High-entropy alloy and aluminum alloy composite material with high wear resistance and preparation method of high-entropy alloy and aluminum alloy composite material

• Main Authors: LIAN XINLONG, TAO WANGWANG, ZHANG SHUHAO, ZHUANG DONGDONG
• Format: Patent
• Language: Chinese; English
• Published: 15.11.2022
• Subjects: CASTING; CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS ANDNON-FERROUS ALLOYS; CHEMICAL SURFACE TREATMENT; CHEMISTRY; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATIONOR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY IONIMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; COATING MATERIAL WITH METALLIC MATERIAL; COATING METALLIC MATERIAL; DIFFUSION TREATMENT OF METALLIC MATERIAL; FERROUS OR NON-FERROUS ALLOYS; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION INGENERAL; MAKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; METALLURGY; PERFORMING OPERATIONS; POWDER METALLURGY; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THESURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; TRANSPORTING; TREATMENT OF ALLOYS OR NON-FERROUS METALS; WORKING METALLIC POWDER

The invention provides a high-entropy alloy and aluminum alloy composite material with high wear resistance and a preparation method, and belongs to the field of metal material processing. According to the method, the high-entropy alloy powder and the aluminum alloy powder are mixed to prepare the composite powder, then the plate-shaped composite material is prepared through hot pressing and an extrusion die, but the mechanical property of the composite material is still lower than that of the high-entropy alloy of a single structure, and the composite material is not prone to deformation in the stress using process. The position where quality problems and crack sources are most likely to occur is still the surface layer, if a high-entropy alloy coating is prepared directly through laser cladding and other technologies, the surface performance can be strengthened, but due to the fact that the difference between the thermal expansion coefficient and the melting point of a high-entropy alloy and an aluminum all