The Misfit Strain Energy Collapse during Precipitation in Solid Transformations

Abstract

The misfit strain energy collapse (MSEC) which results in the dendritic or split γ’ precipitating particles during solid transformations in Ni-base alloys is discovered. Three parameters of the MSEC function, the MSEC delay, the MSEC rate, and the initial value of the MSEC function, are correlated to the persistence of the isothermal cooling, the rate during the continuous cooling, and the initial misfit strain during nucleation respectively. The MSEC point is the intersection of the two crystal lattice parameters \U0001d44e\U0001d6fe’(T) and \U0001d44e\U0001d6fe(T) of the two different phases.