Effect of Natural Aging of 6xxx Series Extrusions on the Energy Absorbance Capacity

Athanasios Vazdirvanidis; George Pantazopoulos; Anagnostis Toulfatzis; Andreas Rikos; Dimitrios E. Manolakos

doi:10.4028/www.scientific.net/MSF.877.315

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HomeMaterials Science ForumMaterials Science Forum Vol. 877Effect of Natural Aging of 6xxx Series Extrusions...

Effect of Natural Aging of 6xxx Series Extrusions on the Energy Absorbance Capacity

Abstract:

In this study the influence of natural aging in energy absorbance capacity of 6xxx series extruded profiles after artificial aging is examined by means of optical and scanning electron microscopy, quasi-static compression and tensile tests. Mobile quenched-in vacancies are found to play an important role in aging kinetics and formation of precipitate free zones (PFZs) which govern both the observed fracture modes and the resulting strength of the material signifying their important effect when maximum energy absorbance is desired. It is shown that fracture toughness of naturally aged samples is equivalent or higher compared to that of directly aged samples due to restriction of intergranular cracking.

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Materials Science Forum (Volume 877)

Pages:

315-321

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.877.315

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Online since:

November 2016

Authors:

Athanasios Vazdirvanidis*, George Pantazopoulos, Anagnostis Toulfatzis, Andreas Rikos, Dimitrios E. Manolakos

Keywords:

Crashworthiness, Natural Ageing, Toughness

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