Conclusions
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1.
Independently of their nature, it is characteristic of the foils investigated that the specific elongation drops sharply with decreasing foil thickness, which is due to the characteristics of the stresses during tension.
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2.
The type of variation of strength with foil thickness depends to a large extent on the structure of thematerial (grain size, size and number of secondary phase inclusions, the character of their distribution, etc.) and also the condition of the surface.
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3.
The refining of the grains in proportion with decreasing thickness of the foil promotes an increase of the strength characteristics, while the presence of coarse inclusions of secondary phases and oxidation of the surface favor reduction of the strength.
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4.
In comparison with bulk samples of the same materials, the foils have a lower specific elongation and the values of their ultimate tensile strength and yield point are very similar.
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Literature cited
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Additional information
Translated from Metallovedenie i Termicheskaya Obrabotka Metallov, No. 3, pp. 58–61, March, 1968.
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Kadaner, E.S., Kop'ev, I.M. & Toropova, L.S. Effect of thickness on the mechanical properties of loils made of aluminum and aluminum alloys. Met Sci Heat Treat 10, 218–220 (1968). https://doi.org/10.1007/BF00666868
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DOI: https://doi.org/10.1007/BF00666868