Microstructure and mechanical properties of in-situ TiCp/2024 composite

J Mater Sci Technol ›› 2001, Vol. 17 ›› Issue (S1): 65-68.

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Microstructure and mechanical properties of in-situ TiCp/2024 composite

Mingzhen MA, Dayong CAI, Tianfu JING

School of Materials Science and Engineering, Yanshan University, Qinhuandao 066004, China

Received:2000-09-26 Revised:2001-03-06 Online:2001-10-28 Published:2009-10-10
Contact: Mingzhen MA

Abstract

Abstract: The microstructure of TiCp/2024 composite and the structure of interface between TiCp and Al are studied using SEM and TEM. The results show that the in-situ synthesized TiC particle has face-centered cubic structure (fcc). Meanwhile, particles are characterized as tiny and nearly globular. The orientation between TiC particles and Al matrix can be described as ((2) over bar(2) over bar0)(Al)//(02 (2) over bar)(Tic) and [(1) over bar 12](Al)//[011](TiC). Results of the mechanical property tests reveal that the ultimate strength (sigma (b)) and the yield strength (sigma (s)) of the composite are improved by 30% and 47% respectively, compared with the properties of 2024 matrix. In addition, the elongation (delta) value can still reach 4.3%. Thus TiCp/2024 composite has high comprehensive performance.

Key words:

Mingzhen MA, Dayong CAI, Tianfu JING. Microstructure and mechanical properties of in-situ TiCp/2024 composite[J]. J Mater Sci Technol, 2001, 17(S1): 65-68.

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Microstructure and mechanical properties of in-situ TiCp/2024 composite

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