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材料导报  2022, Vol. 36 Issue (8): 20120230-5    https://doi.org/10.11896/cldb.20120230
  金属与金属基复合材料 |
硼铁粉含量对激光熔覆AlCoCrFeNi高熵合金涂层性能及形貌的影响
谷米1, 孙荣禄1,2, 牛伟1,2, 郝文俊1, 左润燕1
1 天津工业大学机械工程学院,天津 300387
2 天津工业大学天津市现代机电装备技术重点实验室,天津300387
Effect of Ferro-Boron Powder Addition on the Tissue Morphology and Properties of AlCoCrFeNi High-entropy Alloy by Laser Cladding
GU Mi1, SUN Ronglu1,2, NIU Wei1,2, HAO Wenjun1, ZUO Runyan1
1 School of Mechanical Engineering, Tiangong University, Tianjin 300387, China
2 Tianjin Key Laboratory of Advanced Mechatronics Equipment Technology, Tiangong University, Tianjin 300387, China
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摘要 本工作目的为研究硼铁粉含量对45钢表面激光熔覆AlCoCrFeNi高熵合金涂层组织和性能的影响。利用激光熔覆技术在45钢基材表面制备了不同含量硼铁粉的AlCoCrFeNi高熵合金涂层,对涂层表面形貌、微观组织及截面形貌进行对比分析,并测定硬度及耐磨性。结果显示:添加适量的硼铁粉能够改善AlCoCrFeNi涂层表面质量,细化组织。当添加3%~4%(质量分数,下同)硼铁粉时,涂层表面质量提高;当硼铁粉含量为5%~6%时,涂层成型质量变差,裂纹增加并出现了少量根瘤组织。适量添加硼铁粉的AlCoCrFeNi高熵合金涂层较不加硼铁粉的涂层硬度和耐磨性都有明显提高。当硼铁粉含量为4%时,涂层获得最佳的表面形貌和较优异的显微硬度和耐磨性,涂层表面质量最佳,未出现明显的根瘤和裂纹。
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谷米
孙荣禄
牛伟
郝文俊
左润燕
关键词:  硼铁粉  激光熔覆  AlCoCrFeNi  高熵合金    
Abstract: The effect of the content of ferro-boron powder on the microstructure and properties of the laser cladding AlCoCrFeNi high-entropy alloy coa-ting on the surface of 45 steel was studied in this work. AlCoCrFeNi high-entropy alloy coatings with different contents of ferro-boron powder were prepared on the surface of 45 steel substrate by laser cladding. The surface morphology, microstructure and cross-sectional morphology of the coating were compared and analyzed, and the hardness and wear resistance were measured. The results show that the addition of ferro-boron powder to the high-entropy alloy powder can significantly improve the surface quality and refine the grains in the coating. When the mass fraction of ferro-boron powder was 3%—4%, the cladding coating surface morphology was gradually improved. When the mass fraction of ferro-boron powder was 5%—6%, a small number of nodules and cracks appeared in the coating. The hardness and the wear resistance of the high-entropy alloy coating with ferro-boron powder were improved. When the addition of ferro-boron powder was 4%, AlCoCrFeNi high-entropy alloy coating with high quality was obtained which showedexcellent comprehensive performance, microhardness and wear resistance, with no obvious nodules and cracks.
Key words:  ferro-boron powder    laser cladding    AlCoCrFeNi    high-entropy alloy
出版日期:  2022-04-25      发布日期:  2022-04-27
ZTFLH:  TG174.445  
基金资助: 国家自然科学基金(51371125)
通讯作者:  rlsun@tiangong.edu.cn   
作者简介:  谷米,现为天津工业大学机械工程学院硕士研究生,在孙荣禄教授的指导下进行研究。主要研究方向为高熵合金材料表面强化和激光材料加工。
孙荣禄,天津工业大学教授,博士研究生导师,主要从事金属材料表面强化和激光材料加工方面的教学和科研工作,先后主持完成了国家自然科学基金、教育部博士点基金、天津市自然科学基金项目等多项国家和省部级以及企业委托项目,发表学术论文50余篇,其中30余篇被SCI和EI收录。
引用本文:    
谷米, 孙荣禄, 牛伟, 郝文俊, 左润燕. 硼铁粉含量对激光熔覆AlCoCrFeNi高熵合金涂层性能及形貌的影响[J]. 材料导报, 2022, 36(8): 20120230-5.
GU Mi, SUN Ronglu, NIU Wei, HAO Wenjun, ZUO Runyan. Effect of Ferro-Boron Powder Addition on the Tissue Morphology and Properties of AlCoCrFeNi High-entropy Alloy by Laser Cladding. Materials Reports, 2022, 36(8): 20120230-5.
链接本文:  
http://www.mater-rep.com/CN/10.11896/cldb.20120230  或          http://www.mater-rep.com/CN/Y2022/V36/I8/20120230
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