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To address the issue that the tensile strength and fatigue life of an aviation engine support ring made of 2618 aluminum alloy fail to meet the service requirements after hot working. Electron backscatter diffraction(EBSD) was employed to characterize three distinct microstructural zones appeared on cross section of the aluminum alloy support ring. Comparative analyses of grain morphology, average grain size, recrystallized fraction, grain orientation spread(GOS), and geometrically necessary dislocation(GND) density reveals pronounced differences in recrystallization degrees among the three distinct microstructural zones. The finite element model of the hot forging process of aluminum alloy support ring was established to simulate the distributions of equivalent strain, recrystallized fraction, and average grain size under the original forging process. The results indicate that the heterogeneous recrystallization across the cross section primarily originates from the non-uniform strain distribution during hot forging. An orthogonal experimental design with three factors and three levels, including initial billet temperature, die forging speed, and friction factor, was subsequently adopted to optimize the hot forging parameters of support ring combining with numerical simulation. EBSD characterization of the forged support ring cross section after process optimization was carried out again, and the grain microstructure in all zones was refined compared with the original process. Moreover, tensile properties and fatigue life tests for optimized support ring forging were carried out, and all the indexes meet the design requirements.
[1]蔡建明,李娟,田丰,等.先进航空发动机用高温钛合金双性能整体叶盘的制造[J].航空制造技术, 2019, 62(19):34-40.CAI Jianming, LI Juan, TIAN Feng, et al. Manufacturing of high temperature titanium alloy dual-property blisk used for advanced aero-engine[J]. Aeronautical Manufacturing Technology,2019, 62(19):34-40.
[2]王建华. 2618耐热铝合金的组织与力学性能的研究[D].长沙:中南大学, 2003.WANG Jianhua. Study on microstructures and mechanical properties of heat resistance aluminum alloy 2618[D]. Changsha:Central South University, 2003.
[3]方添文.工艺参数对2618铝合金挤压棒材组织的影响[C]//2020年中国铝加工产业年度大会.佛山, 2020:281.FANG Tianwen. The influence of process parameters on the microstructure of 2618 aluminum alloy extruded bars[C]//The 2020China Aluminum Processing Industry Annual Conference. Foshan, 2020:281.
[4]邓鑫,唐鸿洋,金文福,等.铝挤压型材粗晶组织对焊接质量影响[J].有色金属加工, 2024, 53(3):36-40.DENG Xin, TANG Hongyang, JIN Wenfu, et al. Influence of coarse crystal structure of aluminum extruded profiles on welding quality[J]. Nonferrous Metals Processing, 2024, 53(3):36-40.
[5]李洪林,王宇,秦利,等.全截面粗晶对汽车用6060铝型材性能的影响[J].铝加工, 2019,(2):19-22.LI Honglin, WANG Yu, QIN Li, et al. Effect of full-section coarse grain on performance of 6060 aluminum profiles for automobiles[J]. Aluminum Fabrication, 2019,(2):19-22.
[6]郑佳,庞秋,胡志力.铝合金热成形晶粒异常长大现象研究进展[J].精密成形工程, 2020, 12(6):60-68.ZHENG Jia, PANG Qiu, HU Zhili. Research progress of abnormal grain growth in hot forming of aluminum alloys[J]. Journal of Netshape Forming Engineering, 2020, 12(6):60-68.
[7]庞嘉尧,张萃,程伟.铝合金疲劳性能研究进展[J].特种铸造及有色合金, 2022, 42(6):717-726.PANG Jiayao, ZHANG Cui, CHENG Wei. Research progress in fatigue behavior of aluminum alloy[J]. Special Casting&Nonferrous Alloys, 2022, 42(6):717-726.
[8]刘文胜,刘东亮,马运柱,等.变形温度对2A14铝合金显微组织和力学性能的影响[J].中国有色金属学报, 2015,25(2):308-314.LIU Wensheng, LIU Dongliang, MA Yunzhu, et al. Effects of deformation temperature on microstructure and mechanical properties of 2A14 aluminum alloy[J]. The Chinese Journal of Nonferrous Metals, 2015, 25(2):308-314.
