About this Abstract |
Meeting |
2022 TMS Annual Meeting & Exhibition
|
Symposium
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Characterization of Minerals, Metals and Materials 2022
|
Presentation Title |
Sample Preparation Influence on a Direct Artificially Aged Al-Si-Mg Alloy Elaborated by Laser Beam Melting |
Author(s) |
Nicolas Bello, Cassiopée Galy, Céline Larignon, Joël Douin |
On-Site Speaker (Planned) |
Nicolas Bello |
Abstract Scope |
Fine microstructure of aluminium alloys is known to be strongly affected by temperature hence the need to control the temperature during the sample preparation process. For this study, a direct artificially aged Al-Si-Mg alloy is used. This alloy was obtained by laser beam melting and is composed by a complex microstructure featuring nano-sized precipitates and a silicon 3D structure. Direct artificial ageing was conducted to stabilize the alloy and enhance mechanical properties.
The comparison of several TEM preparation techniques showed the classical twin jet benefit for a more defined aluminium cell with fewer effects on the Si-structure. The observed Si-network is thinner with the use of PIPS and FIB techniques. These techniques induce a strong modification of the nanoprecipitates observed in the microstructure due to the local heating and ion irradiation. However, the cryogenic temperature combined with the FIB technique seems to be equivalent with the twin jet electropolishing. |
Proceedings Inclusion? |
Planned: |
Keywords |
Aluminum, Additive Manufacturing, Characterization |