In-situ tensile microtomography of crack nucleation and meso-scale deofrmation mechanics in Ni-based alloy Inconel 718

Inconel 718 is an alloy used in critical components in the aero-engine industry and energy sector that has high performances characteristics at high temperature and load. Digital Volume Correlation (DVC) will be employed as a primary analysis tool, using carbide precipitates in the microstructure as "trackers", to compute the macroscopic strain tensor and elucidate the meso-scale deformation mechanics, and particularly cracks that nucleate within the precipitates themselves.

因科内尔718合金(Inconel 718)是一种应用于航空发动机工业与能源领域关键构件的合金，其在高温与高载荷条件下拥有卓越的性能表现。本研究将采用数字体相关技术(Digital Volume Correlation, DVC)作为核心分析手段，以微观组织中的碳化物析出相作为“追踪标记”，计算宏观应变张量，阐明细观尺度的变形力学机制，尤其针对在析出相内部形核的裂纹展开深入分析。