Microstructure and mechanical properties of TiC/Al(7075) composites fabricated by in situ reaction

被引：0

作者：

Wu R. ^{[1
]}

Li Q. ^{[1
]}

Guo L. ^{[1
]}

Ma Y. ^{[1
]}

Wang R. ^{[1
]}

机构：

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

来源：

Fuhe Cailiao Xuebao/Acta Materiae Compositae Sinica | 2017年 / 34卷 / 06期

关键词：

7075; alloy; Composite; Hardness; In situ synthesis; TiC particles; Toughness;

D O I：

10.13801/j.cnki.fhclxb.20161110.001

中图分类号：

学科分类号：

摘要：

TiC/Al(7075) composites were fabricated by in situ reaction. The influence of in situ TiC particles form, distribution state and content on the microstructure and mechanical properties of the TiC/Al(7075) compo-sites were discussed. The results show that most spherical in situ TiC particles with aggregate exists in 7075 matrix, the cluster of grain size is about 1 μm. When the mass fraction of in situ TiC particles is less than 6%, the TiC distribution is more uniform. With the increase of in situ TiC particles, the grain sizes of the TiC/Al(7075) composites decrease significantly. But the porosity appear in the microstrcuture when the mass fraction of in situ TiC particles is more than 6%. Hardness and toughness of composite material testing shows that with the increase of the TiC particle concentration, the highest hardness of the surface reaches HB 108, the composites with 6% TiC have the best toughness, the toughness increases by 31.55% compared with the 7075 matrix. © 2017, Chinese Society for Composite Materials. All right reserved.

引用

页码：1334 / 1339

页数：5

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