Fatigue life improvement of 7075 aluminium alloy produced by laser powder bed fusion (L-PBF).

Nothomb, N; Longin, J; Rodriguez-Barber, I; Perez-Prado, M.T.; Avettand-Fènoël, Marie-NoËlle; Simar, Aude

Type de document :

Autre communication scientifique (congrès sans actes - poster - séminaire...): Communication dans un congrès sans actes

URL permanente :

http://hdl.handle.net/20.500.12210/93427

Titre :

Fatigue life improvement of 7075 aluminium alloy produced by laser powder bed fusion (L-PBF).

Auteur(s) :

Nothomb, N [Auteur]
Institute of Mechanics, Materials and Civil Engineering [Louvain] [IMMC]
Longin, J [Auteur]
Institute of Mechanics, Materials and Civil Engineering [Louvain] [IMMC]
Rodriguez-Barber, I [Auteur]
Institute IMDEA Materials [Madrid]
Perez-Prado, M.T. [Auteur]
Institute IMDEA Materials [Madrid]
Avettand-Fènoël, Marie-NoËlle [Auteur]

Unité Matériaux et Transformations (UMET) - UMR 8207
Simar, Aude [Auteur]
Institute of Mechanics, Materials and Civil Engineering [Louvain] [IMMC]

Titre de la manifestation scientifique :

3rd European Conference on the Structural Integrity of Additively Manufactured Materials (ESIAM23)

Ville :

Porto

Pays :

Portugal

Date de début de la manifestation scientifique :

2023-09

Discipline(s) HAL :

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

Résumé en anglais : [en]

One of the main drawbacks of Laser Powder Bed Fusion (L-PBF) is the limited material palette currently available and the often poor fatigue performance of the resulting parts. Currently, the only high-performance aluminium ...
Lire la suite >One of the main drawbacks of Laser Powder Bed Fusion (L-PBF) is the limited material palette currently available and the often poor fatigue performance of the resulting parts. Currently, the only high-performance aluminium alloy manufacturable by L-PBF and adapted for the aerospace industry is Scalmalloy®. Moreover, this alloy uses Scandium as an alloying element which should be avoided due to its very high price. The production of parts using more conventional 7xxx aluminium alloys with the L-PBF technology is not yet fully controlled. In this study, static mechanical properties as well as fatigue performances of an Al7075 modified to avoid hot cracking manufactured by L-PBF will be analysed. First, ZrH2 addition to the Al7075 powder allows obtaining nearly fully dense parts without cracking: 99.9% relative density computed using X-Ray tomography. Afterwards, an optimised heat treatment is applied to this alloy to enhance its mechanical performances and reach a yield strength of 510MPa by controlling Cu, Mg, Zn and Zr precipitation. Finally, as fatigue performances of L-PBF alloys are usually poor, friction stir processing was applied as a post-treatment to suppress the main part of the porosities and improve fatigue performances. Indeed, friction stir processing has been proven as a very successful post-processing method to increase the fatigue life of AlSi10Mg by a factor of 100.Lire moins >

Langue :

Anglais

Audience :

Internationale

Vulgarisation :

Non

Établissement(s) :

Université de Lille
CNRS
INRAE
ENSCL

Collections :

Unité Matériaux et Transformations (UMET) - UMR 8207

Équipe(s) de recherche :

Métallurgie Physique et Génie des Matériaux

Date de dépôt :

2023-12-17T15:08:05Z
2023-12-18T10:46:50Z

Numéro de version	Lien	Date de modification
2	20.500.12210/93427*	2023-12-18T10:40:51Z
1	20.500.12210/93427.1	2023-12-17T15:08:05Z

Fatigue life improvement of 7075 aluminium ...

BibTeX

CSV

Excel

RIS

Historique des modifications

Fatigue life improvement of 7075 aluminium ... BibTeX CSV Excel RIS

Historique des modifications

Fatigue life improvement of 7075 aluminium ...

BibTeX

CSV

Excel

RIS