具有优良玻璃形成能力添加Al的CuZr基大块金属玻璃

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

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5mm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.

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 glass-forming composition range. When Al content changes from 4% to 8%, CuZr-based 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.