Strength of Ag-Ni multi-layered foils

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The effect on mechanical properties was investigated of controlled variations in the layer thickness in multi-layered Ag-Ni foils. Multi-layered foils were made by hot pressing and then cold rolling of stacked foils. The thickness of a layer of multi-layers was controlled by the rolling rate. Tensile strength of foils increased with the decrease of thickness of a layer in the manner of the Hall-Petch relation up to a certain point and then maintained a constant value even when the thickness was further decreased. The effect of the thickness ratio of the two components on tensile strength was also studied in the Ag-Ni system.

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