Abstract
The effect of heat treatment on the microstructure and metallurgical properties of the interface between copper and austenitic stainless steel 304 formed by explosive bonding using different conditions of stand-off distance and material thickness was studied. Laboratory studies were carried out using optical microscopy, scanning electronic microscopy, and microhardness measurements to evaluate welded samples. Samples were subjected to heat treatment in a furnace at 300 °C for 22 or 30 h, then cooled in air. Microstructural studies showed that, as the stand-off distance and explosive load were increased, the interface between copper and stainless steel 304 became more wavy. The microhardness results showed that the hardness of the base metal was greater than in other areas near the interface because of extreme plastic deformation due to the explosive force. The results also showed that, as the temperature and heat treatment duration were increased, the hardness of the flyer plate at the interface decreased compared with before heat treatment.
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Padash, E., Khanzadeh, M., Bakhtiari, H. et al. Effect of Heat Treatment Duration on Interface Characteristics of Explosively Bonded Cu/SS-304 Plates. Metallogr. Microstruct. Anal. 10, 74–85 (2021). https://doi.org/10.1007/s13632-021-00715-z
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DOI: https://doi.org/10.1007/s13632-021-00715-z