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对Inconel 740H合金荒管进行了不同变形量的冷轧实验,分析了其冷变形特性。通过冷变形后不同制度的退火处理,对Inconel 740H合金组织演变规律进行研究,建立了退火过程中再结晶晶粒长大方程。同时引入不均匀因子Z对组织均匀性进行评定。研究表明,Inconel 740H合金中间退火处理中的静态再结晶过程主要受退火温度和保温时间影响,所构建的再结晶晶粒长大方程与实验值吻合度较好。冷轧变形量为20%,中间退火制度为1100℃/5 min时得到的组织最为均匀。
The Cold Rolling experiment of Inconel 740H alloy was carried out with different deformations, and its cold deformation characteristics were analyzed. Through the annealing of different systems after cold deformation, the microstructure evolution of Inconel 740H alloy was studied and the recrystallization grain growth equation was established. At the same time, the unevenness factor Z was introduced to evaluate the uniformity of the structure. The results show that the static recrystallization in the Inconel 740H alloy is mainly influenced by the annealing temperature and the holding time. The recrystallization grain growth equation is in good agreement with the experimental data. Cold-rolled deformation of 20%, the intermediate annealing system is 1100 ℃ / 5 min, the organization obtained the most uniform.