Effect of TiB2 Content on Wear Resistance of TiB2/7055 Composite Materials

被引：0

作者：

Wang, Haijing ^{[1
]}

Li, He ^{[1
]}

Chai, Lihua ^{[1
]}

Ma, Tiejun ^{[1
]}

Jian, Ningning ^{[1
]}

Jin, Tounan ^{[1
]}

Chen, Ziyong ^{[1
]}

Shi, Guodong ^{[1
]}

机构：

[1] Beijing Univ Technol, 100 Pingleyuan, Beijing, Peoples R China

来源：

HIGH PERFORMANCE STRUCTURAL MATERIALS | 2018年

关键词：

Composite; TiB2; Hardness; Wear resistance; HIGH-CYCLE FATIGUE; BEHAVIOR; MICROSTRUCTURE;

D O I：

10.1007/978-981-13-0104-9_93

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

TiB2/7055 composites with volume fractions of 0, 5.17 and 18.23% were prepared by two step method. Firstly, the Al/TiB2 master alloy was prepared by Melt Self-propagating High-temperature Synthesis method. Then, TiB2/7055 composite was prepared by adjusting the alloy elements with using this master alloy as the matrix. Meanwhile, the effect of TiB2 particle content on hardness and wear resistance of the composites were studied. The microstructure of the composite was observed by SEM and TEM. The result showed that the average size of TiB2 reinforced particles were less than 1 mu m and the particles were dispersively distributed in the grain. With the increasing of the TiB2 particles content, the hardness and wear resistance of composites increased. When the volume fraction of TiB2 was 18.23%, the hardness of composite after T6 aging could reach to 264HB, which is 14.29% higher than 7055 alloy (T6 aging), and the wear resistance is 32.36% higher than that of the 7055 alloy.

引用

页码：891 / 898

页数：8

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