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Preparation and Mechanical Property of Mischmetal-based Bulk Metallic Glass
Author(s): 
Pages: 322-325,350
Year: Issue:  5
Journal: JOURNAL OF LIAONING INSTITUTE OF TECHNOLOGY(NATURAL SCIENCE EDITION)

Keyword:  大块非晶合金混合稀土形成能力热稳定性力学性能;
Abstract: 用铜模铸造法成功制备出直径为3 mm以混合稀土金属Mm(Mischmetal)为基的成本较低的Mm55Al25Ni10Cu5Co5大块非晶合金.利用XRD和DSC等手段对该合金的形成能力及热稳定性进行了分析.结果表明,该合金具有很好的非晶形成能力及热稳定性(明显的玻璃转变温度Tg、宽的过冷液相区ΔTx(=Tx -Tg)>60 K及高的约化玻璃转变温度Trg(= Tg/ Tm)>0.67).同时,该合金的压缩断裂强度(σf)为676 MPa,比La55 Al25Ni10Cu5Co5大块非晶提高94 MPa.
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