Tensile properties of copper, nickel, and 70-percent-copper-30-percent-nickel and 30-percent-copper-70-percent-nickel alloys at high temperatures

Abstract

Short-time tensile tests were m ade at temperatures ranging from 75 0 to 1,700 0 F on high-purity nickel, copper, a 70-percent-nickel-30-percent-copper alloy, and a 70-percenteopper-3 0-percent-nickel alloy. The high-purity component metals and the two alloys were investigated in the initial conditions, as annealed for a uniform grain size, a nd as colddrawn 40-percent reduction in area. The results were affected m a rkedly by variations in the nickel content, temperature, and degree of cold-working. However, the effects of colddrawing at room temperature were obliterated at temp eratures above that of recrystallization.