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Proceedings Paper

Microstructure and wear resistance of laser-surface-carbonized TiC/TiAl composite coating on a gamma-TiAl intermetallic alloy
Author(s): Hua Ming Wang; L. G. Yu; X. X. Li; P. Jiang
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Paper 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.

Paper Details

Date Published: 8 September 1999
PDF: 5 pages
Proc. SPIE 3862, 1999 International Conference on Industrial Lasers, (8 September 1999); doi: 10.1117/12.361109
Show Author Affiliations
Hua Ming Wang, Beijing Univ. of Aeronautics and Astronautics (China)
L. G. Yu, Beijing Univ. of Aeronautics and Astronautics (China)
X. X. Li, Beijing Univ. of Aeronautics and Astronautics (China)
P. Jiang, Beijing Univ. of Aeronautics and Astronautics (China)


Published in SPIE Proceedings Vol. 3862:
1999 International Conference on Industrial Lasers
Fuxi Gan; Horst Weber; Zaiguang Li; Qingming Chen, Editor(s)

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