試験片内の高圧水素環境による水素脆化評価方法の検証

• 緒形 俊夫

  独立行政法人物質・材料研究機構材料信頼性センター極限環境グループ

書誌事項

タイトル別名

• Evaluation of Hydrogen Embrittlement by Internal High-Pressure Hydrogen Environment in Specimen
• シケンヘンナイ ノ コウアツ スイソ カンキョウ ニ ヨル スイソ ゼイカ ヒョウカ ホウホウ ノ ケンショウ

抄録

  A simple testing method for mechanical properties of materials in high-pressure hydrogen environments has been developed. This method does not require any high-pressure vessel but the high-pressure hydrogen environment is produced inside the hole in the specimen. The specimen temperature is easily controlled by outside environment. The effects of hydrogen environment embrittlement (HEE) for SUS304 and 304L at 298, 190, and 77 K were evaluated by the ratio of reduction of area obtained in tensile tests in hydrogen to that obtained in helium. The results of the evaluation by this testing method agreed fairly well with the results by the usual method using a high pressure vessel. The hole in the specimen was machined by electric discharge, wire-cut, and honing. The influence of surface roughness on HEE was compared among these processes and the wire-cut machining was found to be enough for this new method. Changes of HEE with temperature and fracture surface by hydrogen proved the usefulness of this new simple method.<br>

収録刊行物

• 日本金属学会誌

  日本金属学会誌 72 (2), 125-131, 2008

  公益社団法人 日本金属学会

キーワード

• high-pressure hydrogen
• hydrogen environment embrittlement
• testing method
• tensile test
• austenitic stainless steels
• type 304
• type 304L

詳細情報

• CRID: 1390282681455539200
• NII論文ID: 10021149719
• NII書誌ID: AN00187860
• DOI: 10.2320/jinstmet.72.125
• ISSN: 18806880
• ISSN: 24337501
• ISSN: 00214876
• NDL書誌ID: 9371337
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I9371337
• Web Site: https://www.jstage.jst.go.jp/article/jinstmet/72/2/72_2_125/_pdf
• 本文言語コード: ja
• データソース種別:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
• 抄録ライセンスフラグ: 使用不可