Features of Dynamic Strain Aging of Low-Carbon Steels during Severe Plastic Deformation Processing

2017 ◽  
Vol 743 ◽  
pp. 191-196 ◽  
Author(s):  
Gennady N. Aleshin ◽  
Georgy I. Raab ◽  
Ilyas S. Kodirov
Keyword(s):  
Plastic Deformation ◽  
Strain Aging ◽  
Carbon Steels ◽  
Severe Plastic Deformation Processing ◽  
Dynamic Strain ◽  
Low Carbon ◽  
Deformation Processing ◽  
Low Carbon Steels ◽  
Angular Pressing ◽  
Steel 20Kh

The paper considers the features of the manifestation of dynamic strain aging (DSA) effect during severe plastic deformation processing via equal-channel angular pressing of low-carbon steel 10 and during the deformation processing via rolling of steel 20Kh. The deformation mechanisms under different regimes of deformation processing are analyzed. The temperature ranges for the manifestation of the DSA effect during the deformation by rolling of steel 20Kh and by equal-channel angular pressing of steel 10 are established. It is demonstrated that the deformation of low-carbon steels in the temperature range of DSA leads to further structure refinement and, as a consequence, to the enhancement in strength properties.

Multistage strain aging of low-carbon steels

2004 ◽  
Vol 364 (1-2) ◽  
pp. 35-47 ◽  
Author(s):  
M.P Staiger ◽  
A Brownrigg ◽  
P.D Hodgson ◽  
C.H.J Davies
Keyword(s):  
Strain Aging ◽  
Carbon Steels ◽  
Low Carbon ◽  
Low Carbon Steels

Texture Evolution in Si-Alloyed Ultra Low-Carbon Steels after Severe Plastic Deformation

2010 ◽  
Vol 12 (10) ◽  
pp. 1077-1081 ◽  
Author(s):  
P. Gobernado ◽  
R. Petrov ◽  
D. Ruiz ◽  
E. Leunis ◽  
Leo A. I. Kestens
Keyword(s):  
Plastic Deformation ◽  
Severe Plastic Deformation ◽  
Texture Evolution ◽  
Carbon Steels ◽  
Low Carbon ◽  
Low Carbon Steels

THE FORMATION OF ULTRAFINE FERRITE THROUGH STATIC TRANSFORMATION IN LOW CARBON STEELS

2008 ◽  
Vol 22 (18n19) ◽  
pp. 2804-2813
Author(s):  
Y. ADACHI ◽  
M. WAKITA ◽  
H. BELADI ◽  
P. D. HODGSON
Keyword(s):  
Deformation Temperature ◽  
Carbon Steels ◽  
Grain Structure ◽  
Dynamic Strain ◽  
Ultrafine Grain ◽  
Low Carbon ◽  
Low Carbon Steels ◽  
Novel Approach ◽  
Wide Range ◽  
Ultrafine Grain Structure

A novel approach was used to produce an ultrafine grain structure in low carbon steels with a wide range of hardenability. This included warm deformation of supercooled austenite followed by reheating in the austenite region and cooling (RHA). The ultrafine ferrite structure was independent of steel composition. However, the mechanism of ferrite refinement changed with the steel quench hardenability. In a relatively low hardenable steel, the ultrafine structure was produced through dynamic strain induced transformation, whereas the ferrite refinement was formed by static transformation in steels with high quench hardenability. The use of a model Ni -30 Fe austenitic alloy revealed that the deformation temperature has a strong effect on the nature of the intragranular defects. There was a transition temperature below which the cell dislocation structure changed to laminar microbands. It appears that the extreme refinement of ferrite is due to the formation of extensive high angle intragranular defects at these low deformation temperature that then act as sites for static transformation.

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