典型高熵合金力学行为与相结构预测研究进展

Research Progress on Mechanical Behavior and Phase Structure Prediction of Typical High Entropy Alloys

高熵合金具有高强度、高硬度、耐腐蚀等优点,在工业上具有巨大的发展潜力。典型的高熵合金相包括面心立方(FCC)相、体心立方(BCC)相、密排六方(HCP)相等固溶体相以及非晶相,独特的相结构对高熵合金的力学行为产生重要的影响。综述了不同相结构高熵合金的力学行为,总结了典型高熵合金相结构预测方法,包括经验法则、CALPHAD方法、第一性原理计算、机器学习方法等的研究进展,并给出了高熵合金相结构预测的未来发展方向。

High entropy alloys have great development potential in industry with the advantages of high strength,high hardness and corrosion resistance.The phases of typical high entropy alloys include solid solution phases,such as face-centered cubic(FCC)phase,body-centered cubic(BCC)phase and hexagonal close-packed(HCP)phase,and amorphous phases.The unique phase structure has an important influence on mechanical behaviors of high entropy alloys.The mechanical behaviors of high entropy alloys with different phase structures are reviewed,and the research progress on phase structure prediction methods of typical high entropy alloys,including empirical rule,CALPHAD method,first-principles calculation and machine learning method,are summarized.The future development direction of phase structure prediction of high entropy alloys is given.