Evaluation of microstructure and texture formation during annealing of cold-rolled FeCrCuMnNi multiphase high-entropy alloy

冷轧FeCrCuMnNi多相高熵合金退火组织和织构形成的评价（英文）

Microstructure and texture variations of a cold-rolled multiphase FeCrCuMnNi high-entropy alloy were studied after different annealing treatments.Samples were heat-treated at different temperatures and for different time,and then,subjected to different tests including XRD and SEM-EBSD.The results reveal that the FCC1 phase,which goes through more strain,has lower melting temperature,and recrystallizes earlier(lower temperature and shorter time).In addition,it is seen that particle stimulated nucleation is more effective on the recrystallization of this phase compared to FCC2 phase.A significant number of FCC1 nuclei form around the BCC particles.Nucleation of FCC2 phase initiated at 800℃mostly at the grain boundaries and the inhomogeneities.The FCC1 phase was almost fully recrystallized at this temperature.The annealing process led to the elimination of rolling textures,while the Brass component remained a major component in the recrystallized samples.Increasing annealing temperature as well as annealing time led to the formation of Cube texture component,which is a major component of recrystallized low stacking fault energy materials.Furthermore,D and Rt-Co components formed during recrystallization as a result of the formation of annealing twins.

研究冷轧态FeCrCuMnNi多相高熵合金经不同退火处理后显微组织和织构的变化。样品经不同温度和不同时间热处理后进行不同的检测和表征,包括X射线衍射和扫描电镜-电子背散射衍射分析。结果显示,FCC1相具有较低的熔点,再结晶温度较低,时间较短,且应变较大。此外,与FCC2相比较,粒子激发形核对FCC1相的再结晶更有效。在BCC颗粒周围形成了大量FCC1晶核。FCC2的形核发生在800℃,大部分在晶界和不均匀处形核。此温度下,FCC1相已经完全再结晶。退火过程导致轧制组织的消除,而再结晶样品中的主要成分仍然是黄铜。提高退火温度和延长退火时间导致立方织构的形成,立方织构是低堆垛层错能材料再结晶的主要成分。此外,由于退火孪晶的形成,再结晶过程中形成了D和Rt-Co成分。