Effect of carbon on work hardening behavior of 18%Ni martensitic steel

K. Nakashima, Y. Fujimura, T. Tsuchiyama, S. Takaki

    研究成果: 書籍/レポート タイプへの寄稿会議への寄与

    7 被引用数 (Scopus)

    抄録

    The behavior of work hardening by cold rolling and tensile deformation was investigated in an ultralow carbon and carbon bearing martensitic steels, and then the effect of carbon on the work hardening behavior was discussed in terms of the change in dislocation density and the microstructure development during deformation. In the ultralow carbon 18%Ni steel (20ppmC), the hardness is almost constant irrespective of the reduction ratio. On the other hand, the carbon bearing 18%Ni steel (890ppmC) exhibits marked work hardening. The dislocation density of these specimens was confirmed to be never increased by cold rolling. It was also found that 10% cold rolling gives no significant influence on the morphology of martensite packet and block structure. TEM images of the 10% cold-rolled steels revealed that the martensite laths in the ultralow carbon steel are partially vanished, while those in the carbon bearing steel are stably remained. These results indicate that the solute carbon retards the movement of dislocations, which results in the high work hardening rate through the formation of fine dislocation substructure within laths.

    本文言語英語
    ホスト出版物のタイトルSupplement to THERMEC 2006, 5th International Conference on Processing and Manufacturing of Advanced Materials, THERMEC 2006
    出版社Trans Tech Publications Ltd
    ページ4783-4788
    ページ数6
    PART 5
    ISBN(印刷版)0878494286, 9780878494286
    DOI
    出版ステータス出版済み - 2007
    イベント5th International Conference on Processing and Manufacturing of Advanced Materials - THERMEC'2006 - Vancouver, カナダ
    継続期間: 7月 4 20067月 8 2006

    出版物シリーズ

    名前Materials Science Forum
    番号PART 5
    539-543
    ISSN(印刷版)0255-5476
    ISSN(電子版)1662-9752

    その他

    その他5th International Conference on Processing and Manufacturing of Advanced Materials - THERMEC'2006
    国/地域カナダ
    CityVancouver
    Period7/4/067/8/06

    !!!All Science Journal Classification (ASJC) codes

    • 材料科学一般
    • 凝縮系物理学
    • 材料力学
    • 機械工学

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