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材料导报  2019, Vol. 33 Issue (z1): 329-331    
  金属与金属基复合材料 |
氮元素对Ti2ZrHfV0.5Mo0.2高熵合金组织及力学性能的影响
张长亮, 卢一平
大连理工大学材料科学与工程学院,辽宁省凝固控制与数字化制备技术重点实验室,大连 116024
Effect of Nitrogen Element on Microstructure and Mechanical Properties of Ti2ZrHfV0.5Mo0.2 High-entropy Alloy
ZHANG Changliang, LU Yiping
Provincial Key Laboratory of Solidification Control and Digital Preparation Technology, School of Materials Science and Engineering, Dalian University of Technology, Dalian 116024
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摘要 氮元素在传统合金中经常被用作微量添加元素来提升合金的性能。本工作研究了不同含量的氮对BCC结构的Ti2ZrHfV0.5Mo0.2高熵合金的组织结构和力学性能的影响。研究发现,高熵合金中加入微量的氮后,氮完全固溶在高熵合金中,高熵合金依然是单相固溶体结构。而随着氮含量的增加,其固溶度饱和,有氮化物相析出;同时压缩力学性能测试表明,随着氮的添加,高熵合金的硬度和压缩屈服强度都明显提高,但是塑性会降低。
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张长亮
卢一平
关键词:  氮元素  高熵合金  组织结构  力学性能    
Abstract: Nitrogen is often used as a trace additive in conventional alloys to enhance the properties of the alloy. In this work, the effects of different contents of nitrogen on the microstructure and mechanical properties of Ti2ZrHfV0.5Mo0.2 high-entropy alloy (HEA) were investigated. It is found that the nitrogen element is completely dissolved in the HEA with a single-phase solid solution structure after adding a small amount of nitrogen. With the increase of nitrogen content, the nitride phase is formed from the solid solution supersaturation. At the same time, the compression mechanical properties test shows that the hardness and compressive yield strength of the HEA obviously improve with the addition of nitrogen element, but the plasticity decreases.
Key words:  nitrogen element    high entropy alloy    microstructure    mechanical properties
               出版日期:  2019-05-25      发布日期:  2019-07-05
ZTFLH:  TG139  
基金资助: 国家自然科学基金(51671044;51822402)
作者简介:  张长亮,大连理工大学硕士研究生,主要研究方向为高熵合金,研究探索氮元素等微量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。主持国家自然科学基金面上项目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,其中第一作者及通信作者47篇,包括Acta Materialia, Nanoscale, Scientific Report, Applied Physics Letters, Journal of Applied Phy-sics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。luyiping@dlut.edu.cn
引用本文:    
张长亮, 卢一平. 氮元素对Ti2ZrHfV0.5Mo0.2高熵合金组织及力学性能的影响[J]. 材料导报, 2019, 33(z1): 329-331.
ZHANG Changliang, LU Yiping. Effect of Nitrogen Element on Microstructure and Mechanical Properties of Ti2ZrHfV0.5Mo0.2 High-entropy Alloy. Materials Reports, 2019, 33(z1): 329-331.
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http://www.mater-rep.com/CN/  或          http://www.mater-rep.com/CN/Y2019/V33/Iz1/329
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