Effect of solidification rate on the morphology and distribution of eutectic carbides in centrifugal casting high-speed steel rolls |
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| Authors: | Yikun Luan Nannan Song Yunlong Bai Xiuhong Kang Dianzhong Li |
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| Affiliation: | 1. State Key Laboratory of Metastable Materials Science & Technology, Yanshan University, Qinhuangdao, 066004 China;2. College of Mechanical Engineering, Yanshan University, Qinhuangdao, 066004 China;1. Department of Materials Science and Engineering, Tokyo Institute of Technology, 4259, Nagatsuta-cho, Midori-ku, Yokohama 226-8503, Japan;2. Formerly Graduate Student of Engineering, Kyushu University, Japan;3. Department of Materials Science and Engineering, Kyushu University, 744, Moto-oka, Nishi-ku, Fukuoka 819-0395, Japan;4. International Institute for Carbon-Neutral Energy Research (WPI-I2CNER), Kyushu University, 744, Moto-oka, Nishi-ku, Fukuoka 819-0395, Japan;1. Laboratory of Material Engineering and Environment, National Engineering School of Sfax, Box 1173, W3038 Sfax, Tunisia;2. Centre des matériaux Pierre Marie Fourt, Ecole des Mines de Paris, France;1. State Key Laboratory of Advanced Special Steel, School of Materials Science and Engineering, Shanghai University, Shanghai 200072, China;2. Department of Chemistry and Physics, Fayetteville State University, Fayetteville, NC 28301, USA;1. Novosibirsk State University, Novosibirsk 630090, Russia;2. V.S. Sobolev Institute of Geology and Mineralogy, SB RAS, Novosibirsk 630090, Russia;3. Siberian Synchrotron and Terahertz Radiation Centre, Institute of Nuclear Physics SB RAS, Novosibirsk 630090, Russia |
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| Abstract: | The morphology and distribution of the eutectic carbides has an important influence on the properties of high-speed steel (HSS) rolls. Manufacturing methods reported previously have not achieved effective refinement and dispersal of the eutectic carbides. In order to investigate the effect of the solidification rate (SR) on the eutectic carbides and find a way to refine them, the morphology and distribution of the carbides has been studied systematically under various solidification rates, which were controlled by using different moulds with several initial temperatures. The morphology and distribution of the eutectic carbides was assessed by optical microscopy (OM) and scanning electron microscopy (SEM), as well as by X-ray diffraction (XRD) and X-ray energy dispersive spectrum (EDS). It was found that, with the increase of SR, the eutectic carbides became finer and more uniformly dispersed. A high SR can be recommended as a good way to improve the wear resistance and thermal fatigue properties of high-speed steel rolls. |
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