#5699. Investigation on the interfacial microstructure and mechanical properties of the W-Cu joints fabricated by hot explosive welding

August 2026publication date
Proposal available till 23-05-2025
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Journal’s subject area:
Metals and Alloys;
Industrial and Manufacturing Engineering;
Computer Science Applications;
Ceramics and Composites;
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Abstract:
The welding of thick W onto Cu, with good bonding, has been a big challenge due to the large differences in physical properties between W and Cu. Among various novel methods, explosive welding is the promising one to produce bimetals with large size and great thickness. However, the cracking of brittle W under high strain rate limits its application. In this work, hot-explosive welding technique was explored to overcome this problem. A 2 mm thick W plate was preheated to 500 ? and was successfully welded with pure Cu plate, without any cracks formed in W layer.
Keywords:
Hot-explosive welding; Interfacial shear strength; Microstructure; W-Cu bimetal

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