[9]张宏伟,岳战国,王亚安,等.锻造工艺参数对2014铝合金锻件组织及力学性能的影响[J].精密成形工程, 2025, 17(9):87-94.ZHANG Hongwei, YUE Zhanguo, WANG Yaan, et al. Influence of forging process parameters on micro-structure and mechanical properties of 2014 aluminum alloy forgings[J]. Journal of Netshape Forming Engineering, 2025, 17(9):87-94.
[10]刘钊,孔德瑜,邓磊,等.铝合金塑性成形粗晶现象的研究进展[J].精密成形工程, 2024, 16(3):1-15.LIU Zhao, KONG Deyu, DENG Lei, et al. Advancements in investigating coarse grain phenomena in aluminum alloy plastic deformation[J]. Journal of Netshape Forming Engineering, 2024,16(3):1-15.
[11]张劲,蒋震,虞大联,等. 6082铝合金锻造组织不均匀性及其对锻件性能的影响[J].锻压技术, 2020, 45(9):8-15.ZHANG Jin, JIANG Zheng, YU Dalian, et al. Forging microstructure inhomogeneity of 6082 aluminum alloy and its effect on properties of forgings[J]. Forging&Stamping Technology,2025, 17(9):87-94.
[12]SITDIKOV O, SAKAI T. Comparative analysis of fine-grained structure formation in an Al-Zn-Mg-Cu alloy during multidirectional isothermal forging and uniaxial compression[J]. IOP Conference Series:Materials Science and Engineering, 2020, 1008(1):012070.
[13]陈雷,裴建明,郭晓敏.大口径厚壁管热挤压过程中晶粒组织均匀性数值模拟[J].塑性工程学报, 2017, 24(4):103-109.CHEN Lei, PEI Jianming, GUO Xiaomin. Numerical simulation on homogeneity of grain structure for large diameter and thick wall pipes during hot extrusion process[J]. Journal of Plasticity Engineering, 2017, 24(4):103-109.
[14]KONSTANTINOV L I, GUBANOV Y I, ASTRASHABOV O I,et al. Simulation of die forging of an AK6 aluminum alloy forged piece[J]. Russian Journal of Non-Ferrous Metals, 2015, 56(2):177-180./
[15]ASTME8E8M-16a, Standardtestmethodsfortensiontestingof metallicmaterials[S].
[16]ASTM E466-15, Standard practice for conducting force controlled constant amplitude axial fatigue tests of metallic materials[S].
[17]ZHOU H, KONG F, WU K, et al. Hot pack rolling nearly lamellar Ti-44Al-8Nb-(W, B, Y)alloy with different rolling reductions:Lamellar colonies evolution and tensile properties[J].Materials&Design, 2017, 121:202-212.
[18]ZONG Y, WEN D, LIU Z, et al. γ-Phase transformation, dynamic recrystallization and texture of a forged Ti Al-based alloy based on plane strain compression at elevated temperature[J].Materials&Design, 2016, 91:321-330.
[19]?ZBEK I. A study on the re-solution heat treatment of AA 2618 aluminum alloy[J]. Materials Characterization, 2007, 58(3):312-317.
[20]黄光胜,汪凌云,陈华,等. 2618铝合金的热变形和加工图[J].中国有色金属学报, 2005, 15(5):763-767.HUANG Guangsheng, WANG Lingyun, CHEN Hua, et al. The deformation and processing maps of 2618 aluminum alloy[J].Chinese Journal of Nonferrous Metals, 2005, 15(5):763-767.
[21]HE F, MA X, MA K, et al. Multi-scale simulation of recrystallization during rolling of large 2219 aluminum alloy rings[J]. Metals, 2023, 13(3):448.
[22]孙梦黎,李姚君,丁佐军,等. 2A14铝合金的动态再结晶模型及热变形组织演变[J].金属热处理, 2018, 43(4):19-23.SUN Mengli, LI Yaojun, DING Zuojun, et al. Dynamic recrystallization model and microstructure evolution of 2A14 aluminum alloy under hot deformation[J]. Heat Treatment of Metals, 2018,43(4):19-23.
Basic Information:
China Classification Code:V263
Citation Information:
[1]XIONG Xian-qing,LIU Can,SU Hai ,et al.Optimization of forging process for aviation engine support rings oriented to mechanical performance enhancement[J].Journal of Plasticity Engineering().
Fund Information:
贵州省科技计划项目（黔科合平台人才-ZZSG [2024] 016）
2026-03-13
2026-03-13
2026-03-13