|About this Abstract
||2022 TMS Annual Meeting & Exhibition
||Additive Manufacturing: Advanced Characterization with Synchrotron, Neutron, and In Situ Laboratory-scale Techniques II
||Characterization of the Healability of Aluminium Alloys Produced by Laser Powder Bed Fusion (L-PBF) Using X-ray Nanoholotomography at Synchrotron (ESRF)
||Julie Nathalie S Gheysen, Mariia Arseenko, Grzegorz Pyka, Florent Hannard, Julie Villanova, Aude Simar
|On-Site Speaker (Planned)
||Julie Nathalie S Gheysen
In aeronautic applications, overloads can damage parts and lead to their replacement. Self-healing materials, i.e. with the ability to repair internal damage, could increase the part’s lifetime. While polymer-based systems have dominated the field of self-healing materials, self-healing of metals remains an important challenge because of the slow diffusion at room temperature.
In this research, two healable aluminum alloys produced by L-PBF are developed based on:
- diffusion of healing agents towards the free surfaces of the damage voids during heat treatment;
- melting of an eutectic phase which flows towards the damage.
The healability of these two strategies was studied on damaged specimens using in-situ heating coupled with X-ray nanoholotomography at European Synchrotron Radiation Facility (ESRF). This 4D nano-imaging highlighted the progressive filling of the damage sites, allowing to optimise the healing temperature and showing the potential of these two healable aluminum alloys.
||Additive Manufacturing, Aluminum,