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>Microstructural characteristics and mechanical properties of bronze/steel bimetallic laminated composite prepared by protective atmosphere casting process
Microstructural characteristics and mechanical properties of bronze/steel bimetallic laminated composite prepared by protective atmosphere casting process
The bonding quality of bronze/steel bimetallic laminated composite is the key factor to whether it can be used in poor working conditions.In this study,bimetallic billets were prepared by the protective atmosphere casting process.The microstructural characteristics,mechanical properties and interface bonding mechanism of the bronze/steel bimetallic composites were analyzed comprehensively through a series of microstructure analysis (inicluding OM,SEM,and EDS) and mechanical properties tests.The experimental results demonstrate that the vaporization of lead (Pb) element in the bronze is only 0.4% in weight,and alloy elements are diffused into both sides at the interface.Moreover,the hardness in the bronze region exceeds 100.0 HV which indicates excellent wear resistance.Tensile and shear tests indicate that the fractures mainly occur on the bronze side with the interaction of the brittle fracture of Pb particles and the ductile fracture of Cu-Sn solid solution.The maximum tensile strength and shear strength reach 204.0 MPa and 211.0 MPa,respectively.These results demonstrate that the protective atmosphere casting process is applicable for the preparation of bronze/steel bimetallic laminated composite with high quality.
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机译:Data from Hunan University Provide New Insights into Materials Engineering (New Ti/beta-ti Alloy Laminated Composite Processed By Powder Metallurgy: Microstructural Evolution and Mechanical Property)
机译:Studies from Chinese Academy of Sciences Further Understanding of Metallurgy (Microstructural Evolution and Mechanical Properties of Laminated Cual Composites Processed By Accumulative Rollbonding and Annealing)