Abstract
To measure grain orientation in SEM with high accuracy a new EBSP calibration software is developed. Grain orientation determination is simply based on marking three zone axes in the live EBSP. The EBSP-technique has been applied to study misorientation between subgrains in high purity and commercially pure aluminium. The lattice curvatures, which develop during deformation, increase with the amount of deformation. During annealing the subgrains grow, resulting in an increased average neighbouring misorientation due to misorientation accumulation.
Highlights
Textures of crystalline materials are traditionally determined from bulk specimens using X-ray diffraction
This paper describes recent developments in electron backscattering patterns (EBSPs) software and applications of the EBSP-technique to study the deformation structure and processes occurring during the very early period of annealing of heavily deformed structures
The SEM settings were selected to ensure the best possible resolution of the EBSP-equipment, see Hjelen and Nes (1990), and the specimens were rotated around the TD-direction
Summary
Textures of crystalline materials are traditionally determined from bulk specimens using X-ray diffraction. These textures are macrotextures from large volumes. This paper describes recent developments in electron backscattering patterns (EBSPs) software and applications of the EBSP-technique to study the deformation structure and processes occurring during the very early period of annealing of heavily deformed structures. This involves a detailed study of the changes in the substructure with annealing time. We here describe a software system for semi-automatic on-line analysis of EBSP’s for cubic materials
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