Hydrogen Embrittlement of Ultra High Strength Low Alloy TRIP-aided Steels

Tomohiko Hojo; Sung Moo Song; Koh Ichi Sugimoto; Akihiko Nagasaka; Shushi Ikeda; Hiroshi Akamizu; Masami Mayuzumi

doi:10.2355/tetsutohagane1955.90.3_177

Hydrogen Embrittlement of Ultra High Strength Low Alloy TRIP-aided Steels

Tomohiko Hojo, Sung Moo Song, Koh Ichi Sugimoto, Akihiko Nagasaka, Shushi Ikeda, Hiroshi Akamizu, Masami Mayuzumi

Materials Design Division

Research output: Contribution to journal › Article › peer-review

15 Citations (Scopus)

Abstract

The amount of charged hydrogen and its effect on ductility in three kinds of ultra high strength low alloy TRIP-aided steels with different matrix structure were investigated. These TRIP-aided steels, especially the TRIP-aided steels with bainitic ferrite matrix, were charged hydrogen more than the conventional tempered martensitic steel. This was principally associated with retained austenite trapped so much hydrogen in solute. Hydrogen embrittlement was considerably suppressed in the TRIP-aided steels, especially in the TRIP-aided steel with annealed martensite matrix. It was considered that the scanty hydrogen embrittlement of the steel was caused by trapping of much hydrogen into retained austenite, uniform fine structure, TRIP effect of retained austenite and appearance of quasi-dimple fracture.

Original language	English
Pages (from-to)	177-182
Number of pages	6
Journal	Tetsu-To-Hagane/Journal of the Iron and Steel Institute of Japan
Volume	90
Issue number	3
DOIs	https://doi.org/10.2355/tetsutohagane1955.90.3_177
Publication status	Published - 2004 Mar

Keywords

Hydrogen embrittlement
Retained austenite
TRIP-aided steel
Ultra high strength steel

ASJC Scopus subject areas

Condensed Matter Physics
Physical and Theoretical Chemistry
Metals and Alloys
Materials Chemistry

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10.2355/tetsutohagane1955.90.3_177

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Hydrogen Embrittlement of Ultra High Strength Low Alloy TRIP-aided Steels. / Hojo, Tomohiko; Song, Sung Moo; Sugimoto, Koh Ichi; Nagasaka, Akihiko; Ikeda, Shushi; Akamizu, Hiroshi; Mayuzumi, Masami.

In: Tetsu-To-Hagane/Journal of the Iron and Steel Institute of Japan, Vol. 90, No. 3, 03.2004, p. 177-182.

Research output: Contribution to journal › Article › peer-review

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abstract = "The amount of charged hydrogen and its effect on ductility in three kinds of ultra high strength low alloy TRIP-aided steels with different matrix structure were investigated. These TRIP-aided steels, especially the TRIP-aided steels with bainitic ferrite matrix, were charged hydrogen more than the conventional tempered martensitic steel. This was principally associated with retained austenite trapped so much hydrogen in solute. Hydrogen embrittlement was considerably suppressed in the TRIP-aided steels, especially in the TRIP-aided steel with annealed martensite matrix. It was considered that the scanty hydrogen embrittlement of the steel was caused by trapping of much hydrogen into retained austenite, uniform fine structure, TRIP effect of retained austenite and appearance of quasi-dimple fracture.",

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AU - Ikeda, Shushi

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AU - Mayuzumi, Masami

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AB - The amount of charged hydrogen and its effect on ductility in three kinds of ultra high strength low alloy TRIP-aided steels with different matrix structure were investigated. These TRIP-aided steels, especially the TRIP-aided steels with bainitic ferrite matrix, were charged hydrogen more than the conventional tempered martensitic steel. This was principally associated with retained austenite trapped so much hydrogen in solute. Hydrogen embrittlement was considerably suppressed in the TRIP-aided steels, especially in the TRIP-aided steel with annealed martensite matrix. It was considered that the scanty hydrogen embrittlement of the steel was caused by trapping of much hydrogen into retained austenite, uniform fine structure, TRIP effect of retained austenite and appearance of quasi-dimple fracture.

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