Di Wu , Haojie Gou , Yifan Shi , Lin Yang , Fei Zhang , Zulai Li , He Wei , Quan Shan
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引用次数: 0
Abstract
The mechanical properties of metal matrix composites are frequently reduced due to the uneven distribution of reinforcement particles. In this article, the effects of three-dimensional preforms with different shapes on the microstructure of WC/ Iron-based configuration composites were examined, and the hardness, friction coefficient and wear properties of WC/ Iron-based configuration composites in different regions were measured. The findings reveal that the microstructure of the composites is mainly composed of WC, W2C, Fe6W6C, and M7C3 carbides. Compared with the triangular and quadrilateral configurations, the composite materials prepared by hexagonal configuration have better hardness and wear resistance, the matrix hardness is 921.7HV, the composite layer hardness is 1450.4 HV, the friction coefficient is the lowest (0.51), and the wear weight is the least (0.21 g). The temperature-time curves obtained by finite element simulation also confirm that the designed three-dimensional preform has a favorable metallurgical reaction with the matrix, especially the hexagonal configuration.
期刊介绍：
The International Journal of Refractory Metals and Hard Materials (IJRMHM) publishes original research articles concerned with all aspects of refractory metals and hard materials. Refractory metals are defined as metals with melting points higher than 1800 °C. These are tungsten, molybdenum, chromium, tantalum, niobium, hafnium, and rhenium, as well as many compounds and alloys based thereupon. Hard materials that are included in the scope of this journal are defined as materials with hardness values higher than 1000 kg/mm2, primarily intended for applications as manufacturing tools or wear resistant components in mechanical systems. Thus they encompass carbides, nitrides and borides of metals, and related compounds. A special focus of this journal is put on the family of hardmetals, which is also known as cemented tungsten carbide, and cermets which are based on titanium carbide and carbonitrides with or without a metal binder. Ceramics and superhard materials including diamond and cubic boron nitride may also be accepted provided the subject material is presented as hard materials as defined above.
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