Effect of Hydrogen Diffusion on Hydrogen Embrittlement of 18%Ni Maraging Steel
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- Nozue Akira
- Faculty of Science and Technology, Sophia University
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- Kuretani Etsuro
- Graduate Student, Sophia University
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- Okubo Tadatsune
- Faculty of Science and Technology, Sophia University
Bibliographic Information
- Other Title
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- 18%Niマルエージング鋼の水素脆性に及ぼす水素拡散の影響
- 18パーセント Ni マルエージング コウ ノ スイソ ゼイセイ ニ オヨボス
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Abstract
The purpose of the present study is to clarify effects of hydrogen diffusion on hydrogen embrittlement of 18%Ni maraging steel. Thin plate specimens were machined after being solution-treated under recrystallizing and unrecrystallizing conditions for austenite. An electrochemical transportation method was carried out in order to measure hydrogen diffusion coefficient D of structure-controlled specimens. The values of D decreased with prior-austenite grain size for the specimens solution-treated under recrystallizing condition for austenite. On the other hand, for the specimens solution-treated under unrecrystallizing condition for austenite, there was almost no influence of the grain sizes on the D values and besides these values were smaller than the recrystallized specimens. The above results were quite consistent with the effects of the prior-austenite grain sizes on the crack growth rate in the stage II region. Consequently it was elucidated that the hydrogen diffusion predominantly controlled the crack growth rate of the hydrogen embrittlement for the maraging steel.
Journal
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- Journal of the Japan Institute of Metals and Materials
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Journal of the Japan Institute of Metals and Materials 53 (2), 170-174, 1989
The Japan Institute of Metals and Materials
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Details 詳細情報について
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- CRID
- 1390282681461156992
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- NII Article ID
- 130007337248
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- NII Book ID
- AN00187860
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- ISSN
- 18806880
- 24337501
- 00214876
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- NDL BIB ID
- 3222583
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- Data Source
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- JaLC
- NDL
- Crossref
- CiNii Articles
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- Abstract License Flag
- Disallowed