Paper Title:

Application of Laser Metal Deposition for Fabrication of Titanium Matrix Wear-Resistant Coating and its Wearing Performance

Periodical Applied Mechanics and Materials (Volumes 44 - 47)
Main Theme Frontiers of Manufacturing and Design Science
Edited by Ran Chen
Pages 316-320
DOI 10.4028/www.scientific.net/AMM.44-47.316
Citation Lan Yun Qin et al., 2010, Applied Mechanics and Materials, 44-47, 316
Online since December, 2010
Authors Lan Yun Qin, Guang Yang, Wei Wang, Ming Tong, Xing Liang Wang
Keywords Functionally Graded Material (FGM), In Situ Synthesis, Laser Metal Deposition (LMD), TiC, Wear Resistance
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Abstract

TiC reinforced titanium matrix functionally graded materials (FGM) has been produced by processes of laser metal deposition through changing the powder feed rate of Ti and Cr3C2 powder. The OM, SEM, EDS methods were used to analyze the components and microstructure of the coatings. Microhardness and wearing resistance at room temperature of the FGM coating were examined by microhardness tester and wear tester respectively. The results show that FGM coating reinforced by in-situ TiC apparently improved hardness of Ti alloy; the microhardness can reach HV1100, and present gradient distribution along deposition direction. Dry sliding wear properties of these FGM coatings have been compared with substrate materials wearing. The observed wearing mechanisms are summarized and related to detailed microstructural observations. The results show the wear resistance of the coating can be improved by 46.6 times.