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针对镍基粉末高温合金热挤压工艺参数窗口窄、均匀细晶组织控制难以及有效材料利用率低等问题，采用有限元模拟仿真和物理实验验证相结合的方法，系统研究新型镍基粉末高温合金FGH4113A(WZ-A3)包覆热挤压过程中不同包套结构形式对热挤压棒材的影响规律。结果表明：无论是组装挤压包套结构形式，还是一体化挤压包套结构形式，FGH4113A合金包覆热挤压过程的有限元数值模拟与物理实验结果吻合较好，整个热挤压棒材的宏观形貌平直，微观组织细小均匀且发生了比较充分的动态再结晶，平均晶粒度在ASTM 11.0级以上。FGH4113A合金热挤压棒材有效材料利用率由传统组装挤压包套结构形式的55.4%大幅提升至优化设计后一体化挤压包套结构形式的81.4%,有效降低了生产成本。
Abstract：To address the issues of narrow hot extrusion process parameter windows, difficulty in controlling uniform fine-grained microstructure, and low effective material utilization rate of alloy materials for nickel-based powder superalloy, a combined approach of finite element numerical simulation and experimental validation was employed to systematically investigate the influence of different structural forms of cladding on hot-extruded bars during the cladding hot extrusion process of a new nickel-based powder superalloy FGH4113A(WZ-A3). The results show that the finite element numerical simulation results of the FGH4113A alloy hot extrusion process are in good agreement with the experimental results for both assembled cladding structure form and integrated cladding structure form. The macroscopic morphology entire hot extruded bar is rather straight. The microstructure is fine and uniform, and sufficient dynamic recrystallization has occurred. The average grain size is above ASTM 11.0. The effective material utilization rate of the FGH4113A alloy hot extruded bar has been significantly improved from 55.4% of the traditional assembled extrusion cladding structure form to 81.4% of the optimized integrated extrusion cladding structure form, effectively reducing the production cost.
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基本信息:
中图分类号:TG376.2
引用信息:
[1]马向东,彭伟劲,肖磊,等.新型镍基粉末高温合金包覆热挤压工艺研究[J].塑性工程学报,2026,33(07):11-19.
基金信息:
深圳市科技重大专项(KJZD20230923113900001)
2026-07-20
2026-07-20
2026-07-20