Enhanced toughness in a medium-carbon low-alloy steel processed by tempforming

Yuuji Kimura, Tadanobu Inoue, Fuxing Yin, Kaneaki Tsuzaki

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

Abstract

Innovative Materials Engineering Laboratory, National Institute for Materials Science, 1-2-1 Sengen, Tsukuba, Ibaraki 305-0047, Japan The deformation of a tempered martensitic structure, namely tempforming was applied to a high purity 0.4%C-2%Si-l%Cr-l%Mo steel at 500 °C using multi-pass caliber rolling with an accumulative reduction in area of 77%. Charpy impact properties were investigated for the tempformed sample. An excellent combination of strength and toughness without the addition of a large amount of alloying elements such as Ni was demonstrated in the ultrafine fibrous grain structure that was processed by the tempforming. The yield strength of 1.84GPa and the V-notch Charpy absorbed energy of 226J at room temperature and the ductile-to-brittle temperature of less than -60 °C that we obtained in the medium-carbon low-alloy steel are the most optimal values that have been reported in low-alloy steels.

Original languageEnglish
Title of host publicationProceedings of the 17th IFHTSE Congress
PublisherThe Japan Society for Heat Treatment (JSHT)
Pages430-433
Number of pages4
Volume2
ISBN (Electronic)9780000000002
Publication statusPublished - 2008
Externally publishedYes
Event17th International Federation for Heat Treatment and Surface Engineering Congress 2008, IFHTSE 2008 - Kobe, Japan
Duration: Oct 26 2008Oct 28 2008

Other

Other17th International Federation for Heat Treatment and Surface Engineering Congress 2008, IFHTSE 2008
CountryJapan
CityKobe
Period10/26/0810/28/08

All Science Journal Classification (ASJC) codes

  • Surfaces, Coatings and Films
  • Condensed Matter Physics
  • Mechanics of Materials

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  • Cite this

    Kimura, Y., Inoue, T., Yin, F., & Tsuzaki, K. (2008). Enhanced toughness in a medium-carbon low-alloy steel processed by tempforming. In Proceedings of the 17th IFHTSE Congress (Vol. 2, pp. 430-433). The Japan Society for Heat Treatment (JSHT).