高Cu高强Zr基块体非晶合金的制备与力学性能

Preparation and Mechanical Properties of High Strength Zr-Based Bulk Metallic Glasses Containing High Content of Cu

摘要:

利用铜模铸造的方法制备了(Zr41.2Ti13.8Ni10Be22.5)1-x/87.5Cu12.5 x(x=1.6,6,11.2)块体非晶合金及其复相组织,分析了合金的相组成,热稳定性、力学性能及断口形貌.结果表明:随着铜含量的不断增多,尽管过冷液相区(ΔTx)逐渐增大,但非晶形成能力却不断下降.当合金的铜含量提高到18.5%时,非晶合金的压缩断裂强度达到2.2 Gpa,进一步增加铜含量到23.7%,压缩强度出现下降趋势.

关键词:Zf基块体非晶合金;玻璃形成能力;压缩断裂强度;Zr-based bulk metallic glasses;glass forming ability;compressive fracture strength;高强;块体非晶合金;制备与力学性能;Content;High Strength;Containing;Bulk Metallic Glasses;Mechanical Properties;metallic glass;compressive;high;compression test;increasing;improve;mechanical property;alloy;component;eutectic;spot;contrast

Abstract:

Key words:Zr-based bulk metallic glasses; glass forming ability; compressive fracture strength