Ultra rapid softening of high strength structural steels by thermomechanical treatment

Yoshitaka Adachi, Kaneaki Tsuzaki

研究成果: Chapter in Book/Report/Conference proceedingConference contribution

抄録

This study aims to shorten the softening treatment period as possible in high strength structural steels. The steel used is SCM440 steel. As an initial microstructure, martensite, bainite, pearlite and complicated microstructure consisting of ultrafine polygonal, martensite and equiaxed cementite were extensively examined to understand their softening process on aging at 973K. These initial microstructures were prepared by heat or thermomechanical treatment. Their initial Vickers hardness (Hv(lOkgf)) were 634, 281, 219 and 238, respectively. It is noteworthy that within five minutes on aging hardness of the complicated microstructure reached lower than Hv200, while it took more than several hours for other initial microstructures. A quantitative evaluation of microstructures appears to help in understanding the mechanism of the softening kinetics.

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4807-4812
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 - 1 1 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 4 20067 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

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(全般)
  • 凝縮系物理学
  • 材料力学
  • 機械工学

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