Abstract
Abstract The effect of nickel on the hot ductility of binary copper-nickel alloys has been investigated by carrying out high-strain-rate tensile tests over a wide range of temperature in a modified ‘Gleeble’ machine. It has been shown that the intermediate-temperature ductility decreases as the nickel content increases, with the elongation at intermediate temperatures falling from 40% in a 6% nickel alloy to 10% in a 30% nickel alloy. The fracture mode also changes, becoming progressively intergranular as the ductility decreases. The role of nickel in modifying deformation behaviour at temperature in such alloys is discussed.
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