Modeling of β→α Transformation in Complex Titanium Alloys

Paolo Di Napoli; Benoît Appolaire; Elisabeth Aeby Gautier; Adeline Bénéteau

doi:10.4028/www.scientific.net/SSP.172-174.1044

Paper Titles

Simulations of Decomposition Kinetics of Fe-Cr Solid Solutions during Thermal Aging
p.1016

Saddle Point Energies from Ab Initio Jump Profiles in MC Simulation of Order Kinetics in Intermetallics.
p.1022

Modelling of Reaction of Metallic Nanospheres with Gas
p.1028

Magic Numbers for Bimetallic Clusters
p.1038

Modeling of β→α Transformation in Complex Titanium Alloys
p.1044

Phase Field Modelling of Austenite Formation in Low Carbon Steels
p.1050

Investigation of Spinodal Decomposition in Fe-Cr Alloys: CALPHAD Modeling and Phase Field Simulation
p.1060

3D Phase Field Modeling of Martensitic Microstructure Evolution in Steels
p.1066

Phase-Field Modelling of Spinodal Decomposition during Ageing and Heating
p.1072

HomeSolid State PhenomenaSolid State Phenomena Vols. 172-174Modeling of β→α Transformation in Complex Titanium...

Modeling of β→α Transformation in Complex Titanium Alloys

Abstract:

A model has been developed which is able to predict the kinetics of β → α transformation in industrial multicomponent titanium alloys during complex heat treatments. It isbased on (i) analytical nucleation and growth laws based on simple geometric representationsof the di erent morphologies commonly observed in these alloys; (ii) the assumption of localequilibrium at interfaces, handled within the CalPhaD framework; (iii) averaged solute balancesin each morphology. The potentialities of the model will be demonstrated on the Ti17 industrialalloy upon isothermal holdings and cooling from the β phase field.