非难熔钨合金的微观组织及力学性能  

Microstructure and Mechanical Properties of Non-Refractory Tungsten Alloy

作　　者：于波[1] 刘世昌[1] 邱克强[2] 任英磊[2] 赵芳欣[1] 王勇[1] 苗治全[1] 王景成[1] 严建强[1] 

机构地区：[1]沈阳铸造研究所,辽宁沈阳110022 [2]沈阳工业大学材料科学与工程学院,辽宁沈阳110178

出　　处：《铸造》2009年第6期539-542,共4页Foundry

基　　金：国家自然科学基金资助项目(50575149)

摘　　要：通过成分设计,制备出了一种非难熔的钨合金,为普通熔炼设备熔炼及成形钨合金奠定基础。通过对合金微观组织的分析,查明了合金获得较低熔点的原因:钨合金中加入一定含量的碳后,形成低熔点Fe和Fe3C共晶相,并且钨合金中没有单质的难熔金属钨相存在,从而使钨合金的熔点处于非难熔水平。通过压缩试验表明,Er可以同时提高非难熔可铸造的钨合金的强度和塑性。采用普通熔炼设备制备钨合金有望成为一种新的钨合金制备方法。The non-refractory tungsten alloys have been widely applied in aerospace and military fields. Because of its high melting point, tungsten alloys are mainly made by powder metallurgy. In this study, a kind of non-refractory tungsten alloy which can be melted by conventional casting equipment was designed and the reason causes the decrease of melting point was investigated. Microstructure analysis shows that Fe-Fe3C eutectic phase can be obtained without forming any tungsten phase by adding alloying elements of carbon. Adding Er to the alloy can enhance both the strength and plasticity. Induction melting will be a new process to prepare tungsten alloy.

关 键 词：钨合金 非难熔合金 微观组织 力学性能 

分 类 号：TG146.411[一般工业技术—材料科学与工程]