熔体保温温度对W_f/Zr基金属玻璃复合材料室温力学性能的影响  

INFLUENCE OF MELT HOLDING TEMPERATURES ON MECHANICAL PROPERTIES AT ROOM TEMPERATURE OF W_f/Zr-BASED METALLIC GLASS COMPOSITES

作　　者：高度[1] 陈光[1] 范沧[1] 

机构地区：[1]南京理工大学材料评价与设计教育部工程研究中心,南京210094

出　　处：《金属学报》2013年第11期1481-1486,共6页Acta Metallurgica Sinica

基　　金：国家自然科学基金项目50971057和51371099资助~~

摘　　要：系统研究了熔体保温温度对渗流铸造快淬法制备的W_f/zr基金属玻璃复合材料的影响.室温力学性能测试结果表明,W_f/Zr基金属玻璃复合材料在制备过程中存在一个最佳熔体保温温度.偏离该保温温度,复合材料的室温压缩塑性发生恶化.光学显微组织和能谱分析结果表明其原因在于,在不同的熔体保温温度,基体内产生不同数量的各种析出相.在最佳熔体保温温度810℃下,制备出了室温压缩塑性达到19.6%的、W_f体积分数为75%的复合材料.The effect of the molten temperatures on the preparation of the Wf/Zr-based metal- lic glass composites by infiltration casting rapid quenching technique was well studied. The results of the mechanical properties at ambient temperature indicate that the composite has an optimum melt holding temperature in the preparation process. Lower or higher than the optimum tempera- ture, the compressive plasticity of the composite deteriorated. The optical microstructure and EDS analyses indicate that the reason for the deterioration of the compressive plasticity was the resulted microstructures, which contains different precipitates with different molten temperatures. At the op- timum preparation condition, a Wf/Zr-based metallic glass composite with 75% volume fraction of tungsten fiber was successfully produced with significantly improved compressive plasticity of 19.6%.

关 键 词：金属玻璃复合材料 W纤维 析出相 保温温度 压缩塑性 

分 类 号：TG139[一般工业技术—材料科学与工程]