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侯丽丽,梁霄羽,要玉宏,陈建,刘江南.B含量对FeCrCoNiMn高熵合金组织及力学性能的影响[J].稀有金属材料与工程(英文),2018,47(10):3203~3207.[Hou Lili,Liang Xiaoyu,Yao Yuhong,Chen Jian and Liu Jiangnan.Effect of Boron on the Microstructure and Mechanical Property of FeCrCoNiMn High-Entropy Alloy[J].Rare Metal Materials and Engineering,2018,47(10):3203~3207.]
Effect of Boron on the Microstructure and Mechanical Property of FeCrCoNiMn High-Entropy Alloy
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Received:September 04, 2017  Revised:September 13, 2017
DOI:
Key words: high entropy alloy  microstructure  tensile properties  hardness
Foundation item:国家自然科学基金资助(项目号51571155, 51671150,51471123),国家自然科学基金项目(面上项目,重点项目,重大项目)
Author NameAffiliation
Hou Lili,Liang Xiaoyu,Yao Yuhong,Chen Jian and Liu Jiangnan  
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Abstract:
      FeCrCoNiMnBx (x=0, 0.05, 0.1, 0.15, 0.2 where, x is the mole percentage) were prepared by vacuum arc melting.The microstructure and mechanical property of FeCrCoNiMnBx high-entropy alloys were investigated.The results show thatwithout boron addition, the alloy is composed of simple fcc solid solution structure and the cellular crystal structures form . When the content of B in the alloys was higher than 0.05, (Fe, Co) 2B with shape of dendritic and nano granular can be observed. With the increase of B content, the tensile strength of the alloy increases gradually. When the content of boron is 0.2, the tensile strength of the alloy is 610 MPa, but the elongation is only 7%. The proper amount of B element can improve the comprehensive mechanical properties of high entropy alloy.When the content of B is 0.1, the tensile strength is 550 MPa, and the elongation is 20%.proper amount of B element can improve the comprehensive mechanical properties of high entropy alloy.When the content of B is 0.1, the tensile strength is 550 MPa, and the elongation is 20%.