Effect of boron and nitrogen addition on the solidification microstructure and hardness of high speed steel type mill roll

Kengo Yoshimoto, Ryutaro Hara, Masahiro Yamamoto, Gen Ito, Kazunori Kamimiyada, Ichihito Narita, Hirofumi Miyahara

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

    1 Citation (Scopus)

    Abstract

    Influence of boron and nitrogen addition as one of the alloying element on the formation of solidification structure and the improvement of hardness after thermal treatments was investigated for high-speed-steel alloys (Fe-2%C-5%Cr-5%Mo-5%V). The macrohardness of the quenched specimens gradually increases with increasing quenching temperature. Nitrogen addition helps to improve the hardness as carbon does. Boron addition is also contributed to the increasing of hardness. B-containing specimens maintained higher tempered-hardness than HSS and N-containing specimens quenched at the peak hardness. The specimen, which contains high volume fraction of residual austenite, shows the superior secondary hardening after the optimized tempering.

    Original languageEnglish
    Title of host publication72nd World Foundry Congress, WFC 2016
    PublisherThe WFO (The World Foundry Organization Ltd)
    Pages281-282
    Number of pages2
    ISBN (Electronic)9781510833128
    Publication statusPublished - 2016
    Event72nd World Foundry Congress, WFC 2016 - Nagoya, Japan
    Duration: May 21 2016May 25 2016

    Publication series

    Name72nd World Foundry Congress, WFC 2016

    Other

    Other72nd World Foundry Congress, WFC 2016
    Country/TerritoryJapan
    CityNagoya
    Period5/21/165/25/16

    All Science Journal Classification (ASJC) codes

    • Materials Chemistry
    • Metals and Alloys

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