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Updated: Jan 29, 2026
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Research and Development of High-performance Explosives
Published on: February 20, 2016
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Influence of Twist Channel Angular Pressing Process on Microhardness and Microstructural Behavior of Explosively
Krzysztof Żaba1, Łukasz Kuczek1, Ilona Różycka2
1Department of Metal Working and Physical Metallurgy of Non-Ferrous Metals, Faculty of Non-Ferrous Metals, AGH University of Krakow, al. Adama Mickiewicza 30, 30-059 Cracow, Poland.
Materials (Basel, Switzerland)
|January 28, 2026
Summary
This study investigated the impact of severe plastic deformation on explosively welded aluminum/copper (Al/Cu) bimetallic plates using the Twist Channel Angular Pressing (TCAP) process. Results show TCAP processing enhances microstructure and microhardness without delamination, offering potential for industrial applications.
Area of Science:
- Materials Science
- Metallurgy
- Manufacturing Engineering
Background:
- Bimetallic sheets, combining metals with diverse properties, are crucial for energy, petrochemical, and shipbuilding industries.
- Aluminum/copper (Al/Cu) bimetallic plates offer high deformability for plastic forming.
- Explosive welding is a method for creating Al/Cu bimetallic plates.
Purpose of the Study:
- To evaluate the effect of severe plastic deformation on the microstructure and microhardness of explosively welded Al/Cu plates.
- To analyze the influence of the Twist Channel Angular Pressing (TCAP) process parameters on the Al/Cu interface.
- To assess the suitability of TCAP for processing Al/Cu bimetallic materials.
Main Methods:
- Explosive welding of EN AW-1050 (Al) and Cu-ETP (Cu) plates.
- Severe plastic deformation using the Twist Channel Angular Pressing (TCAP) process.
- Microstructural analysis and microhardness testing of as-welded and TCAP-processed samples.
Main Results:
- TCAP processing resulted in a highly deformed weld interface, particularly along route Bc.
- No cracking or delamination occurred at the Al/Cu interfacial transition layer after TCAP.
- The number of TCAP passes and sample orientation influenced the microhardness of individual Al and Cu layers.
Conclusions:
- TCAP is an effective method for severe plastic deformation of explosively welded Al/Cu bimetallic plates.
- The process parameters significantly impact the microstructure and microhardness distribution.
- TCAP-processed Al/Cu bimetallic plates exhibit good interfacial integrity, suitable for industrial applications.
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