Dataset for "Thermomechanical and Isothermal Fatigue Behaviour of C263 Nickel-based Superalloy"

This dataset contains experimental data supporting the study of thermomechanical and isothermal fatigue behaviour of the C263 nickel-based superalloy. The data were generated during isothermal fatigue (IF), thermomechanical fatigue in-phase (TMF-IP), and thermomechanical fatigue out-of-phase (TMF-OP) testing. The dataset includes mechanical fatigue data, cyclic stress–strain relationships, softening and hardening behaviour, fatigue life data, and microstructural characterisation obtained using scanning and transmission electron microscopy (SEM, STEM), electron backscatter diffraction (EBSD), and energy-dispersive X-ray spectroscopy (EDS). Mechanical data are provided in open tabular formats (TXT, CSV and XLSX) and include strain amplitude, stress amplitude, cycle number, and fatigue life parameters used for Basquin, Manson–Coffin, and cyclic stress–strain analyses. Softening and strengthening curves are provided separately for IF, TMF-IP, and TMF-OP loading conditions. Microstructural data include high-resolution SEM and STEM micrographs, EBSD orientation maps, inverse pole figure maps, and selected area electron diffraction (SAED) patterns documenting deformation mechanisms, dislocation structures, crack initiation, fracture behaviour, and dynamic recrystallization. All microscopy images are accompanied by detailed README files describing acquisition conditions, instruments, and processing steps. Each figure-related dataset is stored in a separate folder and documented by a plain-text README file describing the data content, provenance, processing workflow, and abbreviations. The dataset is structured to be understandable and reusable independently of the associated research article. The data support qualitative and quantitative analysis of cyclic deformation mechanisms, fatigue damage evolution, and microstructure–property relationships in nickel-based superalloys under complex thermomechanical loading conditions.本数据集包含支撑C263镍基高温合金热机械与等温疲劳行为研究的实验数据。相关数据产生于等温疲劳（Isothermal Fatigue, IF）、同相热机械疲劳（In-phase Thermomechanical Fatigue, TMF-IP）以及异相热机械疲劳（Out-of-phase Thermomechanical Fatigue, TMF-OP）测试过程中。 数据集涵盖机械疲劳数据、循环应力-应变关系、软化与硬化行为、疲劳寿命数据，以及通过扫描电子显微镜（Scanning Electron Microscopy, SEM）、扫描透射电子显微镜（Scanning Transmission Electron Microscopy, STEM）、电子背散射衍射（Electron Backscatter Diffraction, EBSD）和能量色散X射线光谱（Energy-dispersive X-ray Spectroscopy, EDS）获得的微观结构表征数据。 机械数据以开放表格格式（TXT、CSV及XLSX）提供，包含应变幅值、应力幅值、循环次数以及用于Basquin、Manson-Coffin及循环应力-应变分析的疲劳寿命参数。针对IF、TMF-IP与TMF-OP三种加载工况，分别提供了软化与硬化曲线。 微观结构数据包含高分辨率SEM与STEM显微图像、EBSD取向图、反极图，以及用于记录变形机制、位错结构、裂纹萌生、断裂行为与动态再结晶的选区电子衍射（Selected Area Electron Diffraction, SAED）花样。所有显微图像均附带详细的README文件，对采集条件、仪器设备与处理步骤进行说明。 每个与图表相关的数据集均存储于独立文件夹中，并由纯文本README文件进行说明，涵盖数据内容、来源、处理流程与缩写说明。本数据集的结构设计可脱离相关研究论文独立被理解与复用。 本数据集可支撑复杂热机械加载工况下镍基高温合金循环变形机制、疲劳损伤演化以及微观结构-性能关联的定性与定量分析。