Title :

On the mechanical behavior of sintered Astaloy-85Mo: Influence of porosity and sinter conditions

Author(s) :

Gaisina, Vladilena [Auteur]
KTH Royal Institute of Technology [Stockholm] [KTH]
Andersson, Michael [Auteur]
Bonvalet Rolland, Manon [Auteur]
Department of Materials Science and Engineering [Stockholm] [MSE]
Odqvist, Joakim [Auteur]
Department of Materials Science and Engineering [Stockholm] [MSE]
Larsson, Per-Lennart [Auteur]
KTH Royal Institute of Technology [Stockholm] [KTH]
Gudmundson, Peter [Auteur]
KTH Royal Institute of Technology [Stockholm] [KTH]

Journal title :

Materials Science and Engineering: A

Abbreviated title :

Materials Science and Engineering: A

Volume number :

841

Pages :

143052

Publisher :

Elsevier

Publication date :

2022-04-28

ISSN :

0921-5093

HAL domain(s) :

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

English abstract : [en]

Astaloy™ 85 Mo is a pre-alloyed, water-atomized 0.85% Mo steel powder. The aim of the present investigation is to study the influence of porosity, controlled by both mechanical and thermal processing, on the mechanical ...
Show more >Astaloy™ 85 Mo is a pre-alloyed, water-atomized 0.85% Mo steel powder. The aim of the present investigation is to study the influence of porosity, controlled by both mechanical and thermal processing, on the mechanical properties in a bainitic microstructure of a pressed and sintered steel. To achieve this, uniaxial tensile and compression testing is performed, together with Vickers macro- and microhardness experiments. Microhardness testing is carried out in order to determine the behavior of the matrix material at a scale where porosity influence is minimized. Both the influence from size and shape of the pores is investigated and compared with relevant mechanical analyses for porous solids. Such mechanical analyses are pertinent to both elastic and plastic properties, where in the latter case the well-known Gurson-Tvergaard model for solids with spherical pores is relied upon. It is shown that assuming a spherical pore shape is not sufficient in order to achieve good agreement between predictions and experimental results and will be further investigated in future studies.Show less >

Language :

Anglais

Peer reviewed article :

Oui

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 :

2025-03-14T10:23:41Z
2025-03-14T15:19:51Z