S. V. Smirnov, M. V. Myasnikova, A. S. Igumnov

DETERMINATION OF THE LOCAL SHEAR STRENGTH OF A LAYERED METAL COMPOSITE MATERIAL WITH A DUCTILE INTERLAYER AFTER THERMOCYCLING

Using a composition of AMg6 alloy and 12Kh18N10T steel sheets with an intermediate thin layer of the AD1 aluminum alloy as an example, an experimental and theoretical technique is developed for estimating the shear strength of a layered metal composite material with a plastic interlayer. By Vickers indentation results, vertical sides on the boundaries between the composite of layers formed due to interlayer shear have been detected. Dependences relating shear stresses in the interfaces to the indentation depth at different values of the height of the sides have been obtained. The technique has been applied to the examination of this composite after thermocycling and the decrease of the interlayer shear strength of the composite after 25 cycles of the shock change of temperature from -18 °C to +100 °C has been evaluated.

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