Niの高温におけるElinvar特性におよぼすCr, MoおよびW添加の影響について

抄録

Measurements of the linear coefficient of thermal expansion, Young’s modulus and its temperature coefficient, and density were carried out so as to investigate effects of Cr, Mo or W additions on the anomaly of Young’s modulus, i.e. the Elinvar property, of nickel at high temperature. It was found that in the Ni-Cr, Ni-Mo and Ni-W binary systems the Elinvar property of nickel at high temperature falls down gradually to room temperature along the magnetic transformation point with increasing addition of each element, and also a minimum linear coefficient of thermal expansion, characteristic of the Invar property appears in a composition range where the Elinvar property is revealed.