Effect of carbon on the cold-worked state and annealing behavior of Two 18wt%Cr-8wt%Ni austenitic stainless steels

• Martins Luis Fernando Maffeis

  Mangels -Steel Division

• Plaut Ronald Lesley

  Department of Materials and Metallurgical Engineering, University of São Paulo

• Padilha Angelo Fernando

  Department of Materials and Metallurgical Engineering, University of São Paulo

書誌事項

タイトル別名

• Recrystallization and Related Phenomena. Effect of Carbon on the Cold-worked State and Annealing Behavior of Two 18wt%Cr-8wt%Ni Austenitic Stainless Steels.

抄録

The influence of carbon on the work hardening, formation and reversion of deformation induced martensite and on the recrystallization of two austenitic stainless steels 18%Cr–8%Ni type were studied with the help of different microstructural analysis techniques. Two steels were selected: the first an AISI 304L with low carbon (%C=0.021) content and the second an AISI 304 with higher carbon (%C=0.065) content. Both steels were heat treated to obtain two different initial conditions: one with the carbon completely in solid solution (after a solution annealing treatment at 1100°C) and the other with practically all the carbon in the precipitated form, as (Cr, Fe)₂₃C₆ (after a precipitation treatment at 750°C). The material having higher carbon content, both in solid solution and precipitated, presented in both cases higher strain hardening, smaller tendency to form strain induced martensite and higher resistance to recrystallization. Carbon in solid solution, as compared to the precipitated condition, led to a material with a higher tendency to strain hardening, less susceptibility to martensite formation and more resistance to recrystallization. Nucleation of recrystallization preferably occurred in the vicinity of grain boundaries. Based on the results of the kinetics of recrystallization and intergranular corrosion tests it was concluded that the usually recommended annealing temperatures (1000 to 1120°C) are sometimes unnecessarily high.

収録刊行物

• ＩＳＩＪ　Ｉｎｔｅｒｎａｔｉｏｎａｌ

  ＩＳＩＪ　Ｉｎｔｅｒｎａｔｉｏｎａｌ 38 (6), 572-579, 1998

  一般社団法人 日本鉄鋼協会

キーワード

• austenitic stainless steels
• work hardening
• strain induced martensite
• recovery
• recrystallization

詳細情報

• CRID: 1390282681429588992
• NII論文ID: 10002459790
• NII書誌ID: AA10680712
• DOI: 10.2355/isijinternational.38.572
• ISSN: 13475460
• ISSN: 09151559
• Web Site: http://www.jstage.jst.go.jp/article/isijinternational1989/38/6/38_6_572/_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