In Situ TiB2 Particles Reinforced Copper Matrix Composite Coating on Mould Steel by Laser Cladding

Abstract:

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To extend the mould cycle duration and to reduce cost, a TiB2 particulate reinforced Cu based composite coating was produced on hot-working die steel substrate using laser cladding. The experimental results showed that TiB2 particles embedded in copper based alloy were in-situ synthesized during laser processing. An excellent bonding between the coating and the substrate was obtained. The microstructure of the coating was mainly composed of -Cu dendrites and dispersed TiB2 particles. The maximum microhardness of the coating was about 800HV0.2. The wear resistance of the coating was evaluated under room temperature dry-sliding wear test condition. Due to the presence of a large amount of TiB2 particles, the composite coating exhibited excellent wear resistance compared with that of substrate.

Info:

Periodical:

Materials Science Forum (Volumes 654-656)

Main Theme:

Edited by:

Jian-Feng Nie and Allan Morton

Pages:

1856-1859

DOI:

10.4028/www.scientific.net/MSF.654-656.1856

Citation:

X. Liu and S. Yang, "In Situ TiB2 Particles Reinforced Copper Matrix Composite Coating on Mould Steel by Laser Cladding", Materials Science Forum, Vols. 654-656, pp. 1856-1859, 2010

Online since:

June 2010

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Price:

$35.00

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