The Effect of Additions of Manganese, Titanium and Zinc on the Elinvar Property of Nickel at High Temperature

Abstract

Measurement of the linear coefficient of thermal expansion, Young’s modulus and its mean temperature coefficient, and density were carried out at elevated temperatures so as to investigate the variation in the Elinvar property of nickel at high temperature with the addition of manganese, titanium or zinc. It has been made clear from the results of these measurements that in the Ni–Mn, Ni–Ti and Ni–Zn systems investigated the temperature at which the Elinvar property of nickel appears falls down along the magnetic transformation point with increase in the additive elements, and also a minimum linear coefficient of thermal expansion which represents the Invar property is observed around a composition at which the Elinvar property occurs.