摘要
根据高熵合金的设计理念制备CuCrFeMnTiAlx(x=0,0.5,1.0,1.5)合金,研究Al含量对该合金系组织结构、硬度及摩擦磨损行为的影响。结果表明:该铸态高熵合金具有简单结构,随Al含量增加,结构由密排六方转变为面心立方;合金的组织为典型的枝晶组织,枝晶间Cu富集的现象明显;合金硬度随着Al含量的增加而升高,其中Al-1.5合金的硬度最高,可以达到7.19GPa;Al-0.5合金在摩擦过程中表面产生氧化区,降低了摩擦系数,因此Al-0.5合金的耐磨性最佳。
The CuCrFeMnTiAl x high-entropy alloys, based on the design strategy of high entropy alloys were prepared and the effect of Al content on microstructure, hardness and wear resistance was investigated. The results show that the phase composition transforms from hexagonal structure to face-centered cubic. Typical dendrite and interdendrite structures are observed in the as-cast alloys. Copper segregation to interdendrite is found by scanning electron microscope (SEM) and energy dispersive spectrometry (EDS). This alloy system possesses high hardness, especially for Al-1.5 alloy, whise hardness is high up to 7.19 GPa. Due to the appearance of oxidation region in the sliding friction process, Al-0.5 alloy has better wear resistance than the others.
出处
《稀有金属材料与工程》
SCIE
EI
CAS
CSCD
北大核心
2011年第S2期550-554,共5页
Rare Metal Materials and Engineering
关键词
高熵合金
组织结构
摩擦磨损行为
high-entropy alloys
microstructure
wear resistance
