Effect of Stress-Strain State during Combined Deformation on Microstructure Evolution of High Carbon Steel Wire

Abstract:

It is shown that new methods of severe plastic deformation design require combining different methods of plastic deformation. As for carbon steel wire, using drawing as a basic operation is obvious. The combination of drawing with bending and twisting was estimated by the stress-strain uniformity complex. It allows choosing the deformation processing conditions which ensure the uniform stress-strain state in each point of the carbon steel wire cross section. Based on such combination, a new method for manufacturing of semi-products with ultra fine grain structure by drawing with torsion was developed. The combination of wire drawing in two consecutively arranged dies with simultaneous bending and torsion allows achieving complex stress-strain state of the processed metal and ensure the share stresses. Metallographic investigation shows that such scheme of combined plastic deformation provides the uniformity of metal microstructure in its cross section.

• Periodical: Materials Science Forum (Volume 870)
• Pages: 460-465
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.870.460
• Online since: September 2016
• Authors: Alexandr Gulin*, Marina Polyakova, Eduard Golubchik
• Keywords: Carbon Steel Wire, Combined Deformation, Grain Size, Microstructure, Stress-Strain State, Uniformity

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