Effect of shot peening on surface mechanical properties of TiB2/Al composite

被引：0

作者：

Weizhi Luan

Chuanhai Jiang

Vincent Ji

Haowei Wang

机构：

[1] Shanghai Jiao Tong University,School of Materials Science and Engineering

[2] LEMHE/ICMMO,undefined

[3] UMR 8182,undefined

来源：

Journal of Materials Science | 2009年 / 44卷

关键词：

Residual Stress; Dislocation Density; Compressive Residual Stress; Shot Peening; Proof Stress;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

The influence of shot peening on the surface mechanical properties of the TiB2/6351Al composite has been investigated. The microstructures were determined by X-ray diffraction line profile analysis. The results showed that the increment of hardness was about 50% in the top surface layer. The matrix proof stress σ0.2 of the shot peened surface had been increased by 27% and the whole strength increment was about 21% by considering the contribution of the reinforcements. The domain size and the dislocation density in the strengthened surface were 55 nm and 3.67 × 1015 m−2, respectively. The mechanical properties improvement of the modified surface was partially due to the reinforcements but mainly due to the fine domains, high value of dislocation density induced by shot peening.

引用

页码：2454 / 2458

页数：4

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