锻压技术

7050铝合金大规格弧形带筋模锻件淬火及分步冷压缩残余应力有限元模拟

英文标题：Finite element simulation on quenching and stepwise cold compression residual stress of 7050 aluminum alloy large-scale arc die forgings with rib

作者：郑皓李晨张新全姬浩

单位：中国航空工业集团公司第一飞机设计研究院陕西西安 710089

关键词：7050铝合金弧形带筋模锻件淬火分步冷压缩残余应力

分类号：TG156

出版年,卷(期):页码：2025,50(6):187-195

摘要：

为研究工业化生产中大规格铝合金模锻件残余应力的大小及分布规律，采用Abaqus有限元软件，通过实验获得热物性参数及冷压缩实测数据，仿真模拟了7050铝合金大规格弧形带筋模锻件淬火过程中的残余应力大小和分布，采用5步冷压缩方法模拟了残余应力消减情况。结果表明，淬火后模锻件的心部受拉应力，外部受压应力；应力沿厚度方向呈近似的对称分层分布，两侧腹板部位的应力分布较均匀，沿长度方向接近筋条根部的残余应力高于远离根部的残余应力；5步冷压缩后，残余应力大大消减至100 MPa以下且分布均匀。最后，通过X射线衍射法对冷压缩后模锻件的上下表面和长度方向中间横截面进行残余应力检测，结果均低于200 MPa，表明了有限元模拟计算的准确性较好。

In order to study the value and distribution law of residual stress for large-scale aluminum alloy die forgings in industrial production, the thermophysical parameters and cold compression measured data were obtained by experiment, and the value and distribution of residual stress of 7050 aluminum alloy large-scale arc die forgings with rib during quenching were simulated by finite element software Abaqus. Then, the reduction of residual stress was simulated by five-step cold compression method. The results show that the core and surface of the die forgings is subjected to tensile stress and compressive stress after quenching,respectively. The stress is distributed symmetrically along the thickness direction, the stress distribution in the two sides of webs is more uniform, and the residual stress near the rib root is higher than that far away from the rib root. After five-step cold compression, the residual stress is greatly reduced to below 100 MPa and evenly distributed. The residual stresses on the upper and lower surfaces and the middle cross-sections along the length direction of cold-compressed die forgings are measured by X-ray diffraction, and all results are below 200 MPa, indicating that the accuracy of the finite element simulation calculation is better.

基金项目：

作者简介：郑皓（1990-），男，硕士，工程师，E-mail：540042936@qq.com

参考文献：

[1]Heinz A, Haszler A, Keidel C，et al. Recent development in aluminium alloys for aerospace applications[J]. Materials Science & Engineering A, 2000，280(1):102-107.

[2]姚诗杰，夏伟军，袁武华，等. 基于分段冷压法7050大型铝合金锻件残余应力的消减[J].机械工程材料，2018，42（1）：84-88.

Yao S J，Xia W J，Yuan W H，et al. Residual stress reduction of 7050 large-scale aluminum alloy forging based on segmented cold-pressing method[J]. Materials For Mechanical Engineering，2018，42（1）：84-88.

[3]Mei Z Y，Gao H，Wang Y Q，et al. Analyzing and controlling distortion of aircraft aluminium alloy structural part in NC machining[J]. Journal of Beijing University of Aeronautics and Astronautics，2009，35(2)：146-150.

[4]王洪斌，黄进峰，杨滨，等. Al-Zn-Mg-Cu系超高强度铝合金的研究现状与发展趋势[J].材料导报，2005，17（9）：1-4,15.

Wang H B，Huang J F，Yang B，et al. Current status and future directions of ultrahigh strength Al-Zn-Mg-Cu aluminum alloys [J]. Materials Reports，2005，17（9）：1-4,15.

[5]向彪，谢林军，张鹏，等. 回归双级再时效工艺对7050铝合金环形锻件组织性能的影响[J].锻压技术，2023，48（2）：210-214，223.

Xiang B，Xie L J，Zhang P，et al. Influence of regression and double-stage re-aging process on microstructure and properties for 7050 aluminum alloy ring forgings[J]. Forging & Stamping Technology，2023，48（2）：210-214,223.

[6]师晓宁,刘一笑.热处理工艺对挤压7175铝合金组织性能的影响[J].锻压技术,2024,49(2):234-240.

Shi X N，Liu Y X. Influence of heat treatment process on microstructure and properties of extruded 7175 aluminum alloy[J]. Forging & Stamping Technology，2024，49(2)：234-240.

