Hot working mechanisms and texture development in Mg-3Sn-2Ca-0.4Al alloy

Research output: Journal contributionsJournal articlesResearchpeer-review

Authors

  • C. Dharmendra
  • K. P. Rao
  • Y. V.R.K. Prasad
  • N. Hort
  • K. U. Kainer

Hot deformation mechanisms in Mg-3Sn-2Ca (TX32) alloy containing 0.4% Al are evaluated in the temperature and strain rate ranges of 300-500 °C and 0.0003-10 s-1 using processing map and kinetic analysis. The evolution of microstructure and texture during high temperature compression of the alloy has been studied using an electron back scatter diffraction (EBSD) technique. The processing map for hot working revealed two domains of dynamic recrystallization (DRX) occurring in the temperature and strain rate ranges of: (1) 300-360 °C and 0.0003-0.001 s-1 and (2) 400-500 °C and 0.005-0.7 s-1, which are the two safe hot workability windows for this alloy. A regime of flow instability occurs at higher strain rates and lower temperatures where adiabatic shear banding and flow localization are the microstructural manifestations. The onset of DRX during compression at lower temperatures and strain rates (Domain 1) resulted in a fine, partially recrystallized and necklaced grain microstructure along with a texture where the basal poles are spread along 30° from the compression direction. Specimens deformed at temperatures higher than 450 °C (Domain 2) resulted in a fully recrystallized microstructure and an almost random crystallographic texture, which was attributed to the significant occurrence of pyramidal slip and associated cross-slip.

Original languageEnglish
JournalMaterials Chemistry and Physics
Volume136
Issue number2-3
Pages (from-to)1081-1091
Number of pages11
ISSN0254-0584
DOIs
Publication statusPublished - 15.10.2012
Externally publishedYes

    Research areas

  • Electron diffraction, Hot working, Metals, Microstructure, Recrystallization, Thermomechanical effects
  • Engineering

Recently viewed

Activities

  1. Die Liebe zur Kunst
  2. International Research in Children's Literature (Zeitschrift)
  3. Mitglied des IFIP-Beirats, Sitzung des IFIP-Beirats
  4. Profilbildung und Branding
  5. MA-Arbeiten 2016
  6. Sinopale Forum
  7. NETTS – Einblicke in die Hamburger Forschung
  8. Fakultät Management und Technologie (Organisation)
  9. Mohr Siebeck Verlag (Verlag)
  10. Business and Society (Fachzeitschrift)
  11. HyperKult X - Computer als Medium: Spiel-Welten 2001
  12. Startup Booster (Externe Organisation)
  13. Fachbereich Informatik und Gesellschaft (IUG) der Gesellschaft für Informatik e. V. (GI) (Externe Organisation)
  14. Mathematics (Fachzeitschrift)
  15. Treffen der SIG Qualität und Professionsentwicklung der Gesellschaft für Schreibforschung und Schreibdidaktik - 2019
  16. Vortrag „Visualizing a thousand Years: On Jewish Cemeteries and the dH Situation“
  17. Careerist or Educational Aspirants? (Re)-entry of Female Students with Work Experience into Higher Education.
  18. Aby Warburg 150. Work. Legacy. Promise.
  19. Universität von Genua
  20. Mathematik-Kommisison Übergang Schule-Hochschule (Externe Organisation)
  21. L'art queer du convivialisme et la complexité comme expérience: La culture comme transformation dans les espaces de possibilité urbains
  22. DFG-NSF Research Conference “Sustainable Use of Nanomaterials for Novel Engineering Solutions” 2009
  23. Mathematics (Fachzeitschrift)
  24. Strategic Management Journal (Fachzeitschrift)
  25. Herausforderungen der Wissensregulierung
  26. Die Kunst der Soziologie
  27. Fakultät Management und Technologie (Organisation)
  28. Bedeutung von Kliniken als Quellen des Eintrags in die Umwelt
  29. Artful Sustainability: The imagination of world-making versus the fiction of planning