The present study investigates the effect of annealing time and temperature on the microstructural restoration (by recovery and recrystallization), texture evolution and tensile properties of a dual-phase TWIP steel. The samples, which were initially hot rolled-air cooled followed by being in solution treated condition, subsequent 50 pct cold rolled condition and different annealing conditions (temperatures ranging from 500 °C to 1000 °C for 5 minutes to 2 hours), were subjected to microstructural characterization using optical and transmission electron microscopy, electron backscatter diffraction analysis, tensile testing and fractographic study. The deformation-induced ferrite (DIF) transformation due to cold deformation, the evolution of the grain structure and texture in both austenite and ferrite, and the change in the DIF fraction (accompanying the recrystallization annealing treatment) are critically analyzed. The optimum combination of strength and ductility is achieved in the partially recrystallized samples annealed at 700 °C for 30 minutes (UTS: 859 MPa, total elongation: 37 pct) and 900 °C for 30 minutes (UTS: 708 MPa, total elongation: 63 pct).The effects of DIF on the evolution of microstructure and texture during annealing and the final properties are discussed.

本研究研究退火时间和温度对双相TWIP钢的组织恢复（通过恢复和再结晶），织构演变和拉伸性能的影响。首先对样品进行热风冷，然后进行固溶处理，随后进行50 pct冷轧条件和不同的退火条件（温度范围为500°C至1000°C，持续5分钟至2小时）。使用光学和透射电子显微镜，电子背散射衍射分析，拉伸测试和分形学研究对微观结构进行表征。冷变形引起的形变铁素体（DIF）转变，奥氏体和铁素体中晶粒结构和织构的演变，并严格分析了DIF分数的变化（伴随重结晶退火处理）。在700°C退火30分钟（UTS：859 MPa，总伸长率：37 pct）和900°C 30分钟（UTS：708 MPa，总伸长率： 63 pct）。讨论了DIF对退火过程中微观结构和织构的演变以及最终性能的影响。