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Powder Metallurgy Volume 59, 2016 - Issue 4
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Original Articles

Effect of C/Ti ratio on the compressive properties and wear properties of the 50 vol.-% submicron-sized TiCx/2014Al composites fabricated by combustion synthesis and hot press consolidation

F. QiuKey Laboratory of Automobile Materials, Ministry of Education, Department of Materials Science and Engineering, Jilin University, No. 5988 Renmin Street, 130025Changchun, China;Department of Mechanical Engineering, Oakland University, Rochester, MI 48309, US
,
Y.-Y. GaoKey Laboratory of Automobile Materials, Ministry of Education, Department of Materials Science and Engineering, Jilin University, No. 5988 Renmin Street, 130025Changchun, China
,
J.-Y. LiuKey Laboratory of Automobile Materials, Ministry of Education, Department of Materials Science and Engineering, Jilin University, No. 5988 Renmin Street, 130025Changchun, China
,
S.-L. ShuState Key Laboratory of Luminescence and Applications, Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, 130012Changchun, China
,
Q. ZouDepartment of Mechanical Engineering, Oakland University, Rochester, MI 48309, US
,
T.-Z. ZhangKey Laboratory of Automobile Materials, Ministry of Education, Department of Materials Science and Engineering, Jilin University, No. 5988 Renmin Street, 130025Changchun, China
&
Q.-C. JiangKey Laboratory of Automobile Materials, Ministry of Education, Department of Materials Science and Engineering, Jilin University, No. 5988 Renmin Street, 130025Changchun, ChinaCorrespondence[email protected]
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Pages 256-261 | Received 09 Jun 2015, Accepted 28 Mar 2016, Published online: 13 May 2016
 
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Abstract

In this study, in situ 50 vol.-% TiCx/2014Al composites with different C/Ti molar ratios (0.6, 0.7, 0.8, 0.9 and 1) were successfully produced by the method of combustion synthesis and hot press consolidation. The microstructure and the mechanical properties of the composites were investigated. Microstructure characterisation of the TiCx/2014Al composites showed relatively uniform distribution of the TiCx particles with the particle size in the range of 200–900 nm. With the increase of the C/Ti molar ratio, the yield strength (σ0.2) and the ultimate compression strength (σUCS) increased first then decreased, and the fracture strain (εf) increased. The σ0.2, σUCS and the abrasive wear resistance of the 50 vol.-% TiCx/2014Al composites reached the highest value when the value of the C/Ti molar ratio comes to 0.8. The σ0.2, σUCS and εf of the 50 vol.-% TiCx/2014Al composites with the C/Ti molar ratio of 0.8 are 1094 MPa, 1454 and 6.13%, respectively.

Acknowledgements

This work is supported by the National Natural Science Foundation of China (NNSFC, No. 51571101), National Basic Research Program of China (973 Program, No. 2012CB619600), NNSFC (No. 51171071 and No. 51501176), the ‘twelfth five-year plan’ Science & Technology Research Foundation of Education Bureau of Jilin Province, China (Grant No. 2015-479), the State Scholarship Fund of China Scholarship Council (No. 201506175140), the Innovation Experimental Training Project of Jilin University in 2015 (No. 2015430457) and the Project 985-High Properties Materials of Jilin University.

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