Analysis of microstructure and texture evolution in AZ31Mg alloy fabricated by direct/indirect extrusion process

직/간접 압출공정에 의해 제조된 AZ31Mg 합금의 미세조직 및 집합조직 변화 분석

To investigate the evolution of microstructure and texture in AZ31 Mg alloy, direct/indirect extrusion process was carried out at $300^{\circ}C$ with various extrusion speeds. The distribution of grain size depends on extrusion method and extrusion speed. More homogeneous grain site can be obtained at higher extrusion speed of indirect extrusion process. Extrusion speed does not affect significantly texture evolution during extrusion process regardless of extrusion method. ODF section is more useful to understand texture evolution during extrusion process compared with pole figure.