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材料导报  2018, Vol. 32 Issue (15): 2635-2639    https://doi.org/10.11896/j.issn.1005-023X.2018.15.014
  金属与金属基复合材料 |
Al-Cu-Fe-Cr准晶增强铝基复合材料的研究
袁野, 王一帆, 侯华, 赵宇宏, 田晋忠
中北大学材料科学与工程学院,太原 030051
Study on Al-Cu-Fe-Cr Quasicrystalline Reinforced Aluminum Matrix Composites
YUAN Ye, WANG Yifan, HOU Hua, ZHAO Yuhong, TIAN Jinzhong
School of Materials Science and Engineering, North University of China, Taiyuan 030051
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摘要 采用常规铸造法制备了四元系Al-Cu-Fe-Cr准晶,利用XRD、SEM和TEM等分析手段,分析了准晶和其类似相的微观组织以及在热处理后的相转变。以ZL101合金为基体,Al-Cu-Fe-Cr准晶颗粒为增强体,通过机械搅拌的方法制备了Al-Cu-Fe-Cr准晶/ZL101复合材料,分析复合材料的微观组织和成分,并研究其力学性能。结果表明:铸态准晶合金组织中含有Al65Cu20-Fe10Cr5相(I+d)、准晶I相、λ-Al3Fe相以及少量的η-AlCu和θ-Al2Cu相,经880 ℃×30 min热处理水淬后,λ相消失,得到了高纯度的Al65Cu20Fe10Cr5相和准晶I相;复合材料中由于准晶和基体之间的相互扩散,使得准晶相失稳发生分解;随着准晶含量的增加,复合材料的抗拉强度增加,延伸率减小,但由于Cr元素的加入使针状的β-Fe相转变成汉字状或骨骼状的α-Fe相,对复合材料的延伸率有提升作用。
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袁野
王一帆
侯华
赵宇宏
田晋忠
关键词:  Al-Cu-Fe-Cr准晶  热处理  机械搅拌法  铝基复合材料    
Abstract: The Al-Cu-Fe-Cr quasicrystalline were prepared by conventional casting method. The microstructures and the phase transition after heat treatment of quasicrystalline and other similar phases were characterisied by XRD, SEM and TEM. The alumi-nium-based composites were fabricated by using the Al-Cu-Fe-Cr quasicrystalline particles as reinforcing phase and ZL101 as matrix with mechanical stirring. The microstructures and compositions of the composites were analyzed and its mechanical properties were studied. The results show that the as-cast quasicrystalline material was composed of Al65Cu20Fe10Cr5(I+d), quasicrystalline I, λ-Al3Fe, and a small amount of η-AlCu, θ-Al2Cu phases, after heat treatment at 800 ℃ for 6 h, λ phase trend to transform into I phase. In the composite material, the diffusion between the quasicrystalline and the matrix alloy caused the decomposition of the structure of quasicrystalline phase. With the increase of quasicrystalline content, the tensile strength of the composites increased and the elongation decreased. However, the addition of the Cr element changed the acicular β-Fe phase into a Chinese character-like or bone-like α-Fe phase which increased the elongation of the composite.
Key words:  Al-Cu-Fe-Cr quasicrystalline    heat treatment    mechanical stirring    aluminium-based composite
               出版日期:  2018-08-10      发布日期:  2018-08-09
ZTFLH:  TG292  
基金资助: 国家自然科学基金(51774254;51774253;51701187;U1610123;51674226;51574207;51574206);山西省科技重大专项(MC2016-06)
通讯作者:  赵宇宏:通信作者,女,1974年生,教授,研究方向为材料成型、相变过程微观-宏观多尺度计算模拟技术 E-mail:zhaoyuhong@nuc.edu.cn   
作者简介:  袁野:男,1994年生,硕士,主要研究方向为铝基准晶材料 E-mail:651074971@qq.com
引用本文:    
袁野, 王一帆, 侯华, 赵宇宏, 田晋忠. Al-Cu-Fe-Cr准晶增强铝基复合材料的研究[J]. 材料导报, 2018, 32(15): 2635-2639.
YUAN Ye, WANG Yifan, HOU Hua, ZHAO Yuhong, TIAN Jinzhong. Study on Al-Cu-Fe-Cr Quasicrystalline Reinforced Aluminum Matrix Composites. Materials Reports, 2018, 32(15): 2635-2639.
链接本文:  
http://www.mater-rep.com/CN/10.11896/j.issn.1005-023X.2018.15.014  或          http://www.mater-rep.com/CN/Y2018/V32/I15/2635
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