THE PRINCIPLES OF PRODUCING AN ULTRAFINE-GRAINED STRUCTURE IN LARGE-SECTION BILLETS

R.M. Imayev, A.A. Nazarov, R.R. Mulyukov, G.F. Khasanova
Abstract
Summarizing the results of the investigations performed at IMSP RAS, the principles of producing a uniform ultrafine-grained structure in large-section billets, based on the technique of multiple isothermal forging, have been formulated. These principles imply a uniform introduction of plastic strain energy into large-section billets, minimization of contact friction between the die-set and the billets, and deformation processing in the temperature and strain-rate conditions that are most favourable for development of dynamic recrystallization.
Received: 12 January 2015   Accepted: 21 January 2015
Views: 148   Downloads: 37
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