Startseite Structure of MgLiAl alloys after various routes of severe plastic deformation studied by TEM
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Structure of MgLiAl alloys after various routes of severe plastic deformation studied by TEM

  • Jan Dutkiewicz , Stanislav Rusz , Ondrej Hilsner , Tomasz A. Tański , Wojciech Borek , Maciej Szlezynger , Piotr Bobrowski und Wojciech Maziarz
Veröffentlicht/Copyright: 11. Januar 2019
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International Journal of Materials Research
Aus der Zeitschrift International Journal of Materials Research Band 110 Heft 1

Abstract

Two MgLiAl alloys consisting either of α (hcp) + β (bcc) phases or only β phase were subjected to twist channel angular pressing TCAP (with helical component) or cyclic compression to a total strain of ∊ = 5 in order to study the effectiveness of various deformation modes on grain refinement. After the first TCAP pass grains of α phase were refined from 30 μm down to about 6 μm and of β phase from initial 200 μm down to 8 μm. MAXStrain cycling led to much finer grains of α and β phases in the range 200 – 300 nm causing higher hardening and indicating higher effectiveness of the process. The Li2MgAl precipitates were refined during severe plastic deformation (SPD) processes and in addition fine particles of hexagonal α phase of size below 100 nm were observed within the β phase showing orientation relationship (0001) α ‖ (011) β. Two-phase material after SPD showed deviation of about 1.5° from the ideal Burgers orientation relationship (0001) α ‖ (011) β.

Keywords: MgLiAl alloys; Severe plastic deformation SPD; TCAP; Max-strain cyclic deformation; TEM
*Correspondence address, Prof. Dr. hab. Eng. Jan Dutkiewicz, Institute of Metallurgy and Materials Science of the Polish Academy of Sciences, ul. Reymonta 25, 30-059 Kraków, Poland, Tel: +48122952861, Fax: +48122952804, E-mail: , Web: http://www.imim.pl

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Received: 2017-11-20
Accepted: 2018-03-07
Published Online: 2019-01-11
Published in Print: 2019-01-09

© 2019, Carl Hanser Verlag, München

Artikel in diesem Heft

  1. Contents
  2. Contents
  3. Editorial
  4. XVI International Conference on Electron Microscopy
  5. Original Contributions
  6. Application of analytical electron microscopy and FIB-SEM tomographic technique for phase analysis in as-cast Allvac 718Plus superalloy
  7. Microstructure and properties of laser interference crystallized amorphous FeSiB ribbon
  8. Analysis of amorphous regions in severely marformed NiTi shape memory alloy
  9. Structure of MgLiAl alloys after various routes of severe plastic deformation studied by TEM
  10. Microstructure and selected mechanical and electrical property analysis of Sr-doped LaCoO3 perovskite thin films deposited by the PLD technique
  11. Microstructure of an oxide scale formed on ATI 718Plus superalloy during oxidation at 850 °C characterised using analytical electron microscopy
  12. Effect of powder morphology on the microstructure and properties of cold sprayed Ni coatings
  13. Microstructure of Ti/Al multilayer foils ignited with electric current
  14. Evolution of γ′ morphology and γ/γ′ lattice parameter misfit in a nickel-based superalloy during non-equilibrium cooling
  15. Effect of heat treatment on the precipitation hardening in FeNiCoAlTaB shape memory alloys
  16. The structure and formation mechanism of FeS2/Fe3S4/S8 nanocomposite synthesized using spherical shaped Fe3O4 nanoparticles as the precursor
  17. Short Communications
  18. Characterization of Inconel 625 surface layer modified by laser shock processing
  19. DGM News
  20. DGM News
https://doi.org/10.3139/146.111680
Schlagwörter für diesen Artikel
MgLiAl alloys; Severe plastic deformation SPD; TCAP; Max-strain cyclic deformation; TEM

Artikel in diesem Heft

  1. Contents
  2. Contents
  3. Editorial
  4. XVI International Conference on Electron Microscopy
  5. Original Contributions
  6. Application of analytical electron microscopy and FIB-SEM tomographic technique for phase analysis in as-cast Allvac 718Plus superalloy
  7. Microstructure and properties of laser interference crystallized amorphous FeSiB ribbon
  8. Analysis of amorphous regions in severely marformed NiTi shape memory alloy
  9. Structure of MgLiAl alloys after various routes of severe plastic deformation studied by TEM
  10. Microstructure and selected mechanical and electrical property analysis of Sr-doped LaCoO3 perovskite thin films deposited by the PLD technique
  11. Microstructure of an oxide scale formed on ATI 718Plus superalloy during oxidation at 850 °C characterised using analytical electron microscopy
  12. Effect of powder morphology on the microstructure and properties of cold sprayed Ni coatings
  13. Microstructure of Ti/Al multilayer foils ignited with electric current
  14. Evolution of γ′ morphology and γ/γ′ lattice parameter misfit in a nickel-based superalloy during non-equilibrium cooling
  15. Effect of heat treatment on the precipitation hardening in FeNiCoAlTaB shape memory alloys
  16. The structure and formation mechanism of FeS2/Fe3S4/S8 nanocomposite synthesized using spherical shaped Fe3O4 nanoparticles as the precursor
  17. Short Communications
  18. Characterization of Inconel 625 surface layer modified by laser shock processing
  19. DGM News
  20. DGM News
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