Abstract
Drawability tests of metal sheets are known and used as technological processes that allow assessing possibilities of plastic forming. One such test is the cupping test, which is very useful for examining thin sheets of both uniform and multilayer materials. In this work, a comprehensive analysis of the shaping of the bimetallic product Al–Cu (Al-1050 + Cu-M1E) was carried out. The research covers the entire production cycle, from explosive-welding, through asymmetric rolling (ASR) to deep drawing. The scientific and cognitive aspect of the work is to determine the potential of plastic-forming processes without the need for interoperational heat treatments. Tests were carried out for two variants of bimetals used in tools: matrix–Al-1050 + Cu-M1E and matrix–Cu-M1E + Al-1050.
Highlights
Dynamic increase in demands in industrial conditions for bimetallic products has been recently observed
The process of the asymmetric rolling of bimetallic sheets was conducted in share of the Cu-M1E layer in the rolled bimetal band increased from HM1/HAl-1050 = 0.17 to HM1/HAl-1050 =
Bimetallic materials pre-connected by methods of explosive-welding were analyzed
Summary
Dynamic increase in demands in industrial conditions for bimetallic products has been recently observed. The presented example of the implementation of Al/Cu bimetal refers to the condition where oftencopper in the is manufacturing process of multilayer products, is the occurrence of intermetallic phases the outer layer in the finished product. Cu/Al a very commonly observed phase is CuAl2 This phase, which occurs in various varieties—e.g., Θ or η1—is phases [7,9,10,11,12,13,14,15,16,17,18,19,20,25,27,29,30,31,32,33,34]. The main advantage of presented in this work worktechnology, technology, is that of explosive-welding with combination of cold ASR—without is that use ofuse explosive-welding with combination of cold ASR—without heat treatment heat operation—guarantees obtaining material with enough plasticity reserve to perform the and the treatment operation—guarantees obtaining material with enough plasticity reservedrawing to perform pumping process. process
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