Study on Al-Cu-Fe-Cr Quasicrystalline Reinforced Aluminum Matrix Composites

被引：0

作者：

Yuan Y. ^{[1
]}

Wang Y. ^{[1
]}

Hou H. ^{[1
]}

Zhao Y. ^{[1
]}

Tian J. ^{[1
]}

机构：

[1] School of Materials Science and Engineering, North University of China, Taiyuan

来源：

Cailiao Daobao/Materials Review | 2018年 / 32卷 / 08期

关键词：

Al-Cu-Fe-Cr quasicrystalline; Aluminium-based composite; Heat treatment; Mechanical stirring;

D O I：

10.11896/j.issn.1005-023X.2018.15.014

中图分类号：

学科分类号：

摘要：

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 Al 65 Cu 20 Fe 10 Cr 5 (I+d), quasicrystalline I, λ-Al 3 Fe, and a small amount of η-AlCu, θ-Al 2 Cu 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. © 2018, Materials Review Magazine. All right reserved.

引用

页码：2635 / 2639

页数：4

共 22 条

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