[7]Yang W C，Ji S X，Zhang Q, et al. Investigation of mechanical and corrosion properties of an Al-Zn-Mg-Cu alloy under various ageing conditions and interface analysis of η′ precipitate[J]. Materials & Design, 2015, 85:752-761.

[8]何易鹏，吴运新，龚海，等. 7050铝合金T形锻件淬火应力评估[J].热加工工艺，2019，48（6）：215-218,222.

He Y P，Wu Y X，Gong H，et al. Quenching stress evaluation of 7050 aluminum alloy T-shaped forging[J]. Hot Working Technology，2019，48（6）：215-218,222.

[9]Canale L C F，Totten G. Overview of distortion and residual stress due to quench processing. Part I: Factors affecting quench distortion [J]. International Journal of Materials and Product Technology, 2005,24(1-4):4-52.

[10]代伟，易幼平，崔金栋，等. 冷压缩法消减7A85铝合金锻件淬火残余应力研究[J].中南大学学报（自然科学版），2015，46（5）：1609-1610.

Dai W，Yi Y P，Cui J D，et al. Reduction of quenching residual stress for 7A80 aluminum alloy forging by cold compression[J]. Journal of Central South University (Science and Technology)，2015，46（5）：1609-1610.

[11]Ceruttil X, Arsene S, Mocellin K. Prediction of machining quality due to the initial residual stress redistribution of aerospace structural parts made of low-density aluminum alloy rolled plates[J]. International Journal of Materials Forming, 2016,9（5）:677-690.

[12]刘嘉辰，王金亮，陈慧琴. 高强铝合金超厚板淬火残余应力及其冷压缩消除过程分析[J].轻合金加工技术，2014，42（9）：27-32,47.

Liu J C，Wang J L，Chen H Q. Analysis of residual stress in quenched high-strength aluminum alloy ultra-thick plates and their reduction through cold compression[J]. Light Alloy Fabrication Technology，2014，42（9）：27-32,47.

[13]蒋小娟，李坤宏，袁程，等. 大型非等厚7075铝合金自由锻件残余应力消减研究[J].兵器材料科学与工程，2022，45（5）：108-115.

Jiang X J，Li H K，Yuan C，et al. Residual stress reduction of large non-equal thickness free forging part of 7075 aluminum alloy[J]. Ordnance Material Science and Engineering，2022，45（5）：108-115.

[14]庄大勇,任大为,李洋，等.Al-8.79Zn-2.16Mg-2.11Cu-0.12Zr合金的本构关系和微观组织演变[J].锻压技术,2024,49(6):239-248.

Zhuang D Y，Ren D W，Li Y，et al. Constitutive relationship and microstructure evolution of Al-8.79Zn-2.16Mg-2.11Cu-0.12Zr alloy[J]. Forging & Stamping Technology，2024，49(6)：239-248.

[15]侯通.铝合金T形锻件固溶淬火过程数值模拟[D].秦皇岛：燕山大学，2016.

Hou T. Numerical Analysis of Quenching Process of Aluminum Alloy T-shaped Forgings[D].Qinhuangdao: Yanshan University，2016.

[16]黎燕,潘成海,滕海灏,等.基于修正J-C本构模型的固溶态7050铝合金中温变形行为研究[J].锻压技术,2024,49(6):221-226.

Li Y，Pan C H，Teng H H，et al. Study on middle temperature deformation behavior of solid-solution 7050 aluminum alloy based on modified J-C constitutive model [J]. Forging & Stamping Technology，2024，49(6)：221-226.

[17]Zhu K, Xiong B Q，Li X W, et al. Finite element simulation on residual stress during immersion quenching and pre-streching of Al7055 thick plates[J]. Materials Research Express, 2022,9(2):026525.

[18]周文彬，甘宛妮，杨小克，等.铝合金弹-塑性蠕变时效形性演变建模分析[J].锻压技术，2023，48(5)：227-235.

Zhou W B，Gan W N，Yang X K，et al. Modelling and analysis of evolution for deformation and property in elastic-plastic creep ageing of aluminium alloy [J]. Forging & Stamping Technology，2023，48(5)：227-235.

[19]吴道祥.7050铝合金H型长轴锻件成形工艺优化及淬火残余应力消除研究[D].重庆：重庆大学，2016.

Wu D X. Study on Processing Optimization and Quenching Residual Stress Elimination of Long Axis 7050 Aluminum Alloy Forgings with H-shape Section[D].Chongqing: Chongqing University，2016.

服务与反馈：

【文章下载】【加入收藏】