Creep property of austenitic stainless steel with lath structure formed by displacive reversion

Nobuo Nakada, Daisuke Fukae, Tomoyuki Kitaura, Toshihiro Tsuchiyma, Setsuo Takaki

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

The effectiveness of microstructure control using displacive reversion on creep property was verified in a metastable austenitic stainless steel with a chemical composition of Fe-14%Cr-11%Ni. The steel plates were cold-rolled until the austenite phase fully transforms to deformation-induce α' martensite, and then rapidly heated to 923K to reverse the martensite to austenite. By the thermomechanical treatment, fine lath austenitic structure containing high-density dislocation was formed with a mechanism of displacive reversion from deformation-induced α' martensite to austenite. The thermomechanical-treated specimen with lath structure had approximately two times longer creep fracture lifetime compared to the specimen with equiax-grained structure. This results means that the microstructure control to lath structure effectively enhances creep property of austenitic heat-resistant steel.

Original languageEnglish
Title of host publication65th ABM International Congress, 18th IFHTSE Congress and 1st TMS/ABM International Materials Congress 2010
Pages4278-4287
Number of pages10
Volume5
Publication statusPublished - 2010
Event65th ABM International Congress, 18th IFHTSE Congress and 1st TMS/ABM International Materials Congress 2010 - Rio de Janeiro, Brazil
Duration: Jul 26 2010Jul 30 2010

Other

Other65th ABM International Congress, 18th IFHTSE Congress and 1st TMS/ABM International Materials Congress 2010
CountryBrazil
CityRio de Janeiro
Period7/26/107/30/10

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Austenitic stainless steel
Martensite
Austenite
Creep
Thermomechanical treatment
Microstructure
Steel
Chemical analysis

All Science Journal Classification (ASJC) codes

  • Mechanics of Materials

Cite this

Nakada, N., Fukae, D., Kitaura, T., Tsuchiyma, T., & Takaki, S. (2010). Creep property of austenitic stainless steel with lath structure formed by displacive reversion. In 65th ABM International Congress, 18th IFHTSE Congress and 1st TMS/ABM International Materials Congress 2010 (Vol. 5, pp. 4278-4287)

Creep property of austenitic stainless steel with lath structure formed by displacive reversion. / Nakada, Nobuo; Fukae, Daisuke; Kitaura, Tomoyuki; Tsuchiyma, Toshihiro; Takaki, Setsuo.

65th ABM International Congress, 18th IFHTSE Congress and 1st TMS/ABM International Materials Congress 2010. Vol. 5 2010. p. 4278-4287.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Nakada, N, Fukae, D, Kitaura, T, Tsuchiyma, T & Takaki, S 2010, Creep property of austenitic stainless steel with lath structure formed by displacive reversion. in 65th ABM International Congress, 18th IFHTSE Congress and 1st TMS/ABM International Materials Congress 2010. vol. 5, pp. 4278-4287, 65th ABM International Congress, 18th IFHTSE Congress and 1st TMS/ABM International Materials Congress 2010, Rio de Janeiro, Brazil, 7/26/10.
Nakada N, Fukae D, Kitaura T, Tsuchiyma T, Takaki S. Creep property of austenitic stainless steel with lath structure formed by displacive reversion. In 65th ABM International Congress, 18th IFHTSE Congress and 1st TMS/ABM International Materials Congress 2010. Vol. 5. 2010. p. 4278-4287
Nakada, Nobuo ; Fukae, Daisuke ; Kitaura, Tomoyuki ; Tsuchiyma, Toshihiro ; Takaki, Setsuo. / Creep property of austenitic stainless steel with lath structure formed by displacive reversion. 65th ABM International Congress, 18th IFHTSE Congress and 1st TMS/ABM International Materials Congress 2010. Vol. 5 2010. pp. 4278-4287
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