Effect of shear deformation on the microstructure and mechanical properties of a steel St3

The effect of the methods of severe plastic shear deformation on the microstructure formation in a steel St3 has been studied. The shear deformation in hot and cold states allows one to obtain different levels of mechanical properties of the metal with different characteristic features of fine struc...

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Published in:Physics of metals and metallography 2008, Vol.105 (1), p.79-87
Main Authors: Pashinskaya, E. G., Myshlyaev, M. M., Mironov, S. Yu, Varyukhin, V. N.
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Language:English
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Chemistry and Materials Science
Materials Science
Metallic Materials
Strength and Plasticity
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description The effect of the methods of severe plastic shear deformation on the microstructure formation in a steel St3 has been studied. The shear deformation in hot and cold states allows one to obtain different levels of mechanical properties of the metal with different characteristic features of fine structure. It is shown that cold plastic shear deformation is accompanied by a rise in the level of internal stresses and a considerable increase in the fraction of low-angle boundaries, which is reflected in the enhancement of strength properties. Upon hot plastic shear deformation, numerous finely dispersed grains with high-angle boundaries and small density of dislocations are formed due to the concurrent development of fragmentation and recrystallization in situ. This results in a low level of stresses in the crystal lattice and favors enhancement in plasticity.
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Materials Science
Metallic Materials
Strength and Plasticity
title Effect of shear deformation on the microstructure and mechanical properties of a steel St3
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