Title :

Modeling neck evolution and shrinkage during sintering of Astaloy® 85 Mo

Author(s) :

Gaisina, Vladilena [Auteur]
KTH Royal Institute of Technology [Stockholm] [KTH]
Bonvalet Rolland, Manon [Auteur]
Unité Matériaux et Transformations - UMR 8207 [UMET]
Andersson, Michael [Auteur]
Larsson, Per-Lennart [Auteur]
KTH Royal Institute of Technology [Stockholm] [KTH]
Gudmundson, Peter [Auteur]
KTH Royal Institute of Technology [Stockholm] [KTH]

Journal title :

Computational Particle Mechanics

Abbreviated title :

Comp. Part. Mech.

Publisher :

Springer Verlag

Publication date :

2024-12-17

ISSN :

2196-4378

English keyword(s) :

Modeling/simulations
Sintering
Powder processing
Iron alloys
Micromechanics

HAL domain(s) :

Chimie/Matériaux
Physique [physics]/Matière Condensée [cond-mat]/Science des matériaux [cond-mat.mtrl-sci]

English abstract : [en]

Porosity and interparticle neck size are microstructural parameters that play an important role for pressed and sintered materials. To understand the effect of sintering parameters such as time and temperature on the ...
Show more >Porosity and interparticle neck size are microstructural parameters that play an important role for pressed and sintered materials. To understand the effect of sintering parameters such as time and temperature on the microstructure of a pre-alloyed sintered steel (Astaloy® 85 Mo), a mean-field modeling approach tracking the neck size and geometry evolution during sintering is developed in combination with experimental studies. Building upon a mathematical framework describing the geometrical changes in a presently developed two-particle model, due to the diffusion mechanisms active during solid-state sintering, the influence of sintering conditions and of the initial microstructure on various aspects of the geometry is investigated. In addition, the predicted effects of each diffusion mechanism on different geometrical parameters are presented. To calibrate the model, the green-to-sintered dimensional change as well as experimentally observed microstructures of Astaloy® 85 Mo are also studied.Show less >

Language :

Anglais

Audience :

Internationale

Popular science :

Non

Administrative institution(s) :

Université de Lille
CNRS
INRAE
ENSCL

Collections :

• Unité Matériaux et Transformations (UMET) - UMR 8207

Research team(s) :

Métallurgie Physique et Génie des Matériaux

Submission date :

2025-02-13T11:02:38Z
2025-02-14T09:21:19Z