Factors affecting the microstructure and mechanical properties of Ti-Al3 Ti core-shell-structured particle-reinforced Al matrix composites

被引：13

作者：

Guo, Baisong ^{[1
]}

Yi, Jianhong ^{[2
]}

Ni, Song ^{[1
]}

Shen, Rujuan ^{[1
]}

Song, Min ^{[1
]}

机构：

[1] Cent S Univ, State Key Lab Powder Met, Changsha, Hunan, Peoples R China

[2] Kunming Univ Sci & Technol, Sch Mat Sci & Engn, Kunming, Peoples R China

来源：

PHILOSOPHICAL MAGAZINE | 2016年 / 96卷 / 12期

基金：

中国国家自然科学基金;

关键词：

Metal matrix composites; titanium; titanium aluminides; interfaces; core-shell structure; IN-SITU; POWDER-METALLURGY; FABRICATION; DIFFUSION; ALLOY; LAYER; AL3TI; TEMPERATURE; COMPACTION; INTERFACES;

D O I：

10.1080/14786435.2016.1157638

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

This work studied the effects of matrix powder and sintering temperature on the microstructure and mechanical properties of in situ formed Ti-Al 3 Ti core-shell-structured particle-reinforced pure Al-based composites. It has been shown that both factors have significant effects on the morphology of the reinforcements and densification behaviour of the composites. Due to the strong interfacial bonding and the limitation of the crack propagation in the intermetallic shell during deformation by soft Al matrix and Ti core, the composite fabricated using fine spherical-shaped Al powder and sintered at 570 degrees C for 5 h has the optimal combination of the overall mechanical properties. The study provides a direction for the optimum combination of high strength and ductility of the composites by adjusting the fabrication parameters.

引用

页码：1197 / 1211

页数：15

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