Increasing Solidification Rate of M2 High-Speed Steel Ingot by Fusible Metal Mold  

作　　者：Yan-Liang Ji Wei Zhang Xiao-Yang Chen Jian-Guo Li 

机构地区：[1]School of Materials Science and Engineering, Shanghai Jiao Tong University

出　　处：《Acta Metallurgica Sinica(English Letters)》2016年第4期382-387,共6页金属学报（英文版）

基　　金：financially supported by National Basic Research Program of China(No.2011CB12900);National Natural Science Foundation of China(No.51204106)

摘　　要：As one of the most popular used high-speed steels, M2 possesses excellent hardness and toughness as cutting tools. Networks of eutectic carbides distributing in the inter-dendritic region are academically considered to be the typical microstructure of M2, which can be refined by increasing cooling rate. In this paper, a novel casting method named fusible metal mold （FMM） is employed to refine the microstructure of M2 high-speed steel. Results show that FMM casting method can improve cooling rate by 100% without any contamination of the melts＇ composition.As one of the most popular used high-speed steels, M2 possesses excellent hardness and toughness as cutting tools. Networks of eutectic carbides distributing in the inter-dendritic region are academically considered to be the typical microstructure of M2, which can be refined by increasing cooling rate. In this paper, a novel casting method named fusible metal mold （FMM） is employed to refine the microstructure of M2 high-speed steel. Results show that FMM casting method can improve cooling rate by 100% without any contamination of the melts＇ composition.

关 键 词：CARBIDE Cooling rate Solidification process Microstructure Dendritic spacing 

分 类 号：TG24[金属学及工艺—铸造] TG142.45[一般工业技术—材料科学与工程]