Phase transformation of the Ti-5553 titanium alloy subjected to rapid heating
Article dans une revue avec comité de lecture
Date
2022-02-19Journal
Journal of Materials ScienceAbstract
The a -> b phase transformation upon heating in the Ti-5553 alloy with lamellar-nodular bimodal microstructure was tracked in situ with high energy X-ray diffraction. Rapid heating at 10, 50 and 100 °C s-1 from room temperature to 1050 °C was tested. Phase transformation on heating was studied by a combined analysis of the microstructural features that provides estimates of mass fractions, mean lattice parameters and full width at half maximum for the two phases. In comparison with equilibrium conditions, the experimental mass fractions reveal a shift of the transformation domain toward high temperatures when the heating rate increases. Also, the dissolution of the a phase is largely impacted by its morphology, the transformation being faster for a lamellae. The combined analysis of mean lattice parameters and full width at half maximum suggests that the a -> b phase transformation on heating is diffusion controlled. The b phase therefore inherits the solute content of the adjacent parent a phase, leading to chemical heterogeneities in the b phase regardless of the heating rate.
Files in this item
Related items
Showing items related by title, author, creator and subject.
-
Article dans une revue avec comité de lecturePHAM, Tu-Quoc-Sang; GEANDIER, Guillaume; RATEL-RAMOND, Nicolas;
MAREAU, Charles; MALARD, Benoit (John Wiley & Sons, 2021-07-16)
X-Light is an open-source software that is written in Python with a graphical user interface. X-Light was developed to determine residual stress by X-ray diffraction. This software can process the 0D, 1D and 2D diffraction ... -
Article dans une revue avec comité de lectureHEYRAUD, Hugo;
ROBERT, Camille;
MAREAU, Charles;
BELLETT, Daniel;
MOREL, Franck; BELHOMME, Nicolas; DORE, Olivier (Elsevier BV, 2021-02-14)
Weld toes and weld roots of continuously welded structures subjected to cyclic loading are critical zones in terms of the fatigue resistance. The finite element method coupled with a fatigue criterion is commonly used to ... -
Article dans une revue avec comité de lectureBRACQUART, Benoit; MAREAU, Charles; SAINTIER, Nicolas; MOREL, Franck (Elsevier, 2018)Geometrical defects are known to have a detrimental influence on the high cycle fatigue resistance of metallic alloys, smaller defects being less harmful. In this experimental work, the influence of the defect size on the ...
-
Article dans une revue avec comité de lectureDEHMANI, Helmi; BRUGGER, Charles; PALIN-LUC, Thierry; MAREAU, Charles; KOECHLIN, Samuel (Elsevier, 2015)Rotors of electric machines are built from stacks of thin steel sheets. The fabrication process of these components usually involves punching operations that generate defects on the steel sheet edges. In this study, high ...
-
Article dans une revue avec comité de lectureDEHMANI, Helmi; BRUGGER, Charles; PALIN-LUC, Thierry; MAREAU, Charles; KOECHLIN, Samuel (2016)Some parts of electrical machines are built from stacks of thin steel sheets, for which the coarse grain microstructure allows for minimizing magnetic losses. The fabrication process of these parts usually involves punching ...