镁基大块非晶合金的制备与性能研究  

Synthesis and characterization of Mg-based bulk metallic glass

作　　者：李洁琼[1,2] 王鲁[2] 张海峰[1] 吕广庶[2] 胡壮麒[1] 才鸿年[2] 

机构地区：[1]北京理工大学材料科学与工程学院,北京100081 [2]中国科学院金属研究所,辽宁沈阳110015

出　　处：《哈尔滨工业大学学报》2009年第11期125-128,共4页Journal of Harbin Institute of Technology

基　　金：国家自然科学基金资助项目(50274064)

摘　　要：采用铜模浇铸的方法成功制备了最大直径为12mm的Mg65Cu20Ag5Gd10非晶合金,并对其结构、热稳定性能、非晶形成能力、压缩性能及断口形貌进行了分析.结果表明,Mg65Cu20Ag5Gd10具有较强的玻璃形成能力和良好的热稳定性能;合金的断裂强度达895MPa,弹性应变为2.35%.Bulk metallic glass of Mg65Cu20Ag5Gd10 with the maximal diameter of 12 mm was synthesized successfully by copper mould casting. Its structure,thermal stability,mechanical properties and fracture surfaces were studied. Results indicate that Mg65Cu20Ag5Gd10 exhibits high thermal stability and glass forming capability. The compressive fracture strength and elastic strain limit of the metallic glass reach about 895 MPa and 2. 35% ,respectively.

关 键 词：大块非晶合金 热稳定性能 非晶形成能力 

分 类 号：TB39[一般工业技术—材料科学与工程]