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DOI码：10.1016/j.jallcom.2020.157023

发表刊物：Journal of Alloys and Compounds

关键字：High entropy alloys, Diamond, Interfaces, Diffusion, Carbides

摘要：The double effect of diffusion barrier and interfacial strengthening on the interface behavior in a Ticoated diamond and high entropy alloy (HEA) composite was investigated. The first-principles simulations exhibited that the in-situ formed TiC played a significant role as a diffusion barrier between diamond and HEA matrix, resulting in the reduction of sp2 hybridization of diamond and enhanced the interface bonding strength. The simulation results were further confirmed by experiments. In Ti-coated diamond-HEA composite fabricated by selective laser melting, the TiC layer obstructed the direct contact between diamond particles and the transition metal elements in HEA, thus preventing graphitization of diamond and enhancing the interface bonding strength. Moreover, part of Ti in Ti coating entered into the HEA matrix and increased the lattice distortion, resulting in substitutional solution strengthening effect and improving the retention on diamond abrasives. The superior wear properties of Ti-coated diamond composite attributed to the diffusion barrier of TiC and interfacial strengthening of TiC and Ti containing HEA solid solution.

第一作者：彭英博

论文类型：期刊论文

通讯作者：张伟

论文编号：157023

学科门类：工学

一级学科：材料科学与工程

文献类型：J

卷号：852

是否译文：否

发表时间：2020-09-06

收录刊物：SCI