Viscoelastic mechanical properties measurement of thin Al and Al–Mg films using bulge testing
- Award ID(s):
- 1332574
- PAR ID:
- 10049928
- Date Published:
- Journal Name:
- Thin Solid Films
- Volume:
- 618
- Issue:
- PA
- ISSN:
- 0040-6090
- Page Range / eLocation ID:
- 2 to 7
- Format(s):
- Medium: X
- Sponsoring Org:
- National Science Foundation
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We present some general concepts and pose questions connected to the difference between the ambient temperature passive film formed on elemental aluminum in acid vs that which forms on iron-aluminum alloys containing less than about 35–40 at% Al. Data is presented which demonstrates that the non-protective oxide that forms on aluminum is not related to impurity effects, either in the matrix or in grain boundaries.We argue that the ability of aluminum to form a protective passive film in a single-phase solid solution alloy is connected to atomic-scale size effects that vanish once the aluminum concentration increases to about 60 at%.more » « less