The development of high-performance structural and functional materials is vital in many industrial fields.High-and medium-entropy alloys(H/MEAs)with superior comprehensive properties owing to their specific microstru...The development of high-performance structural and functional materials is vital in many industrial fields.High-and medium-entropy alloys(H/MEAs)with superior comprehensive properties owing to their specific microstructures are promising candidates for structural materials.More importantly,multitudinous efforts have been made to regulate the microstructures and the properties of H/MEAs to further expand their industrial applications.The various heterostructures have enormous potential for the development of H/MEAs with outstanding performance.Herein,multiple heterogeneous structures with single and hierarchical heterogeneities were discussed in detail.Moreover,preparation methods for compositional inhomogeneity,bimodal structures,dualphase structures,lamella/layered structures,harmonic structures(core-shell),multiscale precipitates and heterostructures coupled with specific microstructures in H/MEAs were also systematically reviewed.The deformation mechanisms induced by the different heterostructures were thoroughly discussed to explore the relationship between the heterostructures and the optimized properties of H/MEAs.The contributions of the heterostructures and advanced microstructures to the H/MEAs were comprehensively elucidated to further improve the properties of the alloys.Finally,this review discussed the future challenges of high-performance H/MEAs for industrial applications and provides feasible methods for optimizing heterostructures to enhance the comprehensive properties of H/MEAs.展开更多
结合课程发展要求,设计思维导图-习题式主动学习(mind mapping-exercise based active learning,MEA)策略来构建主动式学习课堂,并以二轮复习专题“酵母菌和大肠杆菌”为例,由教师指导学生构建思维导图,学生研究真题命题特征与思路,归...结合课程发展要求,设计思维导图-习题式主动学习(mind mapping-exercise based active learning,MEA)策略来构建主动式学习课堂,并以二轮复习专题“酵母菌和大肠杆菌”为例,由教师指导学生构建思维导图,学生研究真题命题特征与思路,归纳出高考考查的重、难点,最后学生自编习题,从命题者的角度思考该如何考查知识点,摆脱题海战术。通过MEA策略,培养学生的生物学学科核心素养,为高三二轮复习构建主动式课堂提供借鉴。展开更多
基金National Natural Science Foundation of China(52261032,51861021,51661016)Science and Technology Plan of Gansu Province(21YF5GA074)+2 种基金Public Welfare Project of Zhejiang Natural Science Foundation(LGG22E010008)Wenzhou Basic Public Welfare Scientific Research Project(G2023020)Incubation Program of Excellent Doctoral Dissertation-Lanzhou University of Technology。
文摘The development of high-performance structural and functional materials is vital in many industrial fields.High-and medium-entropy alloys(H/MEAs)with superior comprehensive properties owing to their specific microstructures are promising candidates for structural materials.More importantly,multitudinous efforts have been made to regulate the microstructures and the properties of H/MEAs to further expand their industrial applications.The various heterostructures have enormous potential for the development of H/MEAs with outstanding performance.Herein,multiple heterogeneous structures with single and hierarchical heterogeneities were discussed in detail.Moreover,preparation methods for compositional inhomogeneity,bimodal structures,dualphase structures,lamella/layered structures,harmonic structures(core-shell),multiscale precipitates and heterostructures coupled with specific microstructures in H/MEAs were also systematically reviewed.The deformation mechanisms induced by the different heterostructures were thoroughly discussed to explore the relationship between the heterostructures and the optimized properties of H/MEAs.The contributions of the heterostructures and advanced microstructures to the H/MEAs were comprehensively elucidated to further improve the properties of the alloys.Finally,this review discussed the future challenges of high-performance H/MEAs for industrial applications and provides feasible methods for optimizing heterostructures to enhance the comprehensive properties of H/MEAs.
文摘结合课程发展要求,设计思维导图-习题式主动学习(mind mapping-exercise based active learning,MEA)策略来构建主动式学习课堂,并以二轮复习专题“酵母菌和大肠杆菌”为例,由教师指导学生构建思维导图,学生研究真题命题特征与思路,归纳出高考考查的重、难点,最后学生自编习题,从命题者的角度思考该如何考查知识点,摆脱题海战术。通过MEA策略,培养学生的生物学学科核心素养,为高三二轮复习构建主动式课堂提供借鉴。
