Effect of Molybdenum Addition on Solidification Structure, Mechanical Properties and Wear Resistivity of High Chromium Cast Irons.
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概要
- 論文の詳細を見る
Mo2C was formed as a eutectic in the final stage of solidification of high Cr cast iron containing Mo. This finely dispersed carbide that is harder than Cr7C3 is expected to give good wear resistivity of hot rolls. The effect of addition of Mo up to 10 mass% in 3mass%C-20mass%Cr iron was investigated. With increasing Mo content, tensile strength and fracture toughness decreased monotonically, and hot wear resistivity increased. These effects could be explained by the amount of Mo2C. Fine particles of Mo2C provided crack initiation and growth sites to cause fracture. However they prevented the propagation of wear cracks. Eutectic carbides should be controlled within about 35 vol% considering a balance between mechanical properties and wear resistivity.
- The Iron and Steel Institute of Japanの論文
著者
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Umeda Takateru
Department Of Metallurgical Engineering Faculty Of Engineering Chulalongkorn University
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Ikeda Minoru
Department Of Materials Engineering The University Of Tokyo
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Kato Osamu
Mechanical Working Process, Process Technology Laboratories, Technical Development Bureau, Nippon Steel Corporation
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Tong Ching
Graduate School, The University of Tokyo
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Suzuki Toshio
Engineering Research Institute, Faculty of Engineering, The University of Tokyo
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Niwa Naotaka
Department of Metallurgy, Faculty of Engineering, The University of Tokyo
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Ikeda Minoru
Department of Metallurgy, Faculty of Engineering, The University of Tokyo
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