Mechanical properties and wear resistance of ZrO2 particulate-reinforced composite layer on compacted graphite cast iron processed by selective laser alloying
Source abstract
Abstract
The authors report the fabrication of a particulate-reinforced composite layer on compacted graphite cast iron by means of selective laser alloying, reinforced with ZrO2 ceramic particulates. The scanning strategy was inspired by the alternate arrangement of aragonite and organic layers on the shell surface. The particulates were uniformly embedded in the matrix. Moreover, the original microstructure was significantly modified. The microhardness, tensile strength, and wear resistances, in particular, were notably improved, due to the formation of the surface composite layer. With the increasing content of the ceramic particulates, the mechanical properties and wear resistance are further enhanced. In particular, the wear mass loss is decreased by ∼90%. This is because: (1) the overall microhardness is increased; (2) the microstructure is significantly refined; (3) the coarse graphite disappears after laser treatment, and (4) above all, a laser-fabricated metallic matrix composite layer on the surface of the sample gave rise to enhanced properties.
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Research context
OpenAlex topics: High Entropy Alloys Studies · Additive Manufacturing Materials and Processes · Advanced materials and composites
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
The Key Laboratory of Engineering Bionics (Ministry of Education, China) and the College of Biological and Agricultural Engineering, Jilin University (Nanling Campus) , 5988 Renmin Street, Changchun 130025, People's Republic of China
Department of Weld Planning, FAW-Volkswagen Co. Ltd. , 5 Anqing Road, Changchun 130011, People's Republic of China
The Key Laboratory of Automobile Materials (Ministry of Education, China) and School of Materials Science and Engineering, Jilin University (Nanling Campus) , 5988 Renmin Street, Changchun 130025, People's Republic of China
The National Engineering Laboratory for Modern Materials Surface Engineering Technology, Guangzhou Research Institute of Non-Ferrous Metals , Guangzhou 510651, People's Republic of China
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