| About this Abstract |
| Meeting |
MS&T24: Materials Science & Technology
|
| Symposium
|
Austenite Formation and Decomposition V: A Symposium in Memory of Prof. Mats Hillert
|
| Presentation Title |
Texture Correction Factors for Austenite Phase Fraction Measurement via Diffraction |
| Author(s) |
Michael Rae Cox, Adam Creuziger, Kip Findley, Thomas Gnäupel-Herold, Whitney Poling, Richard Thiessen |
| On-Site Speaker (Planned) |
Michael Rae Cox |
| Abstract Scope |
Advanced High Strength Steels often take advantage of metastable austenite to improve work hardening and ductility. Measurement of the austenite fraction is therefore of significant interest. One common measurement method is X-ray diffraction (XRD), which often assumes a powdered (randomly oriented) sample. Therefore, XRD measurements can be biased due to crystallographic texture. A correction factor has been developed to reduce texture bias errors by instead accounting for the per-peak influence of texture. Austenite phase fractions in as-received sheets are calculated with and without texture correction factors, and compared to neutron diffraction measurements of the same materials. Texture data from Electron Backscatter Diffraction (EBSD), XRD, and neutron diffraction, are compared to represent access to different equipment. Corrected and uncorrected results for plastically deformed samples are also considered. Correction factors were generally effective, more important for larger initial austenite fractions, and partly dependent on the resolution of the texture data. |