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Proceedings Paper

Laser cladding for high-temperature self-lubricating wear-resistant composite coatings on γ-TiAl intermetallic alloy Ti-48Al-2Cr-2Nb
Author(s): X. B. Liu; C. M. Wang; L. G. Yu; Hua Ming Wang
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Paper Abstract

High-temperature self-lubricating wear-resistant metal matrix composite coatings are fabricated on substrate of a (gamma) - TiAl intermetallic alloy Ti-48Al-2Cr-2Nb by laser cladding. The hybrid (gamma) -NiCr metal matrix composite coating is mainly reinforced by rapidly solidified wear-resistant phase of hyper-eutectic M7C3 and self-lubricating particles of Ag and CaF2 or CaAgF4. Microstructure and hardness within the whole laser clad composite coating is homogeneous and the bonding to the substrate is purely metallurgical. Both hardness and dry sliding wear resistance of the (gamma) -TiAl intermetallic alloy are significantly enhanced after laser cladding treatment.

Paper Details

Date Published: 7 February 2000
PDF: 6 pages
Proc. SPIE 3888, High-Power Lasers in Manufacturing, (7 February 2000); doi: 10.1117/12.377035
Show Author Affiliations
X. B. Liu, Beijing Univ. of Aeronautics and Astronautics (China)
C. M. Wang, Beijing Univ. of Aeronautics and Astronautics (China)
L. G. Yu, Beijing Univ. of Aeronautics and Astronautics (China)
Hua Ming Wang, Beijing Univ. of Aeronautics and Astronautics (China)


Published in SPIE Proceedings Vol. 3888:
High-Power Lasers in Manufacturing
Xiangli Chen; Tomoo Fujioka; Akira Matsunawa, Editor(s)

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