利用真空电弧炉制备了Ni_xAlTiCrFeCoCu（x=0.5，1.0，1.5，2.0，2.5，3.0）高熵合金，研究了铸态合金的显微组织、压缩性能和耐腐蚀性能。结果表明：此高熵合金的显微组织主要由具有面心立方结构和体心立方结构的固溶体组成，有花瓣状α相、菊花状共晶组织、富铜的晶间组织和富镍相等；随着镍含量增加，花瓣状α相逐渐减少并消失（当x=2.0时），继而出现富镍相；除了NiAlTiCrFeCoCu合金外，其他5种成分合金的屈服强度都高于1.5 GPa，抗压强度约为2 GPa，压缩断口都为脆性断口；x=2.0时高熵合金在H₂SO₄溶液中的耐腐蚀性能最好；在NaCl溶液中，x=1.5，2.0，3.0时高熵合金的耐腐蚀性能均优于304不锈钢的。

所属栏目

试验研究2013年度广西高等教育教学改革工程重点资助项目（2013JGZ104）；广西自治区教育厅科研资助项目（2013YB012）；广西有色金属及特色材料加工重点实验室基金资助项目（13-A-02-03）

收稿日期

2016/1/292017/3/16

作者单位

李安敏:广西大学材料科学与工程学院, 南宁 530004
黄宇炜:广西大学材料科学与工程学院, 南宁 530004
陈若怀:广西大学材料科学与工程学院, 南宁 530004
欧阳志凤:广西玉柴动力机械有限公司, 玉林 537000
郑奇峰:广西大学材料科学与工程学院, 南宁 530004

备注

李安敏(1973-),女,广西武鸣人,副教授,博士.

引用该论文:

LI Anmin,HUANG Yuwei,CHEN Ruohuai,OUYANG Zhifeng,ZHENG Qifeng.Microstructure and Properties of Ni_xAlTiCrFeCoCu High Entropy Alloys[J].Materials for mechancial engineering,2017,41(5):53～58
李安敏,黄宇炜,陈若怀,欧阳志凤,郑奇峰.Ni_xAlTiCrFeCoCu高熵合金的显微组织与性能[J].机械工程材料,2017,41(5):53～58

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