Abstract
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.
Highlights
Most of the steelmaking process occurs at elevated temperature which, for most steel grades, implies that part of the processing occurs in the austenitic phase
The direct observation of the austenitic phase is not trivial. It can only be done at elevated temperatures, and it can only be observed within very specialized in-situ equipment like Electron Backscatter Diffraction (EBSD) with a hot stage[1]
These grains can be identified by its higher average angular deviation, and they should be further refined by running an extra iteration step with reduced coarsening level
Summary
This content has been downloaded from IOPscience. Please scroll down to see the full text. 82 012059 (http://iopscience.iop.org/1757-899X/82/1/012059) View the table of contents for this issue, or go to the journal homepage for more. Download details: IP Address: 131.180.130.205 This content was downloaded on 01/06/2015 at 12:22 Please note that terms and conditions apply
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