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TIAN YINGLIANG1, LI QINGTANG1, QIAO HONG1, FU HANGUANG1,* , LEI YONGPING1
A Fe based composite coating reinforced by in situ synthesized TiB2 and TiC particles was fabricated on Cr12MoV steel b y using 6KW fiber laser cladding. The microstructure and the microhardness of the coating in profile across were investigated by means of X ray diffraction, scanning electron microscopy (SEM), energy dispersive spectroscopy (EDS), transmission electron microscope (TEM) and a hardness tester. The abrasive wear resistance of coating was evaluated using a MLS 225 wet sand rubber wheel testing machine. The coating mainly consists of TiB2, TiC, Fe2B and αFe. The gr ains are refined. There are no cracks and few stomas in the coating. Defect free coating with metallurgical joint to the substrat e was obtained. From the surface of cladding layer 0.8 mm the highest micro hardnes s is up to HV 920, obviously higher than that of the substrate. Due to the exhibits of TiB 2 and TiC phases the laser clad coating has good wear resistance..
Laser cladding, In situ synthesized, Micro hardness, Wear resistance.
TIAN YINGLIANG, LI QINGTANG, QIAO HONG, FU HANGUANG, LEI YONGPING, Microstructure and wear resistance of laser cladding Fe based coatings reinforced by in situ synthesized TiB2 +Ti C, Optoelectronics and Advanced Materials - Rapid Communications, 9, 11-12, November-December 2015, pp.1544-1548 (2015).
Submitted at: July 21, 2014
Accepted at: Oct. 28, 2015
Optoelectronics and Advanced Materials - Rapid Communications
(2023): 0.5 - 2023 Journal Citation Reports (Clarivate Analytics, 2024)
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