标题:
FeCoNiCuMo高熵合金的组织与性能The Microstructure and Mechanical Properties of
FeCoNiCuMo High-Entropy Alloys
作者:
栾军
关键字:
高熵合金, 微观组织结构, 力学性能High-Entropy Alloy; Microstructure; Mechanical Properties
期刊名称:
《Material Sciences》, Vol.3 No.2, 2013-03-29
摘要:
采用电弧熔炼和真空吸铸的方法得到FeCoNiCuxMo和FeCoNiCuMox (x表示摩尔比例，取值x = 0.2，0.5，0.8，1)合金。采用X射线衍射仪、扫描电子显微镜、显微硬度仪和万能材料实验机等对上述合金系列的微观组织结构以及力学性能进行了研究。结果表明FeCoNiCuxAl和FeCoNiCuMox高熵合金体系容易形成简单FCC结构和BCC结构的固溶体，它们的显微组织是两种简单结构的混合体，表现为先共晶和共晶相的混合。合金的力学性能与Cu或Mo含量有一定的关联。FeCoNiCuxMo and FeCoNiCuMox (x values in molar ratio, x = 0.2, 0.5, 0.8, 1) high-entropy alloy system were synthesized using a arc melting method. The microstructures and mechanical properties of the alloys were investigated with X-ray diffraction, scanning electron microscopy (SEM), Vichers hardness testing and universal material testing machine. The both alloys exhibit quite simple FCC and BCC solid solution phases, the microstructures of the alloys are mixing phases of BCC and FCC, which exhibit as pre-eutectic and eutectic phases. The mechanical properties of both alloys are related to the amount of Cu or Mo elements.