Effect of Ecap-Drawing on the Microstructure of a Bimetallic Wire

Effect of Ecap-Drawing on the Microstructure of a Bimetallic Wire

The change of the microstructure of a bimetallic wire during one pass of ECAP-drawing at room temperature is considered. It is shown that both layers of the bimetallic wire deform nonuniformly. The copper shell with an initial grain size of 50 μm is deformed to 30 μm on average. The steel core is ch...

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Veröffentlicht in:Metallurgist (New York) 2021-11, Vol.65 (7-8), p.769-774
Hauptverfasser: Volokitina, I. E., Naizabekov, A. B., Panin, E. A., Volokitin, A. V.
Format: Artikel
Sprache:eng
Schlagworte:
Axial stress
Bimetals
Characterization and Evaluation of Materials
Chemistry and Materials Science
Deformation
Energy conservation
Grain size
Materials Science
Metallic Materials
Microstructure
Room temperature
Surface layers
Wire
Wire drawing
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Zusammenfassung:The change of the microstructure of a bimetallic wire during one pass of ECAP-drawing at room temperature is considered. It is shown that both layers of the bimetallic wire deform nonuniformly. The copper shell with an initial grain size of 50 μm is deformed to 30 μm on average. The steel core is characterized by different grain sizes in cross-section, the initial grain size being 18. The grain size is 14 μm in the surface layers of the core and about 17 μm in the axial zone. After drawing, the grains are elongated due to tensile stresses.
ISSN:0026-0894
1573-8892
DOI:10.1007/s11015-021-01214-w