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논문 기본 정보

자료유형
학술저널
저자정보
Zishan Yao (Wuhan University of Science and Technology) Guang Xu (Wuhan University of Science and Technology) Zhengyi Jiang (University of Wollongong) Junyu Tian (Wuhan University of Science and Technology) Qing Yuan (Wuhan University of Science and Technology) Hongwei Ma (Wuhan University of Science and Technology)
저널정보
대한금속·재료학회 Metals and Materials International Metals and Materials International Vol.25 No.5
발행연도
2019.1
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1,151 - 1,160 (10page)

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초록· 키워드

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In the present research, the effects of Nickel (Ni) and Chromium (Cr) on cryogenic impact toughness (CIT) of low-carbonbainite/martensite multiphase steels [processed by two different cooling processes: isothermal transformation process (ITP)and continuous cooling process (CCP)] were investigated. It was found that due to the formation of carbides during isothermaltreatment, the addition of Ni and Cr yielded no significant improvements in CIT. However, during CCP treatment, theaddition of Ni manifested a considerable enhancement in CIT, whereas the addition of both Ni and Cr caused a decreasein CIT. Further, after ITP treatment, the microstructure of all steels consisted of bainite and martenite, while Ni + Cr steelcontained the largest amount of bainite. The microstructures of the CCP-treated steels mainly also consisted of bainite andmartensite, but no retained austenite and carbides were observed, thus resulting in a superior CIT.

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