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材料导报  2020, Vol. 34 Issue (8): 8096-8099    https://doi.org/10.11896/cldb.19030024
  金属及金属基复合材料 |
Mo含量对Al0.1CoCrCu0.5FeNiMox高熵合金的组织结构、力学性能及耐蚀性能的影响
陶继闯, 卢一平
大连理工大学材料科学与工程学院,凝固控制与数字化制备技术辽宁省重点实验室,大连 116024
Effect of Mo Content on Microstructure, Mechanical Properties and Corrosion Resistance of Al0.1CoCrCu0.5FeNiMox High-entropy Alloys
TAO Jichuang, LU Yiping
Key Laboratory of Solidification Control and Digital Preparation Technology (Liaoning Province), School of Materials Science and Engineering, Dalian University of Technology, Dalian 116024, China
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摘要 在不锈钢中加入Mo元素,可以使不锈钢的钝化膜稳定,提高其耐蚀性。本研究通过XRD、EPMA、硬度测试、压缩测试和动电位极化测试等分析测试方法,系统研究了Mo元素含量对Al0.1CoCrCu0.5FeNiMox高熵合金的显微组织结构、力学性能及耐蚀性能的影响。实验结果表明,该合金为树枝晶结构,由FCC相和FCC结构的富Cu相及σ相组成。该合金的硬度与屈服强度随着Mo元素含量的增加而增大。随着Mo元素含量增加,腐蚀电位先升高后降低,腐蚀电流密度降低,其耐均匀腐蚀性能明显提高,钝化区间显著增大,表现出对氯离子较好的抗性。
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陶继闯
卢一平
关键词:  高熵合金  力学性能  极化曲线  钝化    
Abstract: The addition of molybdenum in stainless steel stabilizes the passivation film of stainless steel and improves its corrosion resistance. The effects of Mo content on the microstructure, mechanical properties and corrosion resistance of Al0.1CoCrCu0.5FeNiMox high-entropy alloys have been investigated by XRD, EPMA, hardness test, compression test and potentiodynamic polarization test. The results show that the alloys have a dendritic structure, and are composed of the FCC phase and the FCC-structured Cu-rich phase and the σ phase. The hardness and yield strength of the alloys increase as the content of Mo element increases. Besides, with the increase of Mo content, the corrosion potential first increases and then decreases, the corrosion current density decreases, its resistance to general corrosion is improved and the passive area increases significantly, showing better resistance to Cl-.
Key words:  high-entropy alloy    mechanical property    polarization curve    passivation
                    发布日期:  2020-04-25
ZTFLH:  TG14  
基金资助: 国家自然科学基金(51822402;51671044);中央高校基础研究基金(DUT16ZD206);大连市青年科技之星(2016RQ005)
通讯作者:  luyiping@dlut.edu.cn   
作者简介:  陶继闯,大连理工大学硕士研究生,主要研究方向为高熵合金,研究Mo元素对高熵合金组织性能的影响。
卢一平,大连理工大学教授、博士研究生导师,主持国家自然基金面上项目2项,青年基金项目1项,中国博士后科学基金一等资助和特别资助各1项,参与国家自然科学基金联合基金重点项目等。发表SCI论文71篇,第一作者及通信作者47篇,包括Acta Materialia、Nanoscale、Scientific Report、Applied Physics Letters、Journal of Applied Physics等国际知名期刊,上述成果被52家研究机构SCI他引471次,第一作者Acta Materlia高被引论文一篇,授权发明专利6项。获2015年度教育部技术发明一等奖、2015年度国家技术发明二等奖。获第44届日内瓦国际发明展金奖,中国国际工业博览会奖(特等级)。国际会议邀请报告4次,国内邀请报告6次,分会主席1次。兼任中国材料研究学会凝固科学与技术分会理事及副秘书长、中国材料研究学会青年工作委员会理事等。
引用本文:    
陶继闯, 卢一平. Mo含量对Al0.1CoCrCu0.5FeNiMox高熵合金的组织结构、力学性能及耐蚀性能的影响[J]. 材料导报, 2020, 34(8): 8096-8099.
TAO Jichuang, LU Yiping. Effect of Mo Content on Microstructure, Mechanical Properties and Corrosion Resistance of Al0.1CoCrCu0.5FeNiMox High-entropy Alloys. Materials Reports, 2020, 34(8): 8096-8099.
链接本文:  
http://www.mater-rep.com/CN/10.11896/cldb.19030024  或          http://www.mater-rep.com/CN/Y2020/V34/I8/8096
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