DIFFUSIVE AND DISPLACIVE PHASE TRANSFORMATIONS UNDER HIGH PRESSURE TORSION

Authors

  • Boris Straumal a:1:{s:5:"en_US";s:61:"Institute of Solid State Physics, Russian Academy of Sciences";}
  • Askar Kilmametov
  • Andrey Mazilkin
  • Olga Kogtenkova
  • Brigitte Baretzky
  • Anna Korneva
  • Pawel Zięba

DOI:

https://doi.org/10.12776/ams.v25i4.1368

Keywords:

kinetics, thermodynamics, phase transformations, severe plastic deformation

Abstract

Severe plastic deformation (SPD) can induce various phase transformations. After a certain strain, the dynamic equilibrium establishes between defects production by an external force and their relaxation (annihilation). The grain size, hardness, phase composition etc. in this steady-state does not depend on the initial state of a material and is, therefore, equifinal. In this review we discuss the competition between precipitation and dissolution of precipitates, amorphization and (nano)crystallization, SPD-induced accelerated mass-transfer, allotropic and martensitic transitions and formation of grain boundary phases.

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Published

2019-12-23

How to Cite

Straumal, B., Kilmametov, A., Mazilkin, A. M., Kogtenkova, O. K., Baretzky, B. ., Korneva, A. ., & Zięba, P. . (2019). DIFFUSIVE AND DISPLACIVE PHASE TRANSFORMATIONS UNDER HIGH PRESSURE TORSION. Acta Metallurgica Slovaca, 25(4), 230–252. https://doi.org/10.12776/ams.v25i4.1368

Issue

Vol. 25 No. 4 (2019): Volume 25, No 4, 2019

Section

Research papers