|About this Abstract
||2022 TMS Annual Meeting & Exhibition
||Phase Transformations and Microstructural Evolution
||Quantitative Assessment of Short-range Order in Fe-Al and Fe-Ga Alloy Single Crystals
||Rahulkumar Sunil Singh, Andrew Laroche, Travis Willhard, Sivaraman Guruswamy
|On-Site Speaker (Planned)
||Rahulkumar Sunil Singh
Rare earth free α-Fe based Fe-Al alloys show a good combination of high strength, ductility, low-cost, moderate low-field magnetostriction, and wide range of operating temperatures, making them attractive for use in actuators and sensors. This study focuses on the quantitative assessment of short-range ordering (SRO) and its correlation with magnetostriction in Fe-Al alloy single crystal prepared using a vertical Bridgman growth process. SRO coefficients were obtained using the diffuse scattering peaks in the high resolution theta-2 theta scans of -oriented (i) as-grown and (ii) high-temperature annealed Fe-16.4 at.% Al single crystals. XRD examinations of - and -oriented single crystals were also carried out to understand the nature of ordering. The SRO coefficients in Fe-16.4 at.% Al alloy single crystal samples were correlated with magnetostriction and compared with SRO coefficients for Fe-15 at.% Ga and Fe-20 at.% Ga with similar thermal histories.