Effect of RE-Mg Complex Modifier on Structure and Performance of High Speed Steel Roll

摘要：

The effects of rare earth (RE) and magnesium complex modifier on the structures and performance of high speed steel (HSS) roll were investigated and the mechanism of modification was analyzed by means of optical microscope(OM), scanning electron microscopy (SEM), energy dispersive X-ray spectrometry (EDS), X-ray diffraction (XRD)analysis, tensile testing machine and impact tester. The results showed that RE-Mg complex modifier could refine the grain, change carbide morphology and distribution, and increase mechanical properties. After heat treatment at 1000 ℃,many networked carbides in HSS roll were broken and a number of granular carbides appeared. Most of eutectic carbides were spheroidized and distributed uniformly. The networked carbides disappeared completely after heated to 1050 ℃. The reason that RE-Mg improves the microstructure of HSS roll was analyzed.

关键词： high speed steel roll RE complex modifier eutectic carbide toughness rare earths

作者: Duan Jiangtao Jiang Zhiqiang Fu Hanguang

作者单位: School of Electro-Mechanical Engineering, Xidian University, Xian 710071, China Department of Industrial Engineering, Zhengzhou Institute of Aeronautics, Zhengzhou 450015, China

会议类型: 国际会议

会议名称: 2006稀土玻璃陶瓷国际学术年会

会议地点: 海口

会议语种:英文

页码: 259-263

在线出版日期: 2006-11-13（万方平台首次上网日期，不代表论文的发表时间）