Yung-An ChenShih-Yuan LuChien-Yu TsengTzu-Ching TsaoYo-Lun YangChih-Yuan ChenTE-CHENG SUJer-Ren Yang2025-05-152025-05-152025-05https://www.scopus.com/record/display.uri?eid=2-s2.0-86000584748&origin=resultslisthttps://scholars.lib.ntu.edu.tw/handle/123456789/729306Massive ferrite and allotriomorphic ferrite were produced respectively in samples of an interstitial-free steel. Their deformation structures (subjected to 67 % cold-rolling) and corresponding annealing structures (treated by annealing treatment at 600 °C) were investigated by scanning electron microscopy (SEM), transmission electron microscopy (TEM) and scanning transmission electron microscopy (STEM). It was found that the deformed massive ferrite completed recrystallization much faster than the deformed allotriomorphic ferrite did. The yield and ultimate tensile strengths of the fully recrystallized samples of the deformed massive ferrite were much better than those of the deformed allotriomorphic ferrite. The evolution of the annealing structure has been explored and discussed.AnnealingCold-rollingInterstitial-free steelMassive ferriteScanning electron microscopyScanning transmission electron microscopy (STEM)Transmission electron microscopyjournal article10.1016/j.matchar.2025.114933