唐鹏,刘裔源,黄惠毅,胡治流,赵艳君.稀有元素Er对Al-Si-Fe-Co合金组织与性能的影响[J].稀有金属材料与工程,2020,49(10):3528~3535.[Tang Peng,Liu Yiyuan,Huang Huiyi,Hu Zhiliu,Zhao Yanjun.Effect of rare element Er on microstructure and properties of Al-Si-Fe-Co alloy[J].Rare Metal Materials and Engineering,2020,49(10):3528~3535.]
稀有元素Er对Al-Si-Fe-Co合金组织与性能的影响
投稿时间:2019-10-24  修订日期:2019-12-15
中文关键词:  Al-Si-Fe-Co合金  铒元素  显微组织  细化变质  力学性能
基金项目:国家自然科学基金资助(项目号51661004),广西自然科学基金(项目号2017GXNSFAA198271),广西创新驱动项目(项目号AA17202011-1,AA18242003),广西生态型铝产业协同创新中心项目(项目号20190255) ,南宁市科学技术项目(20171102)
中文摘要:
      利用OM、SEM/EDS、XRD、拉伸及摩损等实验研究稀有元素Er对Al-Si-Fe-Co合金组织和性能的影响。研究表明,Er元素可有效细化Al-Si-Fe-Co合金的富铁第二相;当添加量为0.5wt.%时,α-Al晶粒细化,共晶硅细化效果最佳,抗拉强度160.8MPa,延伸率1.89%,相比于未添加Er的合金提高了5.3%和19.6%。但是,当过量添加Er元素时会析出针状Al3Er相,对块状富铁相变质效果弱化,并使得合金的强度和塑性降低。同时,随着合金中Er元素含量增加,合金磨损率和摩擦系数均出现了提升,当Er添加量为0.5wt.%时,其相对耐磨性能达到最佳。
Effect of rare element Er on microstructure and properties of Al-Si-Fe-Co alloy
英文关键词:Fe-rich Al-Si alloy  Er element  microstructure  refinement and modification  mechanical properties
英文摘要:
      In this paper, the addition of Er element in the alloy of Al10Si1.5Fe2.25Co was carried out to study the effect of different mass fractions of Er on the refinement and mechanical properties of the microstructure. The research shows that the cerium element can effectively refine the eutectic silicon structure in the high-iron aluminum-silicon alloy after Co metamorphism. When the addition amount of element Er is 0.5wt.%, the eutectic silicon has the best refining effect; At the same time, α-Al also obtained a certain refinement, and excessive Er will lead to the precipitation of acicular Al3Er phase, but the element Er has no obvious refinement effect on the bulk iron-rich phase. With the refinement of eutectic silicon, the plasticity of the alloy is enhanced and the tensile strength is also improved. When the Er content is 0.5%, the maximum tensile strength is 160.8 MPa and the elongation after fracture is 1.89%. The alloy was increased by 5% and 19.6% compared to the alloy without Er added, and the excess of Er resulted in a decrease in strength and ductility. At the same time, with the increase of Er content in the alloy, the wear rate and friction coefficient of the alloy increased. When Er content is 0.5wt%, the relative wear resistance of the alloy reaches the best.
作者单位E-mail
唐鹏 广西大学资源环境与材料学院 tp@gxu.edu.cn 
刘裔源 广西大学资源环境与材料学院  
黄惠毅 南南铝业股份有限公司  
胡治流 广西大学资源环境与材料学院  
赵艳君 广西大学资源环境与材料学院  
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