Hot workability analysis with processing map and texture characteristics of as-cast TX32 magnesium alloy

Publikation: Beiträge in ZeitschriftenZeitschriftenaufsätzeForschungbegutachtet

Authors

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

Hot deformation behavior of as-cast TX32 (Mg-3Sn-2Ca) alloy has been studied in uniaxial compression in the temperature and strain rate ranges of 300-500 C and 0.0003-10 s-1 with a view to characterize the evolution of microstructure and texture. On the basis of the temperature and strain rate dependence of flow stress, a processing map has been developed and the crystallographic orientation information on the deformed specimens has been obtained from electron back scatter diffraction micro-texture analysis. The processing map revealed two domains of dynamic recrystallization in the temperature and strain rate ranges of (1) 300-350 C and 0.0003-0.001 s -1 and (2) 390-500 C and 0.005-0.6 s-1. Specimens deformed at peak in Domain 1 exhibited maximum intensity of basal poles located at about 35-45 to the compression axis while those deformed at peak in Domain 2 showed near-random texture. Schmid factor analysis of different slip systems operating in the two domains suggests that basal + prismatic slip causes the basal texture in Domain 1 while second-order pyramidal slip randomizes the texture in Domain 2.

OriginalspracheEnglisch
ZeitschriftJournal of Materials Science
Jahrgang48
Ausgabenummer15
Seiten (von - bis)5236-5246
Anzahl der Seiten11
ISSN0022-2461
DOIs
PublikationsstatusErschienen - 08.2013
Extern publiziertJa

DOI