具有优良玻璃形成能力添加Al的CuZr基大块金属玻璃

在CuZr二元大块金属玻璃的基础上，利用铜模吸铸方法制备出了添加Al组元的CuZr 基大块 金属玻璃.CuZr基大块金属玻璃在很宽的成分范围内有很强的玻璃形成能力，在Al含量从4％ 到8％之间，CuZr基大块金属玻璃都可以做出直径至少5 mm的非晶样品.通过实验分析，解释 了CuZr基大块金属玻璃具有良好玻璃形成能力的物理机理.CuZr基金属玻璃组分简单、成本 低廉，有潜在的应用价值；同时，制备CuZr基金属玻璃的方法为开发新的大块金属玻璃体系 提供了一条切实有效的途经. 关键词： 大块金属玻璃 玻璃形成能力 CuZr基金属玻璃

CuZr-based bulk metallic glasses with good glass-forming ability prepared by Al addition

Based on the fabrication of CuZr binary bulk metallic glass(BMG), we have produced a series of CuZr-based BMGs prepared by Al addition using a copper mold casting method. CuZr-based BMGs with good glass-forming ability (GFA) have a broad g lass-forming composition range. When Al content changes from 4% to 8%, CuZr-bas ed BMGs can be produced in cylindrical rods with a diameter of at least 5mm. The physical reason of the good GFA in the alloys is analyzed. CuZr-based BMGs have a simple structure and are lower cost, so it is very possible to have potential application. At the same time, the way that we explored the CuZr-based BMGs is an effective route for designing and obtaining new multicomponent BMGs.