Interface microstructure and mechanical properties of selective laser melting‐formed CuCrZr alloy for 316 L stainless steel

Abstract A bimetallic structure combines the properties of two constituent materials and has a high comprehensive performance. Selective laser melting has been widely studied for its advantages such as high utilization of raw materials, short processing cycles, and the ability to form complex structures. The 316 L‐CuCrZr bimetallic structure was successfully prepared using selective laser melting. Its microstructural analysis and energy spectrum analysis indicated that the 316 L stainless steel and the CuCrZr alloy formed a good interfacial bond and that the elements at the interface exhibited a gradient distribution. The tensile strength of 316 L‐CuCrZr was 280.97 MPa, which was close to the strength of the CuCrZr alloy. The interface hardness showed a decreasing trend from that of the stainless steel to that of the copper alloy, which indicated that the interface between the 316 L stainless steel and the CuCrZr alloy was well bonded.