Against the quantitative analyse about metal magnetic memory technology in the course of engineering application,this paper explore the relationship between the macroscopical magneitic memory signal and the microstructure from the micro-perspective.

Its chemical composition ,shorttime tensile properties at high temperature, microscopic metallographic structure, and deterioration of service life are compared to those of conventional furnace tubes.

Based on the microscopic phase-field model, the reageing behavior of Ni-11at%Al-7at%Cr alloy from 873 K to 1023 K was simulated at atomic-scale, The order parameter profiles and volume fraction of the ordered phase was calculated according to the atomic morphology evolution, and the reageing process from 873 K to 1023 K was compared with ageing at 1023 K.

Based on the microscopic phase-field dynamic model and the microelasticity theory, the morphology evolution of Ni_3Al(γ′)phase and early precipitation mechanism in Ni-Al alloy were simulated.

0alloy were simulated based on the microscopic phase-field kinetic model and the microelasticity theory in this paper.

An dynamic model of precipitation process in ternary alloys was introduced,which was based on microscopic phase field diffusion equation and described the composition clustering and ordering reactions by ordering parameter and the probabilities of finding an atom at a given lattice.

The microstructure evolution of Al-Li alloys during aging, aging-reaging and retrogression-reaging were simulated using microscopic phase field method.

The influence of Ni-Al ordering energy from the first to the fourth layer on the atom long range order progress in Ni75Al13Cr12 alloy was investigated by microscopic phase field model.