Al 3104-H32와 Almag6-O 판재의 방향별 인장 거동과 소성 이방성 = Directional Tensile Behavior and Plastic Anisotropy of Al 3104-H32 and Almag6-O Sheets

다국어 초록 (Multilingual Abstract)

Plastic anisotropy plays a critical role in sheet forming by governing deformation uniformity and directional mechanical response in aluminum alloy sheets. In this study, the directional tensile behavior of Al 3104-H32 and Almag6-O sheets was systematically evaluated along 0°, 45°, and 90° relative to rolling direction. Tensile properties, r-values, and n-values were compared, and the observed differences were interpreted using electron backscatter diffraction (EBSD) and orientation distribution function (ODF)-based texture analysis. Al 3104-H32 exhibited pronounced directional variations in yield strength, ultimate tensile strength, elongation, and r-value, together with significant planar anisotropy. In contrast, Almag6-O showed smaller directional differences in tensile properties and r-values, while exhibiting higher n-values indicative of greater strain hardening capacity. EBSD observations revealed elongated microstructural features and more concentrated preferred orientations in Al 3104-H32, whereas Almag6-O exhibited equiaxed grains and a more dispersed orientation distribution. These results indicate that the distinct directional tensile behavior and plastic anisotropy of the two commercial sheets originated from differences in microstructure and texture developed under their respective final supplied conditions.