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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
chemistry
Effects of Ti and TiC ceramic powder on laser-cladded Ti-6Al-4V in situ intermetallic composite
Applied Surface Science, Volume 263, Year 2012
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Description
Titanium metal matrix composite (MMCs) was developed on titanium alloy (Ti-6Al-4V) substrate with the aim of improving the hardness and wear properties by laser cladding technique using a Rofin Sinar 4 kW Nd: YAG laser. Wear investigations were carried out with the aid of three body abrasion tester. The resultant microstructure show homogeneous distribution of TiC particles free from cracks and pores. Multiple track deposited systems with 50% overlap revealed micro-hardness increase from 357.3 HV 0.1 for the substrate reaching a peak as high as 922.2 HV 0.1 for 60%Ti + 40%TiC and the least 665.3 HV 0.1 for 80%Ti + 20%TiC MMCs. The wear resistance of the materials improved significantly, indicating a fifteen-fold wear rate reduction due to the proper distribution of ceramic particles thereby forming interstitial carbides as revealed by the X-ray diffraction spectrum. © 2012 Elsevier B.V.
Authors & Co-Authors
Ochonogor, O. F.
South Africa, Pretoria
Tshwane University of Technology
Meacock, C.
South Africa, Pretoria
The Council for Scientific and Industrial Research
Abdulwahab, Malik
South Africa, Pretoria
Tshwane University of Technology
Pityana, Sisa Lesley
South Africa, Pretoria
Tshwane University of Technology
South Africa, Pretoria
The Council for Scientific and Industrial Research
Popoola, A. P.I.
South Africa, Pretoria
Tshwane University of Technology
Statistics
Citations: 79
Authors: 5
Affiliations: 2
Identifiers
Doi:
10.1016/j.apsusc.2012.09.114
ISSN:
01694332