The superplasticity of commercially pure titanium alloy at high temperature was studied and the dynamic recrystallization phenomenon of the alloy was investigated by using electron back scattered diffraction. A two-step deformation method was used to increase the ductility of the alloy from 188% to 243%. 2004 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.

H13 steel is a widely used hot work die material. A new type of hot working method is imperative to develop complex and precise dies. In this paper, the heat treatment of H13 steel (AISI) was carried out by annealing, the final structure is a point or spherical pearlite, and the grain size is about 30-40 μm. The tensile properties of the annealed microstructure were investigated at 650, 750, an...

Abstract. Grain boundary sliding, a deformation mechanism of superplasticity, occurs only at high temperatures, making it difficult for superplastic steels to be practically applied due energy consumption and surface oxidation. Therefore, in the present study, we introduce newly developed Si-added medium-Mn steel, which can superplastically deformed such low temperature 763 K. The low-temperatu...

By means of superplastic tensile test above the Ac1 temperature (γ→α transformation temperature), superplastic deformation activation energy of ultrafine-grained commercial die steel CrWMn is investigated on the basis of the Arrhenius theory equation, ) / exp( 1 RT Q A m − = σ ε& , which indicates the resistance of the superplastic deformation. According to the Arrhenius equation, the activatio...

Sergey V. Suchkov,1 Sergey V. Dmitriev,1 Boris A. Malomed,2,3 and Yuri S. Kivshar4 1Institute for Metals Superplasticity Problems, Russian Academy of Science, Ufa 450001, Russia 2Department of Physical Electronics, School of Electrical Engineering, Faculty of Engineering, Tel Aviv University, Tel Aviv 69978, Israel 3ICFO-Institut de Ciencies Fotoniques, Mediterranean Technology Park, Castelldef...