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论文类型： 期刊论文

发表时间： 2015-07-15

发表刊物： JOURNAL OF ALLOYS AND COMPOUNDS

收录刊物： SCIE、EI、Scopus

卷号： 637

页面范围： 456-460

ISSN号： 0925-8388

关键字： In situ; TiC/Ti6Al4V composites; Casting; Carbon nanotubes

摘要： In this study, multi-walled carbon nanotubes (MWCNTs) were added as carbon sources to fabricate in situ casting TiC/Ti6Al4V (TC4) composites. The effects of MWCNTs on the microstructure and mechanical properties are studied. The composites are analyzed by X-ray diffraction, field-emission scanning electron microscope and electron probe microanalysis. The fracture behavior of TiC/TC4 composites are also studied. Smaller size of TiC particles and grain compared with TC4-graphite composites can be observed. The tensile strength of TC4-MWCNTs composites is about 1110.1 MPa, which is higher than that of TC4-graphite composites, about 1003.6 MPa. Fracture behavior also was changed by adding MWCNTs in situ casting TiC/TC4 composites. (C) 2015 Elsevier B.V. All rights reserved.