Publications de Alain Jacot | EPFL Graph Search

Numerical Simulation of Solidification, Homogenization, and Precipitation in an Industrial Ni-Based Superalloy

Alain Jacot, Luc Rougier, Charles-André Gandin

A comprehensive simulation approach integrating solidification, homogenization, and precipitation during aging has been used to predict the formation of gamma/gamma' microstructures in the AM1 nickel-based superalloy. The particle size distribution of intr ...

Springer2016

Multiphase-Field Modeling of Micropore Formation in Metallic Alloys

Michel Rappaz, Alain Jacot, Hossein Meidani

A 3D phase-field (PhF) model has been developed to study the formation of micropores constrained to grow within a well-developed solid network. The model accounts for the equilibrium condition at triple (solid-liquid-pore) lines and the partitioning of dis ...

Springer Verlag2015

Atom probe tomography of secondary gamma ' precipitation in a single crystal Ni-based superalloy after isothermal aging at 1100 degrees C

Alain Jacot, Charles-André Gandin, Luc Rougier

Secondary gamma' precipitation in a commercial single crystal Ni-based superalloy after the 1100 degrees C isothermal aging has been investigated by atom probe tomography. After the isothermal aging for 300 s, 1800 s and 3600 s, a bimodal size distribution ...

Elsevier2014

Numerical simulation of AM1 microstructure

Alain Jacot, Charles-André Gandin, Luc Rougier, Paolo Di Napoli

A modelling approach is developed for the description of microstructure formation in the industrial AM1 Ni-base superalloy. Solidification and homogenization simulations are first carried out using a microsegregation model, before using the local compositi ...

E D P Sciences2014

Numerical simulation of precipitation in multicomponent Ni-base alloys

Alain Jacot, Charles-André Gandin, Luc Rougier, Paolo Di Napoli

A comprehensive particle size distribution model has been developed for the simulation of gamma' precipitation in multicomponent Ni alloys. Nucleation, growth and coarsening of the precipitates are described by a particle size distribution. The growth rate ...

Elsevier2013

Numerical simulation of microstructure formation during solidification and heat treatments of Ni-base superalloys

Alain Jacot, Charles-André Gandin, Luc Rougier, Paolo Di Napoli

A comprehensive modelling approach has been developed for the simulation of microstructure formation during solidification and heat treatment in Ni-base superalloys. The microsegregation taking place during solidification is simulated using the pseudo-fron ...

2012

3D Phase-Field Simulation of Micropore Formation during Solidification: Morphological Analysis

Michel Rappaz, Alain Jacot, Hossein Meidani

A 3D multiphase-field (PhF) model has been developed in order to study the formation of a micropore constrained to grow in a solid network (i.e., pinching effect). The model accounts for the pressure difference due to capillarity between liquid and gas, th ...

Iop Publishing Ltd2012

Three-dimensional phase-field simulation of micropore formation during solidification: Morphological analysis and pinching effect

Michel Rappaz, Alain Jacot, Jean-Luc Desbiolles, Hossein Meidani

A three-dimensional (3-D) multiphase-field model has been developed in order to study the formation of a micropore constrained to grow in a solid network (i.e. pinching effect). The model accounts for the pressure difference due to capillarity between liqu ...

Elsevier2012

Solute trapping-free massive transformation at absolute stability

Alain Jacot, Wilfried Kurz

Directional transformation of a hypo-peritectic Fe–17.5 at.% Co alloy was studied. Two consecutive phase transformations—solidification (liquid to delta ferrite) and solid-state transformation (δ ferrite to γ austenite)—were observed and compared with theo ...

Elsevier2011

Thermodynamic assessment of the Cu-Ge binary system

Alain Jacot, Christian Leinenbach, Jian Wang, Shan Jin

The Cu-Ge binary system was assessed thermodynamically using the CALPHAD method through Thermocalc (R) software package based on the evaluation of all available experimental data from the published literature. The solution phases, including liquid, fcc, hc ...

Elsevier2010