摘要
通过机械合金化结合冷等静压、真空烧结工艺制备了AlxFeNiSiTi(x=0.2,0.4,0.7,1.0)系高熵合金,研究Al含量变化对高熵合金显微组织和力学性能的影响。结果表明,随着Al含量的增加,合金相成分明显变化,类Ni的FCC相逐渐向富Al的BCC2相转变,而合金硬度先减小后增大,当Al含量为1.0时达到1015 HV。合金的纳米压痕硬度随着富FeSiTi的BCC1相体积分数增加而增大。
AlxFeNiSiTi(x=0.2,0.4,0.7,1.0)high-entropy alloy was prepared by mechanical alloying combined with cold isostatic pressing and vacuum sintering.The effect of Al content change on the microstructure and mechanical properties of the high-entropy alloy was studied.The results show that with the increase of Al content,phase composition of the alloy significantly changes:Ni-like FCC phase gradually transforms into Al-rich BCC2 phase.The hardness of the alloy decreases at first and then increases with Al content increasing,reaching 1015 HV when the Al content is 1.0.The nano-indentation hardness of the alloy increases with the increase of the volume fraction of FeSiTi-rich BCC1 phase.
作者
贺毅强
苏前航
徐虎林
任昌旭
徐苏
穆昱学
刘勇
HE Yi-qiang;SU Qian-hang;XU Hu-lin;REN Chang-xu;XU Su;MU Yu-xue;LIU Yong(College of Mechanical Engineering Jiangsu Ocean University,Lianyungang 222005»China)
出处
《稀有金属与硬质合金》
CAS
CSCD
北大核心
2021年第4期71-75,共5页
Rare Metals and Cemented Carbides
基金
国家自然科学基金(51971100)
江苏省自然科学基金(2020)
江苏省“333高层次人才培养工程”科研资助项目(2020)
江苏省六大人才高峰项目(JXQC-058)
江苏海洋大学自然科学基金(Z2017001)
连云港市海燕计划项目(2018QD013)
江苏高校“青蓝工程”资助项目(2019)
。