Thermo-mechanical processing of Cu-Cr alloys prepared by using electro slag crucible melting |
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Authors: | V V Satya Prasad M Sankar Y Satish Reddy Ujjwal Prakash R G Baligidad |
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Affiliation: | (1) Defence Metallurgical Research Laboratory, Hyderabad, 500 058, India |
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Abstract: | Cu-Cr ingots of Cr contents of up to 2 Wt % were prepared by melting copper scrap using electroslag crucible melting (ESCM).
Chromium addition to copper was carried out by in-situ reduction of chromium oxide present in the slag. The Cu-Cr ingots produced
were subjected to up to 90% rolling reduction using different combination of rolling and heat treatment. A range of microstructure
and mechanical properties was obtained. Alloys with recrystallised microstructure exhibited lower strength and higher ductility.
The alloys prepared by ESCM compare well with Cu-Cr alloys reported in the literature. The ESCM route is more attractive as
it uses copper scrap for melting and in-situ reduction of chromium oxide for alloying of chromium. ESCM also enables preparation
of alloy with high (up to 2%) Cr content. |
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Keywords: | Cu-Cr alloy electroslag crucible melting thermomechanical processing mechanical properties microstructure |
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