THERMAL EXPANSION AND TEMPERATURE DEPENDENCE OF YOUNG'S MODULUS OF NICKEL-COPPER ALLOYS

Abstract

The thermal expansion coefficient and the temperature coefficient of Young's modulus in nickel-copper alloys have been determined with a vertical dilatometer a vibrator-controlled oscillator system. The mean linear coefficient of thermal expansion curve against the compositpon axis is convex in the ferromagnetic region and concave in the paramagnetic region and also the mean temperature coefficient (0 to 40 C) of Young's modulus shows negative values in the whole composition range of the alloys except the maximum value of plus 2. 1x10-//5 in the alloy containing 29. 85% Cu.