摘要
利用铜模喷注法可以制备出直径为5 mm的Mg65Cu25Gd10的非晶合金,将Mg65Cu25Gd10的Cu用Zn部分代替后,制备出的Mg65Cu20Zn5Gd10合金的非晶形成能力(GFA)并未得到提高。在室温下,Mg65Cu25Gd10的非晶合金有很高的强度,而在玻璃转变温度附近,在温度大于403 K时,.ε=5×10-4s-1和2.5×10-4s-1两种应变速率下的流变应力小于100 MPa,塑性很好,非常适合塑性成型。
Mg65Cu25Gd10 amorphous rod with diameter of 5 mm was prepared by copper mould casting.The Cu in the bulk glass-forming alloy Mg65Cu25Gd10 was substituted partially with Zn to form Mg65Cu20Zn5Gd10 alloy,which did not cause any improvement of glass-forming ability of Mg65Cu25Gd10 alloy.It was different from that of Mg65Cu25Y10 alloy.The bulk metallic glasses of Mg65Cu25Gd10 exhibited high strength at room temperature.In the glass transition region,the flow stress was below 100 MPa when the temperature reached above 403 K and the strain rate below 5×10^-4 s^-1.
出处
《中国稀土学报》
CAS
CSCD
北大核心
2007年第5期592-596,共5页
Journal of the Chinese Society of Rare Earths
基金
国家自然科学基金面上项目(50571018)资助
2005年教育部新世纪优秀人才计划及NCET资助项目
关键词
大块非晶
镁合金
力学性能
稀土
bulk amorphous alloys
Mg alloys
mechanical properties
rare earths
