摘要
通过真空电弧熔炼制备了Al0.5FeCoCrNi高熵合金,采用轧制方法获得轧制变形量分别为30%、60%和90%的塑性变形合金,利用金相显微镜、X射线衍射分析仪、扫描电镜及附带能谱分析仪、透射电镜、硬度计和摩擦磨损试验机,研究塑性变形对合金组织结构和性能的影响。结果表明,塑性变形后合金的枝晶相被压扁拉长,枝晶间相沿轧制方向被拉长。合金的加工硬化能力强,轧制变形量分别为30%、60%和90%的合金的显微硬度分别为268.8HV,348.4HV和393.9HV,但耐磨性下降。
Al0.5FeCoCrNi high-entropy alloy ingots were prepared by vacuum arc melting, and the alloys with rolling reductions of 30%, 60%, and 90% were obtained by means of rolling. The effects of rolling reduction on microstructure and mechanical properties of the alloys were investigated by using X-ray diffraction, optical microscope, scanning electron microscope equipped with an energy dispersive spectrometer, transmission electron microscope, viekers hardness tester, and wear test machine. The results show that the dendrites are flattened and elongated, while the interdendrites are stretched along the rolling direction. The alloy show high work hardenging ability. The hardness of the samples processed by rolling deformations of 30%, 60% and 90%, were 268.8HV, 348.4HV and 393.9HV, respectively, but the wear resistance decreases with the increase in rolling deformation.
出处
《材料科学与工程学报》
CAS
CSCD
北大核心
2013年第2期258-263,共6页
Journal of Materials Science and Engineering
基金
福建省自然科学基金资助项目(2012J01202)
福建省高校产学合作重大项目(2010H6001)
国家自然科学基金资助项目(51171046)
关键词
高熵合金
塑性变形
加工硬化
磨损
high-entropy alloy
plastic deformation
work hardening
wear
