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

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

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

6 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 - 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
Countryカナダ
CityVancouver
Period7/4/067/8/06

All Science Journal Classification (ASJC) codes

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

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