研究目的
Investigating the wear tribo-performances of laser cladding Colmonoy-6 and Stellite-6 micron layers on Stainless Steel 304 using Yb:YAG Disk Laser.
研究成果
The study concluded that the microstructure of the Colmonoy-6 and Stellite-6 cladding consisted of carbides embedded in a Ni-rich and Co-rich solid solution with dendritic structure, respectively. The hardness was increased about 2 to 2.5 times with deposition of Stellite-6 and Colmonoy-6. Colmonoy-6 cladded SS-304 surface showed lower wear rate than Stellite-6 cladded SS-304 surface. Adhesive and abrasives are the most dominant wear mechanisms.
研究不足
The study focuses on the wear tribo-performances of laser cladding Colmonoy-6 and Stellite-6 micron layers on Stainless Steel 304. The limitations include the specific materials and laser parameters used, which may not be applicable to other materials or conditions.
1：Experimental Design and Method Selection:
The study involved the production of Colmonoy-6 and Stellite-6 coatings on 304 Stainless steel using a high power Yb:YAG disk laser. The process parameters such as power, scanning speed, and feed rate were optimized for defect-free and good bonding of the coating.
2：Sample Selection and Data Sources:
Stainless steel 304 was used as the base material with dimensions of 30 × 30 × 30 mm. The base material was sand blasted to obtain a surface roughness of 7 microns.
3：List of Experimental Equipment and Materials:
A high power Yb:YAG disk laser was used for cladding. The chemical compositions of the selected materials were analyzed.
4：Experimental Procedures and Operational Workflow:
The specimens were prepared, cleaned, and dried. The laser cladding process was carried out with optimized parameters. The coated specimens were then prepared for wear tests.
5：Data Analysis Methods:
The microstructure, hardness, and wear properties of the coatings were analyzed using optical microscopy, FE-SEM, EDS, and X-ray diffraction.
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