Journal
MATERIALS
Volume 11, Issue 8, Pages -Publisher
MDPI
DOI: 10.3390/ma11081284
Keywords
in-situ; bimodal-sized; combustion synthesis; TiC/Al
Categories
Funding
- National Natural Science Foundation of China [51771081, 51501176]
- Source Innovation Plan of Qingdao City, China [18-2-2-1-jch]
- Science and Technology Development Program of Jilin Province, China [20170101178JC]
- Project 985-High Properties Materials of Jilin University
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Bimodal hybrid in-situ nano-/micro-size TiC/Al composites were prepared with combustion synthesis of Al-Ti-C system and hot press consolidation. Attempt was made to obtain in-situ bimodal-size TiC particle reinforced dense Al matrix composites by using different carbon sources in the reaction process of hot pressing forming. Microstructure showed that the obtained composites exhibited reasonable bimodal-sized TiC distribution in the matrix and low porosity. With the increasing of the carbon nano tube (CNT) content from 0 to 100 wt. %, the average size of the TiC particles decreases and the compressive strength of the composite increase; while the fracture strain increases first and then decreases. The compressive properties of the bimodal-sized TiC/Al composites, especially the bimodal-sized composite synthesized by Al-Ti-C with 50 wt. CNTs as carbon source, were improved compared with the composites reinforced with single sized TiC. The strengthening mechanism of the in-situ bimodal-sized particle reinforced aluminum matrix composites was revealed.
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