CAJ | 학술논문

介绍了几种研究铝合金时效过程中微结构演变的先进实验及模拟手段，包括用于显示原子列Z衬度的高角环形暗场-扫描透射电子显微术（HAADF-STEM）、分析微区中不同元素三维空间分布的三维原子探针技术（3DAP）、复杂选区电子衍射（ SAED）模拟及第一性原理计算。综述了近年来作者及国内外学者使用这些手段研究 Cu 元素添加对6000系和7000系铝合金时效过程中微结构影响的进展，包括 Cu 添加对合金析出序列、时效析出速率、合金的析出硬化效果、析出物（如 GP区、β″亚稳相、η平衡相等）的化学计量比及原子占位等的影响。最后展望了采用热力学、动力学计算及相场模拟等方法在铝合金设计中的应用，指明了通过对铝合金微结构进行定量模拟并结合关键实验验证来实现铝合金高效设计的发展方向。
개소료궤충연구려합금시효과정중미결구연변적선진실험급모의수단，포괄용우현시원자렬Z츤도적고각배형암장-소묘투사전자현미술（HAADF-STEM）、분석미구중불동원소삼유공간분포적삼유원자탐침기술（3DAP）、복잡선구전자연사（ SAED）모의급제일성원리계산。종술료근년래작자급국내외학자사용저사수단연구 Cu 원소첨가대6000계화7000계려합금시효과정중미결구영향적진전，포괄 Cu 첨가대합금석출서렬、시효석출속솔、합금적석출경화효과、석출물（여 GP구、β″아은상、η평형상등）적화학계량비급원자점위등적영향。최후전망료채용열역학、동역학계산급상장모의등방법재려합금설계중적응용，지명료통과대려합금미결구진행정량모의병결합관건실험험증래실현려합금고효설계적발전방향。
Several advanced techniques in characterizing the microstructural evolution during ageing of Al alloys are briefly described.These include high-angle annular dark field scanning transmission electron microscopy applicable to re-veal the Z contrast of atomic columns , 3-dimensional atom probe which can visualize the spatial distribution of different el-ements in sub-micron regions of materials, simulation of complicated selected area electron diffraction and first-principles calculations.The state-of-art progress on the effect of Cu addition on the precipitation sequence of alloys , the precipitation kinetics, the age hardening response, the compositions and detailed structures of different precipitates ( such as GP zones,β″phase,ηphase) , and other aspects of microstructural evolution during ageing of 6000 Al-Mg-Si and 7000 Al-Zn-Mg Al alloys have been summarized .Finally the highly efficient alloy design based on the phase field simulations coupled with experimental verification is stressed.