Transformation-assisted hydrogen desorption during deformation in steels: Examples of α′- and ε-Martensite

Tomohiko Hojo; Motomichi Koyama; Natsuki Terao; Kaneaki Tsuzaki; Eiji Akiyama

doi:10.1016/j.ijhydene.2019.09.171

Transformation-assisted hydrogen desorption during deformation in steels: Examples of α′- and ε-Martensite

Tomohiko Hojo, Motomichi Koyama, Natsuki Terao, Kaneaki Tsuzaki, Eiji Akiyama

Strength of materials

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Abstract

Hydrogen desorption behavior associated with γ-α′ and γ-ε martensitic transformation during tensile tests is investigated in four kinds of alloys with different austenite stabilities. Remarkable deformation-induced hydrogen desorption is detected not only as a result of the γ-α′ martensitic transformation, but also because of the γ-ε martensitic transformation, and the amount of desorbed hydrogen from transformed α′ martensite is more than that of transformed ε martensite. This suggests that the solubility of hydrogen in the ε phase is higher than that in the α′ martensite but lower than that in austenite.

Original language	English
Pages (from-to)	30472-30477
Number of pages	6
Journal	International Journal of Hydrogen Energy
Volume	44
Issue number	57
DOIs	https://doi.org/10.1016/j.ijhydene.2019.09.171
Publication status	Published - Nov 15 2019

All Science Journal Classification (ASJC) codes

Renewable Energy, Sustainability and the Environment
Fuel Technology
Condensed Matter Physics
Energy Engineering and Power Technology

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10.1016/j.ijhydene.2019.09.171

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abstract = "Hydrogen desorption behavior associated with γ-α′ and γ-ε martensitic transformation during tensile tests is investigated in four kinds of alloys with different austenite stabilities. Remarkable deformation-induced hydrogen desorption is detected not only as a result of the γ-α′ martensitic transformation, but also because of the γ-ε martensitic transformation, and the amount of desorbed hydrogen from transformed α′ martensite is more than that of transformed ε martensite. This suggests that the solubility of hydrogen in the ε phase is higher than that in the α′ martensite but lower than that in austenite.",

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AU - Hojo, Tomohiko

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AU - Terao, Natsuki

AU - Tsuzaki, Kaneaki

AU - Akiyama, Eiji

PY - 2019/11/15

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AB - Hydrogen desorption behavior associated with γ-α′ and γ-ε martensitic transformation during tensile tests is investigated in four kinds of alloys with different austenite stabilities. Remarkable deformation-induced hydrogen desorption is detected not only as a result of the γ-α′ martensitic transformation, but also because of the γ-ε martensitic transformation, and the amount of desorbed hydrogen from transformed α′ martensite is more than that of transformed ε martensite. This suggests that the solubility of hydrogen in the ε phase is higher than that in the α′ martensite but lower than that in austenite.

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Transformation-assisted hydrogen desorption during deformation in steels: Examples of α′- and ε-Martensite

Abstract

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