Data supporting the hierarchically activated deformation mechanisms to form ultra-fine grain microstructure in carbon containing FeMnCoCr twinning induced plasticity high entropy alloy

Supporting data for describing the associated mechanisms in microstructure evolution and grain refinement of a carbon-doped FeMnCoCr TWIP high-entropy alloy (HEA) during thermomechanical processing. Microstructural characterization before and after deformation was performed using scanning electron microscope (SEM) outfitted with EBSD detector and transmission electron microscopy (TEM) were used for microstructure observation and investigation of nanostructure evolution during deformation. Inverse pole figure (IPF) map, grain boundary map and kernel average misorientation map (KAM) were used for systematic analysis of nanostructural evolution and deformed heterostructure consisting of hierarchical mechanical twinning, shear-banding, microbanding and formation of strain-induced boundaries (SIBs).本数据集为阐释碳掺杂FeMnCoCr孪晶诱导塑性（TWIP）高熵合金（HEA）在热机械加工过程中的微观组织演化与晶粒细化相关机制提供支撑数据。本研究采用配备电子背散射衍射（EBSD）探测器的扫描电子显微镜（SEM）与透射电子显微镜（TEM），对变形前后的试样开展微观组织表征，以观察微观结构并探究变形过程中的纳米结构演化。通过反极图（IPF图）、晶界图及核平均取向差图（KAM图），对由分级机械孪晶、剪切带、微带及应变诱导晶界（SIBs）构成的变形异质结构的纳米结构演化进行系统分析。