Fully automated orientation relationship calculation and prior austenite reconstruction by random walk clustering

17th International Conference on Textures of Materials

材料科学;物理学

Gomes, E.^1 ; Kestens, L.A.I.^1,2

Ghent University, Department of Materials Science and Engineering, Technologiepark 903, Gent

9052, Belgium^1

Delft University of Technology, Department of Materials Science and Engineering, Mekelweg 2, Delft

2628 CD, Netherlands^2

关键词: Angular deviations;    Austenite phase;    Fully automated;    Misorientation distributions;    Orientation relationship;    Parent phase;    Random walk clustering;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/82/1/012059/pdf
DOI  :  10.1088/1757-899X/82/1/012059

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

Two new methods, one for determining the experimentally observed Orientation Relationship (OR) and another for reconstructing prior austenite phase, are proposed. Both methods are based on the angular deviation of the OR at the grain boundaries. The first algorithm identifies the optimum OR using the misorientation distribution of the entire scan i.e. without manual selection of parent grains. The second algorithm reconstructs the parent phase using a random walk clustering technique that identifies groups of closely related grains based on their angular deviation of the OR.