix

被引：0

作者：

Hojo, Tomohiko

Sugimoto, Koh-ichi

Mukai, Yoh-ichi

Akamizu, Hiroshi

Ikeda, Shushi

机构：

[1] Shinshu Univ, Fac Engn, Nagano 3808553, Japan

[2] Kobe Steel Ltd, Res & Dev Labs, Kobe, Hyogo, Japan

[3] Kobe Steel Ltd, Mat Res Lab, Kobe, Hyogo, Japan

来源：

TETSU TO HAGANE-JOURNAL OF THE IRON AND STEEL INSTITUTE OF JAPAN | 2006年 / 92卷 / 02期

关键词：

TRIP-aided steel; ultra high strength steel; retained austenite; hydrogen embrittlement; delayed fracture; SSRT;

D O I：

暂无

中图分类号：

TF [冶金工业];

学科分类号：

0806 ;

摘要：

Hydrogen absorption behavior and hydrogen embrittlement properties of 1000-1800MPa grade ultra high-strength low alloy TRIP-aided steels with bainitic ferrite matrix were investigated. The TRIP-aided steels absorbed a large amount of hydrogen compared with the conventional tempered martensitic and bainitic steels. It was expected that the absorbed hydrogen was principally trapped in interlath retained austenite films and along bainitic ferrite lath boundary. Superior hydrogen embrittlement performances such as low hydrogen embrittlement susceptibility and high delayed fracture strength were achieved in the TRIP-aided steel. This may be associated with hydrogen trapping effect and TRIP effect of retained austenite.

引用

页码：31 / 37

页数：7

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