Effect of solidification rate on the morphology and distribution of eutectic carbides in centrifugal casting high-speed steel rolls
Effect of solidification rate on the morphology and distribution of eutectic carbides in centrifugal casting high-speed steel rolls
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DOI：
10.1016/j.jmatprotec.2009.10.017
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发表时间：
2010-02-01
影响因子：
6.3
通讯作者：
Li, Dianzhong
中科院分区：
文献类型：
--
作者：
Luan, Yikun;Song, Nannan;Li, Dianzhong
共晶碳化物的形态和分布对高速钢轧辊性能有重要影响。先前报道的制造方法没有实现共晶碳化物的有效细化和分散。为了研究凝固速度对共晶碳化物的影响，寻找细化共晶碳化物的方法。本文系统地研究了在不同的凝固速度和不同的初始温度下，用不同的铸型来控制凝固速度时碳化物的形态和分布。通过光学显微镜（OM）、扫描电镜（SEM）、X射线衍射（XRD）和X射线能谱（EDS）分析了共晶碳化物的形貌和分布。结果表明，随着SR的增加，共晶碳化物变得更细小，分布更均匀。高SR是提高高速钢轧辊耐磨性和热疲劳性能的有效途径。(C)2009爱思唯尔有限公司版权所有。
The morphology and distribution Of the eutectic carbides has an important influence on the propel-ties 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. (C) 2009 Elsevier B.V. All rights reserved.