AVS 64th International Symposium & Exhibition
    Manufacturing Science and Technology Group Thursday Sessions
       Session MS-ThP

Paper MS-ThP1
Influence of Strain Rate on Deformation Behaviour of an AX52 Alloy Prepared by ECAP

Thursday, November 2, 2017, 6:30 pm, Room Central Hall

Session: Topics in Manufacturing Science and Technology
Presenter: Kristyna Halmesova, Comtes Fht, Czech Republic
Authors: K. Halmesova, Comtes Fht, Czech Republic
Z. Trojanova, Charles University, Prague, Czech Republic
J. Dzugan, Comtes Fht, Czech Republic
P. Minarik, Charles University, Prague, Czech Republic
Correspondent: Click to Email
Cast magnesium alloy AX52 (nominal composition Mg-5Al-2Ca in wt.%) was processed by equal channel angular pressing (ECAP) using A route and 1-8 passes. The microstructure and texture of samples have been assessed using electron backscatter diffraction and X-ray diffraction. The differences in grain size measured by these techniques allow for an understanding of microstructural evolution. Samples were tested in tension at room temperature initial strain rates in the interval from 1 x 10-3 to 1 x 102 s-1. The results reveal a significant strain rate sensitivity, which is affected by the ECAP processing. Deformation at higher strain rates became to be unstable. Deformation mechanisms operating at various strain rates are discussed in connection with microstructure and texture.