集成计算材料工程及其在镁合金铸造和热处理方向上的应用探索OACSTPCD

Integrated computational materials engineering(ICME),a new paradigm for the global materials profession,is defined as the integration of materials information,captured in computational tools,with engineering product performance analysis and manufacturing process simulation.Since the introduction of the ICME concept,more than a decade has passed and during this period remarkable progress has been made in implementing ICME in aerospace,automotive and maritime industries.This paper provided a comprehensive review on this progress as well as an introduction of the efforts made in the author's research group to construct an ICME framework for the casting and heat treatment of magnesium alloy,including cellular automaton(CA)and phase field(PF)modeling of the growth of the primary dendrites,X-ray tomographic characterization of the eutectics and secondary phase,PF modeling of the precipitation during aging process,and an analytical model that can be used to predict the grain size and volume fraction of the secondary phase in as-cast microstructure as well as the number density,size,volume fraction of the precipitates in the aged alloy.At the end of this paper,the future prospects and suggestions for promoting the application of ICME are proposed.