8 September 1999 Microstructure and wear resistance of laser-surface-carbonized TiC/TiAl composite coating on a gamma-TiAl intermetallic alloy
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Proceedings Volume 3862, 1999 International Conference on Industrial Lasers; (1999) https://doi.org/10.1117/12.361109
Event: International Symposium on Industrial Lasers, 1999, Wuhan, China
Abstract
Laser surface alloying with TiC powder pre-coatings or laser surface carbonization is utilized to modify the wear resistance of a (gamma) -TiAl intermetallic alloy Ti-48Al- 2Cr-2Nb. An `in-situ' wear resistant composite coating reinforced by rapidly solidified TiC dendrites is made on substrate of the (gamma) -TiAl intermediate alloy. Crack-free TiC/TiAl composite coatings in thickness up to 1.6 mm, can be produced by laser surface alloying with preheating and slow post-treatment cooling. The hardness and wear resistance under dry sliding wear conditions are remarkably increased after the laser surface carbonization treatment of the (gamma) -TiAl intermetallic alloy.
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Hua Ming Wang, L. G. Yu, X. X. Li, P. Jiang, "Microstructure and wear resistance of laser-surface-carbonized TiC/TiAl composite coating on a gamma-TiAl intermetallic alloy", Proc. SPIE 3862, 1999 International Conference on Industrial Lasers, (8 September 1999); doi: 10.1117/12.361109; https://doi.org/10.1117/12.361109
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