Characterization of microstructure and texture of binary Mg-Ce alloy processed by equal channel angular pressing
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10.1016/j.matchar.2021.111454
Inclou dades d'ús des de 2022
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hdl:2117/357703
Tipus de documentArticle
Data publicació2021-11-01
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Abstract
The characterization of microstructure and texture development of binary Mg-0.3Ce (wt%) after equal-channel angular pressing (ECAP) processing via route Bc at 300 and 350 °C through 4 passes were investigated using electron backscatter diffraction (EBSD) measurements. The results demonstrated an effective grain refinement from millimeter range to 6.7 and 8.3 µm obtained after 4 passes at 300 and 350 °C, respectively. The grain refinement was obtained through dynamic recrystallization (DRX). At 300 °C, DRX occurred at low strain by twin-induced dynamic recrystallization (TDRX) and particle stimulated nucleation (PSN) mechanism and then converted with increasing strain to sub-grain development (SD) and grain boundary bulging dynamic recrystallization (GBBDRX). Besides, grain growth occurred during processing at 350 °C. The texture development strongly depends on the strain level, deformation temperature and DRX mechanisms. At 300 °C, a typical basal texture with a deviation of 40° towards extrusion direction was formed gradually up to 4 passes while a completely different texture was formed at 350 °C due to the large grain size.
CitacióSadi, S. [et al.]. Characterization of microstructure and texture of binary Mg-Ce alloy processed by equal channel angular pressing. "Materials characterization", 1 Novembre 2021, vol. 181, p. 111454:1-111454:15.
ISSN1044-5803
Versió de l'editorhttps://www.sciencedirect.com/science/article/abs/pii/S1044580321005763
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