收录:
摘要:
TiB2 particle and TiB short fiber reinforced titanium matrix composite coatings were prepared utilizing in situ synthesized technique by laser cladding on the surface of Ti6Al4V alloy. Through the experiment, it was found that the surface of the single-track coatings appeared in the depression, but it can be improved by laser track overlapping. With the increase of laser power density, the amount of TiB short fiber was increased, and the distribution of TiB2 and TiB became more uniform from the top to bottom. The micro-hardness of TiB2/TiB coating showed a gradient decreasing trend, and the average micro hardness of the coatings was two-fold higher than that of the substrate. Due to the strengthening effect of TiB2 particle and TiB short fiber, the wear volume loss of the center of the coating was approximately 30% less than that of the Ti-6Al-4V substrate, and the wear mechanism of the coating was mild fatigue particle detachment. (C) 2016 Elsevier Ltd. All rights reserved.
关键词:
通讯作者信息:
电子邮件地址:
来源 :
OPTICS AND LASERS IN ENGINEERING
ISSN: 0143-8166
年份: 2016
卷: 86
页码: 216-227
4 . 6 0 0
JCR@2022
ESI学科: ENGINEERING;
ESI高被引阀值:166
中科院分区:3