Possibility of auto-tempering in martensitic steels containing carbon

Setsuo Takaki, Daichi Akama, Nobuo Nakada, Toshihiro Tsuchiyama, Ryuji Uemori, Masahiro Murakami, Kengo Iwanaga, Shigeru Mizoguchi

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

Abstract

Martensitic steels containing carbon are characterized by their high tensile strength and the solid solution strengthening by super saturated carbon has been believed to be the dominant strengthening mechanisms. In this study, X-ray diffraction analysis revealed that the lattice structure of as quenched martensite is not bct but bcc independent of carbon content in the carbon concentration range below 0.5% at least. In addition, a theoretical analysis on the strengthening mechanism indicated the fact that the strength of as quenched martensite can be reasonably explained by the particle dispersion strengthening based on the particle cutting model. As a result, it was confirmed that auto-tempering cannot be avoided in conventional martensitic steels under the engineering cooling condition.

Original languageEnglish
Title of host publicationPTM 2015 - Proceedings of the International Conference on Solid-Solid Phase Transformations in Inorganic Materials 2015
EditorsLong-Qing Chen, Matthias Militzer, Gianluigi Botton, James Howe, Chadwick Sinclair, Hatem Zurob
PublisherInternational Conference on Solid-Solid Phase Transformations in Inorganic Materials 2015
Pages79-80
Number of pages2
ISBN (Electronic)9780692437360
Publication statusPublished - 2015
EventInternational Conference on Solid-Solid Phase Transformations in Inorganic Materials 2015, PTM 2015 - Whistler, Canada
Duration: Jun 28 2015Jul 3 2015

Publication series

NamePTM 2015 - Proceedings of the International Conference on Solid-Solid Phase Transformations in Inorganic Materials 2015

Other

OtherInternational Conference on Solid-Solid Phase Transformations in Inorganic Materials 2015, PTM 2015
CountryCanada
CityWhistler
Period6/28/157/3/15

All Science Journal Classification (ASJC) codes

  • Chemical Engineering(all)
  • Inorganic Chemistry
  • Materials Chemistry
  • Metals and Alloys

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