The Effect of Additions of Vanadium, Molybdenum, Tungsten, Silicon, Tin and Chromium on the Elinvar Property of Nickel at High Temperature

Abstract

Measurements of the linear coefficient of thermal expansion, Young’s modulus and its temperature coefficient, and density were carried out at elevated temperatures so as to investigate the variation of the anomaly in Young’s modulus of nickel at high temperature, the so-called Elinvar property, with additions of vanadium, molybdenum, tungsten, silicon, tin and chromium. The results of these measurements indicate that in all the alloy systems investigated the temperature at which the Elinvar property appears falls down to room temperature along the magnetic transformation point with increasing content of each additive element, and also a minimum linear coefficient of thermal expansion, the so-called Invar property, is observed around a composition where the Elinvar property occurs.