Borkar, Tushar Sosa, John Hwang, Jun Yeon Scharf, Thomas W. Tiley, Jaimie Fraser, Hamish Banerjee, Rajarshi 2024-01-20T09:34:08Z 2024-01-20T09:34:08Z 2021-09-05 2014-06 1047-4838 https://pubs.kist.re.kr/handle/201004/126748 A new class of Ni-Ti-C-based metal-matrix composites has been developed using the laser-engineered net shaping (TM) process. These composites consist of an in situ formed and homogeneously distributed titanium carbide (TiC) phase reinforcing the nickel matrix. Additionally, by tailoring the Ti/C ratio in these composites, an additional graphitic phase can also be engineered into the microstructure. Serial-sectioning, followed by three-dimensional reconstruction of the microstructure in these composites, reveals homogeneously distributed primary and eutectic titanium carbide precipitates as well as a graphitic phase encompassing the primary carbides within the nickel matrix. The morphology and spatial distribution of these phases in three dimensions reveals that the eutectic carbides form a network linked by primary carbides or graphitic nodules at the nodes, which suggests interesting insights into the sequence of phase evolution. These three-phase Ni-TiC-C composites exhibit excellent tribological properties, in terms of an extremely low coefficient of friction while maintaining a relatively high hardness. English SPRINGER Laser-Deposited In Situ TiC-Reinforced Nickel Matrix Composites: 3D Microstructure and Tribological Properties Article 10.1007/s11837-014-0907-1 1 JOM, v.66, no.6, pp.935 - 942 JOM 66 6 935 942 scie scopus 000336727700012 2-s2.0-84904507262 Materials Science, Multidisciplinary Metallurgy & Metallurgical Engineering Mineralogy Mining & Mineral Processing Materials Science Metallurgy & Metallurgical Engineering Mineralogy Mining & Mineral Processing Article 3D printing 3D characterization Metal matrix composite Laser process Tribology