EFFECT OF HEAT TREATMENT ON MICROSTRUCTURE CHARACTERISTICS OF LASER COMPOSITES

Peng Liu (), Yuanbin Zhang, Yajiang Li, Qingqing Yang, Yan Liu and Guocheng Ren
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Peng Liu: School of Materials Science and Engineering, Shandong Jianzhu University, Jinan 250101, P. R. China;
Yuanbin Zhang: School of Materials Science and Engineering, Shandong Jianzhu University, Jinan 250101, P. R. China
Yajiang Li: Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials (Ministry of Education), School of Materials Science and Engineering, Shandong University, Jinan 250061, P. R. China
Qingqing Yang: Shandong Luyang Share Co., Ltd., Zibo 256120, P. R. China
Yan Liu: School of Materials Science and Engineering, Shandong Jianzhu University, Jinan 250101, P. R. China
Guocheng Ren: School of Materials Science and Engineering, Shandong Jianzhu University, Jinan 250101, P. R. China

Surface Review and Letters (SRL), 2014, vol. 21, issue 01, 1-6

Abstract: In this paper, effect of heat treatment on the microstructures and wear properties of laser alloying (LA) composites is investigated. LA of theT-Co50/FeSi/TiC/TiN/CeO2mixed powders on substrate of 45 steel can form the hard composites, which increased the wear resistance of substrate greatly. Such LA composites were investigated by means of a scanning electron microscope (SEM) and a transmission electron microscope (TEM). The tempering promoted the growth of the block-shape hard phases, favoring an enhancement of the integrity of block-shape hard phases; and tempering also improved greatly the formation mechanism,guarantyingthe composites to have enough ability of intensity transfer. This research provided essential experiment and theoretical basis to promote the application of the laser and heat treatment technologies in the field of surface modification.

Keywords: Tempering; wear; composites; surface (search for similar items in EconPapers)
Date: 2014
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DOI: 10.1142/S0218625X14500140

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