Al-Bi-Ce-Cu难混溶合金的凝固组织和耐磨性
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摘要
研究了Al-Bi-Ce-Cu难混溶合金的凝固组织和耐磨性能。实验结果表明,添加Ce到Al-Bi合金中,原位生成的棒状化合物Bi2Ce作为异质形核质点,促进了Bi相的形核,所制备难混溶合金中富Bi相颗粒弥散分布。添加Cu到Al-Bi-Ce合金中生成了硬质相Al2Cu,硬质相增强了基体的硬度,进而提高了合金的耐磨性能,降低了合金的耐磨性系数。因此Al-Bi-Ce-Cu合金不仅具有富Bi相颗粒弥散分布的组织,同时还具有高的耐磨性能,有很强的实际应用价值。
The microstructure and wear resistance of Al-Bi-Ce-Cu alloys were investigated. The intermetallic compounds Bi_2Ce form and act as heterogeneous nucleation sites of Bi-rich droplets, which promote the nucleation of Bi phase and obtain a dispersed microstructure. The intermetallic compounds Al_2Cu locate in the Al-rich matrix and enhance the hardness of the matrix. The wear resistance of alloys is not only dependent on the size of Bi-rich droplets but also dependent on the hardness of the matrix. The refined microstructure and the strengthened hardness improve the wear resistance of Al-Bi alloys. Therefore, Al-Bi-Ce-Cu immiscible alloys is useful as a wear resistance material.
The microstructure and wear resistance of Al-Bi-Ce-Cu alloys were investigated. The intermetallic compounds Bi_2Ce form and act as heterogeneous nucleation sites of Bi-rich droplets, which promote the nucleation of Bi phase and obtain a dispersed microstructure. The intermetallic compounds Al_2Cu locate in the Al-rich matrix and enhance the hardness of the matrix. The wear resistance of alloys is not only dependent on the size of Bi-rich droplets but also dependent on the hardness of the matrix. The refined microstructure and the strengthened hardness improve the wear resistance of Al-Bi alloys. Therefore, Al-Bi-Ce-Cu immiscible alloys is useful as a wear resistance material.
引文
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[2]Grugel R N,Lograsso T A,Hellawell A.Metallurgical Transactions A[J],1984,15(6):1003
[3]Sun Q,Jiang H X,Zhao J Z et al.Acta Materialia[J],2017,129:321
[4]He J,Mattern N,Tan J et al.Acta Materialia[J],2013,61(6):2102
[5]Kaban I,K?hler M,Ratke L et al.Acta Materialia[J],2011,59(18):6880
[6]Fang F,Zhu M,Deng H Q et al.Materials Science and Engineering B[J],2004,108(3):253
[7]Inoue A,Yano N,Matsuzaki K et al.Journal of Materials Science[J],1987,22(1):123
[8]Zuo Xiaowei(左小伟),Wang Engang(王恩刚),Han Huan(韩欢)et al.Acta Metallurgica Sinica(金属学报)[J],2008,44(10):1219
[9]Yang Zhizeng(杨志增),Sun Qian(孙倩),Zhao Jiuzhou(赵九洲).Acta Metallurgica Sinica(金属学报)[J],2014,50(1):25
[10]Chen L Y,Xu J Q,Choi H et al.Nature Communications[J],2014,9(5):3879
[11]Sun Qian(孙倩),Jiang Hongxiang(江鸿翔),Zhao Jiuzhou(赵九洲).Acta Metallurgica Sinica(金属学报)[J],2016,52(4):497
[12]Fu M W,Li H,Lu J et al.Computational Materials Science[J],2009,46(4):1058
[13]Zhang Lin(张林),Wang Engang(王恩刚),Zuo Xiaowei(左小伟)et al.Acta Metallurgica Sinica(金属学报)[J],2008,44(2):165
[14]Sun Q,Jiang H X,Zhao J Z et al.Materials and Design[J],2016,91:361
[15]Budai I,Kaptay G.Intermetallics[J],2011,19(3):423
[16]Feng Xiaoming(冯小明),Zhang Congcai(张崇才).Composites(复合材料)[M].Chongqing:Chongqing University Press,2007:1
[17]Wang Changchun(王常川),Wang Richu(王日初),Peng Chaoqun(彭超群)et al.The Chinese Journal of Nonferrous Metals(中国有色金属学报)[J],2012,22(7):1945
[18]Man T N,Zhang L,Xu Naikang et al.Metals[J],2016,6(8):177
[19]Budai I,Kaptay G.J Mater Sci[J],2010,45(8):2090
[20]Ratke L,Diefenbach S.Materials Science Engineering R:Report[J],1995,15(7-8):263
[21]Mabuchi M,Higashi K.Acta Materialia[J],1996,44(11):4611
[22]Guo Z L,Sha W.Materials Transactions[J],2002,43(6):1273
[23]Yu Yongning(余永宁).Principles of Metallography(金属学原理)[M].Beijing:Metallurgical Industry Press,2013:797
[24]Von?ina M,Medved J,Bon?ina T et al.Trans Nonferrous Met Soc China[J],2014,24(1):36