Influence of Heat Treatment Conditions on Mechanical Properties of Hydrogenated Type 304 Stainless Steel at Low Temperatures

• Kuribayashi Munetaka

  Research Institute, Ishikawajima-Harima Heavy Industries Co., Ltd.

• Okabayashi Hisaki

  Research Institute, Ishikawajima-Harima Heavy Industries Co., Ltd.

抄録

The influence of hydrogen on the mechanical properties of Type 304 stainless steel at low temperatures was studied using specimens solution-annealed at 1373 K (1100°C) for 1.8 ks (30 min), in part sensitized at 1073 K (800°C) for 1.8 ks (30 min) and/or hydrogenated by cathodic charging at 323 K (50°C) in 0.5N sulfuric acid solution.<BR>Principal results obtained are as follows:<BR>(1) When tested at 77 K (−196°C), the sensitized and hydrogenated specimens exhibited singular low-temperature hydrogen embrittlement (LTHE).<BR>(2) Non-sensitized specimens hydrogenated and tested under the same conditions showed no such singular embrittlement.<BR>(3) Fracture surfaces of specimens that had exhibited singular LTHE behavior revealed an almost wholly intergranular fracture pattern.<BR>(4) Hydrogenated specimens exhibited partial recovery of ductility upon dehydrogenation treatment at 1073 K (800°C) or lower temperature.<BR>(5) The activation energy governing the recovery process was 51 kJ/mol.

収録刊行物

• Transactions of the Japan Institute of Metals

  Transactions of the Japan Institute of Metals 25 (9), 628-638, 1984

  社団法人 日本金属学会

キーワード

• stainless steel
• hydrogen embrittlement
• heat treatment
• low temperature
• mechanical properties
• intergranular fracture
• environmental embrittlement

詳細情報

• CRID: 1390001205119016448
• NII論文ID: 130003486171
• DOI: 10.2320/matertrans1960.25.628
• ISSN: 24324701
• ISSN: 00214434
• Web Site: https://www.jstage.jst.go.jp/article/matertrans1960/25/9/25_9_628/_pdf
• 本文言語コード: en
• データソース種別:
  • JaLC
  • Crossref
  • CiNii Articles
• 抄録ライセンスフラグ: 使用不可