The interrupted aging mechanisms were applied to Ni75Al2.9V22.1 alloy by using the microscopic phase-field simulation method. For the single phase region existing at high temperature, the low content alloy was used as the study object. With the progressive aging mechanisms, the metastable phase γ' of high temperature can be obtained from the low temperature two phase regions, and the quantity of γ' phase reduces with increasing temperature. The θ single phase morphology at high temperature regions will turn to be the γ'+θ two phase morphology at low temperature with the interrupted aging method. Despite of the different precipitation paths of γ' phase, the precipitation mechanisms are the same for the low temperature aging and high temperature interrupted aging.
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