合金元素对Cu60Zr30Ti10合金的非晶形成能力与显微硬度的影响

中国有色金属学报, 2006, 16(7): 1155-1160.

合金元素对Cu60Zr30Ti10合金的非晶形成能力与显微硬度的影响

杨元政 ^1, , 仇在宏 ^2, , 谢致薇 ^3, , 白晓军 ^4,

1.广东工业大学,材料与能源学院,广州,510006

2.广东工业大学,材料与能源学院,广州,510006

3.广东工业大学,材料与能源学院,广州,510006

4.广东工业大学,材料与能源学院,广州,510006

基金项目: 广东省博士启动基金(20010056;4009459) 广东省科技厅科技计划(2003B12106) 国家高技术研究发展计划(863计划)(50371020)

关键词： Cu60-xZr30Ti10M2合金 , 块体非晶合金 , 非晶形成能力 , 显微硬度

Effects of alloying elements on glass forming ability and microhardness of Cu60Zr30Ti10 alloy

用铜模吸铸法制备直径2～3 mm的Cu60-xZr30Ti10M2(M=Mg、Al、Sn)系列非晶合金.用X射线衍射、差式扫描量热仪和硬度实验等研究它们的非晶形成能力、热稳定性与显微硬度.该系列非晶合金均表现出两级晶化行为.Cu60Zr30Ti10的玻璃转变温度为426.5℃,晶化起始温度为467.7℃,过冷液相区为41.2℃.添加Mg、Mo、Al对过冷液相区影响比较小,而添加Sn则使过冷液相区明显增大,达到51.6℃,合金的非晶形成能力有较明显提高,热稳定性增强.Cu60Zr30Ti10非晶合金的显微硬度为HV594.3,添加2%(摩尔分数)的Mg、Mo和Al对显微硬度影响不大,而添加2%Sn(摩尔分数)却使显微硬度达到HV755.7,提高27%.

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