The effect of severe plastic deformation temperature on stainless steel structure and properties

A.A. Zakirova1, E.I. Sadikova2
1Institute for Metals Superplasticity Problems RAS, Khalturin St. 39, 450001 Ufa
2Ufa State Aviation Technical University, K. Marksa St. 12, 450000 Ufa
Severe plastic deformation (SPD) by high pressure tor-sion (HPT) influence on structure and properties of 12-18 corrosion-resistant steel is investigated in this paper. SPD research take place at two temperatures: room temperature and 400 ºС.
There are deformation nonuniformity, intensive struc-ture refinement, ultra fine grain (UFG) structure and the strain-induced martensite formation are established after SPD at the both of HPT temperature.
The most intensive steel structure refinement was obtained at the deformation temperature 400 ºС, and largest microhardness - at the room deformation temperature.

Received: 26 December 2012   Revised: 25 January 2013   Accepted: 25 January 2013
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