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 - Jan 1 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
CountryJapan
CityNagoya
Period5/21/165/25/16

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All Science Journal Classification (ASJC) codes

  • Materials Chemistry
  • Metals and Alloys

Cite this

Yoshimoto, K., Hara, R., Yamamoto, M., Ito, G., Kamimiyada, K., Narita, I., & Miyahara, H. (2016). Effect of boron and nitrogen addition on the solidification microstructure and hardness of high speed steel type mill roll. In 72nd World Foundry Congress, WFC 2016 (pp. 281-282). (72nd World Foundry Congress, WFC 2016). The WFO (The World Foundry Organization Ltd).