Texture Evolution of a Rolled Aluminum Sheet in Multi-Pass Conventional Spinning

Abstract

This study clarified the evolution of texture in the thickness direction of the cylindrical cup which was spun from a rolled aluminum sheet in 13 passes, using electron backscatter diffraction pattern analysis. The study also obtained the relationship between the strain and layer structure, characterized by the textures. The spun workpiece had three layers in the thickness direction. The layer structure was composed of four types of textures: the Cu texture, “texture-I”, which rotated 20° around <111> from the Cu texture; “texture-II”, which rotated 5° around its <110> from the Cu texture; and “texture-III”, which rotated 10° around its <001> from texture-I. When a blank disk had the sandwich-type layer structure Cu-I-Cu in its thickness direction, the structure changed to the Cu-II-II and Cu-III-III layer structures for the negative and positive thickness directional strains, respectively. A complex-type structure was found in the transition from Cu-I-Cu to Cu-II-II and Cu-III-III.

Effect and control of path parameters on thickness distribution of cylindrical cups formed via multi-pass conventional spinning

“…For the training and validation data, the path parameters ranged as follows: 13 < n p < 26, 0 < x p-start < 8, 57.9 < x p-end < 97.8, 24 < y p-end < 34, 0 < α 0 < 20, x p b(x p-end -x p-start )/ n p , (0<b < 1), 0.8 < p feed < 2.4, x p0 0, y p0 0, r s 180, θ 1 10, and θ 2 70. The parameter ranges were determined based on pre-experiments in previous studies (Gondo et al, 2020(Gondo et al, , 2021. Specific values of the path parameters used in the experiments are shown in the Excel file provided with the Supplementary Materials.…”

Advances in Microstructural Characterization of Metals by EBSD

“…Kanetas et al [3] performed a detailed microstructural characterization by the EBSD of Inconel 718 (IN718) Ni-based superalloy that was subjected to a delta-processing treatment (DP718) and, subsequently, deformed at high temperature. Gondo et al [4] studied the evolution of texture in the thickness direction of the cylindrical cup, which was spun from a rolled aluminum sheet in 13 passes, using electron backscatter diffraction pattern analysis.…”