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

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

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

    7 Citations (Scopus)

    Abstract

    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.

    Original languageEnglish
    Title of host publicationSupplement to THERMEC 2006, 5th International Conference on Processing and Manufacturing of Advanced Materials, THERMEC 2006
    PublisherTrans Tech Publications Ltd
    Pages4783-4788
    Number of pages6
    EditionPART 5
    ISBN (Print)0878494286, 9780878494286
    DOIs
    Publication statusPublished - Jan 1 2007
    Event5th International Conference on Processing and Manufacturing of Advanced Materials - THERMEC'2006 - Vancouver, Canada
    Duration: Jul 4 2006Jul 8 2006

    Publication series

    NameMaterials Science Forum
    NumberPART 5
    Volume539-543
    ISSN (Print)0255-5476

    Other

    Other5th International Conference on Processing and Manufacturing of Advanced Materials - THERMEC'2006
    Country/TerritoryCanada
    CityVancouver
    Period7/4/067/8/06

    All Science Journal Classification (ASJC) codes

    • Materials Science(all)
    • Condensed Matter Physics
    • Mechanics of Materials
    • Mechanical Engineering

    Fingerprint

    Dive into the research topics of 'Effect of carbon on work hardening behavior of 18%Ni martensitic steel'. Together they form a unique fingerprint.

    Cite this