抄録
The properties of materials are considerably changed by high pressures. Therefore, it is possible to obtain the different properties and materials from the usual ones if we apply the high pressure to sysnthesis of materials. Because metals are extracted from minerals, even intermetallic compounds in alloys have simpler properties and structures than the minerals. Conversely, this simplicity can help us understand the phenomena in alloys under high pressures. This article reviews the diffusion, solid reactions, phase transformations and phase equilibrium in alloys under high pressures.
