Reconstruction of Parent Microstructures in TRIP Titanium Alloys
Alec Saville, Ben Ellyson, Jake Benzing, Amy Clarke
The metastable β-Ti titanium alloy Ti-10V-2Fe-3Al (wt%) exhibits transformation induced plasticity (TRIP) (or the transformation of the parent β phase to product martensite) and desirable work hardening characteristics. However, the majority of the parent β-Ti microstructure is transformed into α'' martensite during deformation by TRIP, obscuring how parent grain orientations influence the deformation behavior. This work demonstrates the successful reconstruction of parent β-Ti grain orientations from partially transformed microstructures consisting of remnant β-Ti and α'' martensite. A new orientation relationship (OR) between the β-Ti and α'' phase was determined and shown to reconstruct parent microstructures more accurately than previous OR's using modern phase reconstruction methods. This enables the calculation of orientation specific properties of deformation mechanisms and provides a useful tool to further understand the deformation behavior of metastable β-Ti alloys like Ti-10V-2Fe-3Al.
, Ellyson, B.
, Benzing, J.
and Clarke, A.
Reconstruction of Parent Microstructures in TRIP Titanium Alloys, Scripta Materialia, [online], https://doi.org/10.1016/j.scriptamat.2022.115248, https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=935130
(Accessed October 4, 2023)