Study on microstructure and properties of TA1-304 stainless steel explosive welding cladding plate

Abstract

Bonding TA1 and 304 stainless steel by explosive welding to obtain cladding plate. the microstructure of the bonded interface of the cladding plate was analyzed and its properties were tested. It was observed that the bonding interface of the cladding plate was periodically wavy. There is a large melting zone at the end of the interface waveform, and a vortex exists near the melting zone. The EDS surface scanning of the interface shows that there is element diffusion at the interface, and it is speculated that the bonding at the interface of the cladding plate belongs to metallurgical bonding. The microhardness measurement results show that the Vickers hardness (HV) at the interface is up to 413.10, and then the microhardness is lower with the distance from the interface junction, and gradually decreases to the same raw material. The tensile strength of 304 material after explosive welding reached 865MPa; the longitudinal shear strength of titanium-stainless steel cladding plate was 325MPa, and the transverse shear strength was 309MPa; The tested cladding plate has excellent corrosion resistance, and its corrosion resistance is between TA1 and 304. The self-corrosion current of the cladding plate is 233 μ A.

Keywords

• explosive welding
• titanium-stainless steel cladding plate
• microstructure
• mechanical properties
• bonding interface