A Study of the Carbides in High-Speed Steel Rolls

被引：6
|
作者：
Luan Yikun [1 ]
Song Nannan [1 ]
Kang Xiuhong [1 ]
Li Dianzhong [1 ]
机构：
[1] Chinese Acad Sci, Shenyang Natl Lab Mat Sci, Inst Met Res, Shenyang 110016, Peoples R China
来源：
THERMEC 2009, PTS 1-4 | 2010年 / 638-642卷
关键词：
carbide; high-speed steel (HSS) roll; morphology; solidification rate; refinement; FRACTURE PROPERTIES; ALLOYING ELEMENTS; MICROSTRUCTURE; BEHAVIOR; MILL;
D O I：
10.4028/www.scientific.net/MSF.638-642.3356
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Carbides in HSS roll were studied systematically. The results showed that there were two kinds of carbides in HSS roll, 1(st) and 2(nd) carbides. 1(st) eutectic carbides included the chrysanthemum-like MC mainly consisting of V and the plate-like M(2)C rich in Mo. 2(nd) carbides were complex carbides, concentrating Fe, Cr, Mo and V elements. The morphology, distribution and alloy concentration of the 1(st) eutectic carbides were studied using OM, SEM and EDS. During heat treatment, evolution of the 1(st) eutectic carbides was analyzed. It was found that the MC carbides had no change in morphology, components and distribution, while the M(2)C carbides decomposed to M(6)C and MC. In order to improve the properties of HSS, a method of increasing solidification rate was defined to refine the eutectic carbides. After refinement, the eutectic carbides distributed both along the grain boundaries and inside the grains.
引用
收藏
页码：3356 / 3361
页数：6
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