Effects of static and dynamic strain aging on hydrogen embrittlement in twip steels containing al

Motomichi Koyama; Eiji Akiyama; Kaneaki Tsuzaki

doi:10.2355/isijinternational.53.1268

Effects of static and dynamic strain aging on hydrogen embrittlement in twip steels containing al

Motomichi Koyama, Eiji Akiyama, Kaneaki Tsuzaki

IMR - Materials Design Division

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

26 Citations (Scopus)

Abstract

Al effects on strain aging and resistance against hydrogen embrittlement were examined in Fe-18Mn- 0.6C-based twinning-induced plasticity steels deformed at different strain rates. These steels showed a hydrogen-induced fracture when they were pre-deformed at a strain rate of 1.7×10^-6 s ^-1. This fracture was suppressed by increasing the strain rate and Al content. The two important factors for improving the resistance to hydrogen embrittlement from the viewpoint of material strengthening by strain aging were found to be (1) the suppression of dynamic strain aging by increasing the strain rate and Al content, and (2) the suppression of static strain aging under loading by the Al addition.

Original language	English
Pages (from-to)	1268-1274
Number of pages	7
Journal	ISIJ International
Volume	53
Issue number	7
DOIs	https://doi.org/10.2355/isijinternational.53.1268
Publication status	Published - 2013

Keywords

High strength steel
Hydrogen embrittlement
Strain aging
Tensile test
Twinning-induced plasticity

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10.2355/isijinternational.53.1268

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title = "Effects of static and dynamic strain aging on hydrogen embrittlement in twip steels containing al",

abstract = "Al effects on strain aging and resistance against hydrogen embrittlement were examined in Fe-18Mn- 0.6C-based twinning-induced plasticity steels deformed at different strain rates. These steels showed a hydrogen-induced fracture when they were pre-deformed at a strain rate of 1.7×10-6 s -1. This fracture was suppressed by increasing the strain rate and Al content. The two important factors for improving the resistance to hydrogen embrittlement from the viewpoint of material strengthening by strain aging were found to be (1) the suppression of dynamic strain aging by increasing the strain rate and Al content, and (2) the suppression of static strain aging under loading by the Al addition.",

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author = "Motomichi Koyama and Eiji Akiyama and Kaneaki Tsuzaki",

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T1 - Effects of static and dynamic strain aging on hydrogen embrittlement in twip steels containing al

AU - Koyama, Motomichi

AU - Akiyama, Eiji

AU - Tsuzaki, Kaneaki

PY - 2013

Y1 - 2013

N2 - Al effects on strain aging and resistance against hydrogen embrittlement were examined in Fe-18Mn- 0.6C-based twinning-induced plasticity steels deformed at different strain rates. These steels showed a hydrogen-induced fracture when they were pre-deformed at a strain rate of 1.7×10-6 s -1. This fracture was suppressed by increasing the strain rate and Al content. The two important factors for improving the resistance to hydrogen embrittlement from the viewpoint of material strengthening by strain aging were found to be (1) the suppression of dynamic strain aging by increasing the strain rate and Al content, and (2) the suppression of static strain aging under loading by the Al addition.

AB - Al effects on strain aging and resistance against hydrogen embrittlement were examined in Fe-18Mn- 0.6C-based twinning-induced plasticity steels deformed at different strain rates. These steels showed a hydrogen-induced fracture when they were pre-deformed at a strain rate of 1.7×10-6 s -1. This fracture was suppressed by increasing the strain rate and Al content. The two important factors for improving the resistance to hydrogen embrittlement from the viewpoint of material strengthening by strain aging were found to be (1) the suppression of dynamic strain aging by increasing the strain rate and Al content, and (2) the suppression of static strain aging under loading by the Al addition.

KW - High strength steel

KW - Hydrogen embrittlement

KW - Strain aging

KW - Tensile test

KW - Twinning-induced plasticity

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Effects of static and dynamic strain aging on hydrogen embrittlement in twip steels containing al

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Keywords

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