Environmental cracking characteristics of deep-drawn austenitic stainless steel cases.
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- MITANI Susumu
- NTT Technical Assistance & Support Center
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- TAKAZAWA Hisayoshi
- NTT Technical Assistance & Support Center
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- HISHIYAMA Mitsumasa
- NTT Technical Assistance & Support Center
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- NISHIHATA Mikio
- NTT
Bibliographic Information
- Other Title
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- オーステナイト系ステンレス鋼絞りきょう体の環境割れ特性
- オーステナイトケイ ステンレス コウシボリ キョウタイ ノ カンキョウ ワレ
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Abstract
Environmental cracking tests for deep-drawn austenitic stainless steel cases were carried out in standing water in a manhole and under accelerated conditions, to test for hydrogen embrittlement. The main results are as follows.<br>(1) 8.6% and 9.1% Ni austenitic stainless steel cases with a sacrificial zinc electrode became cracked after setting for several months in standing water in a manhole. The electrochemical condition was -790mV at the lowest electrode potential, and a current density of 50mA/m2.<br>(2) 8.6%, 9.1% and 10% Ni austenitic stainless steel cases became cracked under accelerated conditions, to test for hydrogen embrittlement. The electrochemical conditions were the same for those cases with a sacrificial zinc electrode in sea water. However, 12% Ni austenitic stainless steel case did not become cracked under these conditions.<br>(3) Susceptibility to hydrogen embrittlement depended on the ratio of residual stress to tensile strength, and on martensite content. Thus, the cracking probability of deep-drawn cases in this environment could be estimated.<br>(4) Stable austenitic stainless steel cases did not became cracked after more than 7 years in these manholes.
Journal
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- Journal of the Society of Materials Science, Japan
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Journal of the Society of Materials Science, Japan 39 (439), 432-437, 1990
The Society of Materials Science, Japan
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Details 詳細情報について
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- CRID
- 1390282680368044416
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- NII Article ID
- 110002297593
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- NII Book ID
- AN00096175
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- ISSN
- 18807488
- 05145163
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- NDL BIB ID
- 3661101
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- Text Lang
- ja
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- Data Source
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- JaLC
- NDL
- Crossref
- CiNii Articles
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- Abstract License Flag
- Disallowed