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Metals 2019, 9(3), 339;

Explosive Welding of Copper to High Nitrogen Austenitic Stainless Steel

School of Environment and Safety Engineering, North University of China, Taiyuan 030051, China
Beijing Special Vehicle Institute, Beijing 100000, China
Authors to whom correspondence should be addressed.
Received: 12 February 2019 / Revised: 9 March 2019 / Accepted: 12 March 2019 / Published: 17 March 2019
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In this work, T2 red copper and high nitrogen austenitic stainless steel (HNASS) were explosively welded for the first time. The welding window was theoretically developed, and the experiment was designed by considering the effect of explosive loading on welding quality. To evaluate the welding quality, the microstructure and mechanical properties of the composite material were systematically investigated. The results showed that the welding quality was in good agreement with the results predicted by the welding window. The micromorphology of the welding interface changed with a varied welding parameter, and no intermetallic compounds were found at the welding interface by EDS analysis. The microhardness of the two raw materials both increased near the welding interface, and the enhancement increased with the explosive loading. The failure pattern of the welding interface in the tension-shear experiments was dominated by the strength failure of the red copper. View Full-Text
Keywords: explosive welding; copper/HNASS composite; weldability window; explosive ratio explosive welding; copper/HNASS composite; weldability window; explosive ratio

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Liu, Y.; Li, C.; Hu, X.; Yin, C.; Liu, T. Explosive Welding of Copper to High Nitrogen Austenitic Stainless Steel. Metals 2019, 9, 339.

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