The Critical Cooling Rate of Fe-Based Mono-Sized Spherical Particles with Fully Glassy Phase

摘要：

　　A new method to evaluate the critical cooling rate,Rc of Fe-based metallic glass alloy was proposed and discussed.(Fe0.5Co0.5)0.75B0.2Si0.0596Nb4 alloy particles were prepared with narrow size distribution and high sphericity by Pulsated Orifice Ejection Method in Ar,He and 50%Ar+50%He mixed atmosphere,respectively.Phase transition of a particle from amorphous to amorphous-crystalline and fully crystalline occurred with the increase of particle diameter.Rc of the formation of fully amorphous phase was estimated to be in the range of 700-11 00 K/s,lower than that measured by time-temperature transformation diagram of bulk metallic alloy.No change of Rc occurred in Ar,He or 50%Ar+50%He mixed atmosphere,which proved it an effective method to evaluate the critical cooling rate of Fe-based metallic glass alloy.

关键词： Metallic glasses Mono-sized spherical particles Critical cooling rate

作者: Ying Li Wei Dong Yifan Fu Yi Tan Ayako Miura Akira Kawasaki

作者单位: School of Materials Science and Engineering,Dalian University of Technology,Dalian 116024,China School of Materials Science and Engineering,Dalian University of Technology,Dalian 116024,China;Key Department of Materials Processing,School of Engineering,Tohoku University,Aoba 02 Aramaki Aoba-ku,S

会议类型: 国际会议

会议名称: The 6th Cross-Strait Conference on Advanced Engineering Materials (第六届海峡两岸工程材料研讨会)

会议地点: 南京

会议语种:英文

页码: 185-191

在线出版日期: 2011-11-08（万方平台首次上网日期，不代表论文的发表时间）