Microstructure and Interfacial Bonding Mechanism of Tin-bronze/1010 Steel Composite Plates
Tin bronze(TB)/1010 steel bimetal laminated composites were prepared using continuous solid-liquid bonding method.Microstructure and interfacial bonding mechanism of the composites were analyzed by optical micro-structure(OM),electron probe microanalysis(EPMA)and transmission electron microscope(TEM).The mechani-cal properties and interfacial bonding strength of composites were investigated by hardness and tensile-shear tests,respectively.The results indicate that microstructure of the tin-bronze is homogeneous,while a complex microstruc-ture of ferrite+pearlite+bainite are formed in steel due to the complex temperature field during the cooling process.The composites exhibit excellent interfacial bonding properties,realizing the completely metallurgical bonding.TEM results reveal that a strong interatomic bonding interface is generated between tin bronze and 1010 steel.The tensile-shear test results demonstrate that the final fracture occurs on the tin-bronze side,and the bonding strength of the inter-face is higher than that of tin-bronze.
万方数据
维普
