A Study on the Recrystallization Behavior of Ni-Based Alloy G3 During Hot Deformation
A Study on the Recrystallization Behavior of Ni-Based Alloy G3 During Hot Deformation
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DOI：
10.1007/s11665-016-2412-x
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发表时间：
2016-10
影响因子：
2.3
通讯作者：
He Jiang;Jian-Xin Dong;Mai-cang Zhang;Zhihao Yao;Wang Jue
中科院分区：
文献类型：
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作者：
He Jiang;Jian-Xin Dong;Mai-cang Zhang;Zhihao Yao;Wang Jue
建立了综合考虑动态再结晶(DRX)、后动态再结晶(PDRX)和晶粒长大的形变热处理组织演变模型。在Gleeble-1500热模拟机上进行了不同条件下的热压缩试验，模拟了后变形和冷却过程中的DRX、PDRX和短时晶粒长大过程。在此基础上，结合所建立的组织演化模型，利用DEFORM-2D软件建立了弹塑性有限元模型，模拟了热挤压过程中的组织演化过程。将模拟结果与某厂生产的G3合金热挤压管材的微观组织进行了比较。模拟结果与实验结果吻合较好，验证了所建立的微观组织演化模型的准确性。此外，有限元模拟是热变形分析的有效方法，可以为优化制造参数提供理论指导。
An integrated microstructure evolution model of thermomechanical processing was developed in terms of dynamic recrystallization (DRX), post-dynamic recrystallization (PDRX) and grain growth. Hot compression tests were carried out on a Gleeble-1500 thermal simulator under different conditions to model DRX, PDRX and short-time grain growth during the post-deformation and cooling process. Furthermore, in combination with the established microstructure evolution models, an elastic–plastic finite element model was built using DEFORM-2D software to simulate the microstructure evolution during the hot extrusion process. The simulation result was compared with the microstructure of a hot-extruded pipe of alloy G3 manufactured in a factory. The simulation results agree well with the experimental ones, validating the accuracy of the established microstructure evolution model. Furthermore, the finite element simulation is an effective method for hot deformation analysis, which can provide theoretical guidance for the optimization manufacturing parameters.