Numerical and experimental studies of the interface characteristics and wave formation mechanism of Hastelloy/stainless steel explosive welding composite plate

In this paper, Hastelloy UNS N10276 was joined to stainless steel UNS S30403 by explosive welding. Theoretical analysis, computer simulation, and experiment results are combined to study the interface characteristics and wave formation mechanism of the Hastelloy/stainless steel explosive welding composite plate. The macro morphology and microstructure of the composite plate's interface were studied based on experimental research. And the explosive welding process was numerically simulated by ANSYS/AUTODYN. The formation mechanism of the wave interface was studied, and the physical quantities of the interface were analyzed, such as the tem-perature, the pressure, the heating rate, and the cooling rate. It was shown that the formation of microstructure in the melting zone was related to the temperature change history of the interface. The generation of the jet was the key factor to achieving explosive welding, and the formation mechanism of the wave interface was close to the indentation theory. Additionally, some significant phenomena in explosive welding have been studied.

Automated summary

In this paper, the explosive welding of Hastelloy UNS N10276 to stainless steel UNS S30403 was studied by combining theoretical analysis, computer simulation, and experimental results. The interface characteristics and wave formation mechanism of the Hastelloy/stainless steel explosive welding composite plate were investigated. The macro morphology and microstructure of the composite plate's interface were studied based on experimental research, and the explosive welding process was simulated numerically. The formation mechanism of the wave interface and the physical quantities of the interface were analyzed.