Tóm tắt
The distribution of the chemical potential in a non‐hydro statically stressed solid has been investigated. It is shown that in strained elastic bodies the potential must have the same value at all points in the solid; and a simple expression relating the chemical potential to the components of stress is derived. The effect of pure shear on the chemical equilibrium of elastic bodies appears to be small. For non‐elastic bodies which have not reached a stable configuration under stress there is an additional term in the chemical potential which is a continuous function of position in the body. The numerical value of this term cannot be computed without making additional assumptions concerning the mechanism of deformation or flow; but it appears to be small, at least for nearly elastic bodies. Elastic anisotropy is probably not an important factor in the development of an oriented fabric in rocks. Such recrystallization as may be caused by non‐hydrostatic (shear) stress is believed to result mostly from an initially uneven distribution of the stresses in the grains of the rock, or from the effect of shear on the rates of certain reactions.
