In-situ TEM observation of healing process in Al 6xxx based alloy

Arseenko, Mariia;Ding, Lipeng;Simar, Aude;Idrissi, Hosni
(2019) Royal Belgian Society of Microscopy (RBSM) meeting — Location: Louvain-la-Neuve, Belgium (9.September.2019)

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Abstract
Damage of Al components plays a significant role in their service life. That is why self-healing strategies are being developed in order to prevent or delay critical failure. However, mass transfer in metals is a complex question related to many phenomena, such as diffusion mechanisms, precipitation growth and stability, etc. To investigate healing ability and mechanism, in-situ heating experiments have been achieved inside a transmission electron microscope (TEM). The results showed that healing starts after just one minute of heating at 400°C. Further heating leads to complete healing of damaged particles, and subsequently their dissolution and growth. A healing time of 10 minutes yielded the optimum quantity of healed particles and mechanical properties of the alloy.
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Arseenko, M., Ding, L., Simar, A., & Idrissi, H. (2019). In-situ TEM observation of healing process in Al 6xxx based alloy. Royal Belgian Society of Microscopy (RBSM) meeting, Louvain-la-Neuve, Belgium. https://hdl.handle.net/2078.5/123989