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A Robust Algorithm to Calculate Parent β Grain Shapes and Orientations from α Phase Electron Backscatter Diffraction Data in α/β -Titanium Alloys

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Document pages: 10 pages

Abstract: This paper presents a new model and open-source algorithm for reconstructing prior beta phase orientation and grain shapes from measured alpha-phase electron backscatter diffraction data in α β titanium alloys. It is based on the image segmentation model of Mumford and Shah, which includes a regularization term that helps create smooth boundaries and overcomes short comings of prior reconstruction techniques. Additionally, the new algorithm is resilient to noise. Our algorithm s effectiveness is demonstrated on simulated and real world data.

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