析出硬化型高Mnオーステナイト鋼の水素脆化挙動に及ぼすNi含有量および時効熱処理の影響

細田 孝, 小川 祐平, 髙桑 脩, 本村 達, 細井 日向, 松永 久生

研究成果: ジャーナルへの寄稿学術誌査読

抄録

The effects of Ni concentration and dispersed conditions of vanadium carbide (VC) nano-particles on the hydrogen embrittlement (HE) behavior of precipitation-hardened high-Mn austenitic steels were investigated under the presence of thermally pre-charged hydrogen. Slow strain-rate tensile tests revealed that HE susceptibility decreased with an addition of Ni. VC precipitates functioned as the trapping sites for dissolved hydrogen, though its effect on resisting the HE was trivial. Hydrogen enhanced intergranular (IG) fracture wherein its area fraction was increased with the hardening by VC as well as with the escalation of internal hydrogen concentration. The IG fracture was the primary rationale for the hydrogen-induced loss of ductility. Possible mechanisms of the IG-related HE as well as future strategy for mitigating the mechanical degradation is discussed based on the fractographic observation and post-mortem microstructural analyses.
寄稿の翻訳タイトルEffects of Ni Concentration and Aging Heat Treatment on the Hydrogen Embrittlement Behavior of Precipitation-Hardened High-Mn Austenitic Steel
本文言語日本語
ページ(範囲)156-172
ページ数17
ジャーナルTetsu-To-Hagane/Journal of the Iron and Steel Institute of Japan
108
2
DOI
出版ステータス出版済み - 2月 2022

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「析出硬化型高Mnオーステナイト鋼の水素脆化挙動に及ぼすNi含有量および時効熱処理の影響」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。

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