Abstract
In the last few years, of great interest to investigators has been the physical materiology of submicrocrystalline (SMC) materials (with average grain size of about 0.1 μm). Their elastic, thermal, electrical, magnetic, and other physical properties significantly differ from those of conventional coarse-grained materials [1–4]. In this connection, of great interest are investigations of invar alloys [5]. These alloys, important from the viewpoint of their practical implementation, have a temperature coefficient of thermal expansion close to zero in the temperature range of their application. In addition, they have anomalous elastic, thermal, magnetic, and other physical properties. In the present work, the characteristic features of thermal expansion of the SMC invar alloy are studied.
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