The GH4141 superalloy with 20, 40 and 55% cold deformations is annealed at 1080, 1120 and 1180 °C for 3-25 min to study the recrystallization and twinning behavior. The migration rate of grain boundaries increases significantly as the temperature increases in the range of 1080-1180 °C. After recrystallization, the hardness of the alloy is obviously reduced, and the recrystallized grains are randomly oriented without preferred orientation. The orientation imaging microscopy maps indicate that large amounts of Σ3 twin boundaries caused by the stacking faults appear in recrystallized grains. On one hand, the fraction of Σ3 boundaries after short time annealing has increased with the increase of temperature, meaning that the higher temperature contributes to the faster migration rate of grain boundaries and thus promotes the formation of stacking faults and twin boundaries before full recrystallization. On the other hand, the density of Σ3 boundaries has gradually decreased with the increase of grain size due to the annihilation and rare formation of twin boundaries after full recrystallization. The twinning evolution can be explained using the classical growth accident model.

具有20％，40％和55％的冷变形的GH4141高温合金在1080、1120和1180°C退火3-25分钟，以研究重结晶和孪晶行为。随着温度在1080-1180°C范围内增加，晶界的迁移速率显着增加。再结晶后，合金的硬度明显降低，再结晶晶粒随机取向，没有优选的取向。取向成像显微镜图表明，由堆垛层错引起的大量Σ3孪晶边界出现在重结晶晶粒中。一方面，短时退火后的Σ3边界分数随温度的升高而增加，这意味着较高的温度有助于更快地进行晶界迁移，从而促进在完全重结晶之前形成堆垛层错和孪晶界。另一方面，Σ3晶界的密度随着晶粒尺寸的增加而逐渐降低，这是由于在完全重结晶后的boundaries灭和双晶界的罕见形成。孪生演化可以用经典的生长事故模型来解释。