TiC原位增强块状Cu47Ti34Zr11Ni8非晶合金复合材料

被引:5
|
作者
孙玉峰
张国胜
魏炳忱
李维火
王育人
机构
[1] 中国科学院力学研究所国家微重力实验室 100080
[2] 北京药物化学研究所
[3] 中国科学院力学研究所国家微重力实验室
[4] 北京 102205
关键词
块状非晶合金; 剪切带; 原位反应; 复合材料;
D O I
暂无
中图分类号
TB331 [金属复合材料]; TG139.8 [];
学科分类号
0805 ; 080502 ;
摘要
在电弧炉中利用吸铸法制备了直径1-4 mm的原位生成TiC和β-Ti枝晶联合增强的块状Cu47Ti34Zr11Ni8非晶合金复合材料.DSC热分析结果表明,原位生成TiC颗粒的引入,没有影响基体合金的非晶形成能力.用OM,XRD,SEM,EDS等方法研究了复合材料的相组成、微观组织以及成分分布,结果表明,TiC颗粒作为异质形核中心促进了β-Ti枝晶的形成,形成了TiC颗粒和β-Ti枝晶联合增强的块状Cu47Ti34Zr11Ni8非晶合金复合材料,而且β-Ti枝晶的尺寸和数量与TiC颗粒的多少以及试样的尺寸有关.室温压缩试验表明,同单相非晶合金相比,块状Cu47Ti34Zr11Ni8非晶合金复合材料提高了抗压强度及塑性.
引用
收藏
页码:115 / 119
页数:5
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