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考虑微观组织演化的DD6单晶高温合金蠕变剩余寿命预测

尤文超 王荣桥 胡殿印 赵炎 潘锦超 张斌 陈校生

尤文超, 王荣桥, 胡殿印, 等. 考虑微观组织演化的DD6单晶高温合金蠕变剩余寿命预测[J]. 航空动力学报, 2024, 39(9):20220628 doi: 10.13224/j.cnki.jasp.20220628
引用本文: 尤文超, 王荣桥, 胡殿印, 等. 考虑微观组织演化的DD6单晶高温合金蠕变剩余寿命预测[J]. 航空动力学报, 2024, 39(9):20220628 doi: 10.13224/j.cnki.jasp.20220628
YOU Wenchao, WANG Rongqiao, HU Dianyin, et al. Creep residual life prediction of DD6 single crystal superalloy considering microstructure evolution[J]. Journal of Aerospace Power, 2024, 39(9):20220628 doi: 10.13224/j.cnki.jasp.20220628
Citation: YOU Wenchao, WANG Rongqiao, HU Dianyin, et al. Creep residual life prediction of DD6 single crystal superalloy considering microstructure evolution[J]. Journal of Aerospace Power, 2024, 39(9):20220628 doi: 10.13224/j.cnki.jasp.20220628

考虑微观组织演化的DD6单晶高温合金蠕变剩余寿命预测

doi: 10.13224/j.cnki.jasp.20220628
基金项目: 国家自然科学基金(52022007,51875020); 国家科技重大专项(2017-Ⅳ-0004-0041, J2019-Ⅳ-0009-0077, J2019-Ⅳ-0016-0084)
详细信息
    作者简介:

    尤文超(1999-),男,硕士生,主要从事航空发动机热端部件结构强度相关方向的研究。E-mail:youwc@buaa.edu.cn

    通讯作者:

    胡殿印(1980-),女,教授,博士,研究领域为发动机结构强度及疲劳可靠性。E-mail:hdy@buaa.edu.cn

  • 中图分类号: V23

Creep residual life prediction of DD6 single crystal superalloy considering microstructure evolution

  • 摘要:

    以DD6单晶高温合金为研究对象,通过描述微观组织演化现象分析材料位错运动硬化机制,建立考虑微观组织演化的多尺度蠕变本构模型;并通过表征蠕变损伤状态,提出考虑蠕变损伤的材料蠕变剩余寿命预测方法。试验结果表明,本文提出的蠕变模型比θ映射模型模拟精度提高了57.6%,模型参数比K-R损伤模型减少了1/3;基于蠕变剩余寿命模型的预测结果的平均预测误差为5.59%,说明模型的有效性。

     

  • 图 1  γ/γ′相的胞元模型[9]

    Figure 1.  Unit cell model for γ/γ′ phases[9]

    图 2  1100 ℃下基体通道宽度演化

    Figure 2.  Evolution of substrate channel width at 1100 ℃

    图 3  基于本文模型的蠕变变形预测值与试验结果对比

    Figure 3.  Comparison of creep deformation based on article model and test results

    图 4  基于K-R损伤模型的蠕变变形预测值和试验结果对比

    Figure 4.  Comparison of creep deformation based on K-R damage model and test results

    图 5  基于θ映射模型的蠕变变形预测值和试验结果对比

    Figure 5.  Comparison of creep deformation based on θ projection method and test results

    图 6  残差平方和对比

    Figure 6.  Comparison of residual sum of squares

    图 7  蠕变剩余寿命预测和试验结果对比

    Figure 7.  Comparison of creep residual life prediction and test results

    表  1  蠕变本构模型参数

    Table  1.   Parameters of creep constitutive models

    模型 参数 数值
    粗化模型 ${\lambda _0}$/μm 0.518
    $B$/10−6 (μm3/h) 2.579
    $Q$/(kJ/mol) 268
    筏化模型 $A'$ 39.7354
    $n'$ 1.52
    流动法则 $K$/MPa 1000(980 ℃)
    93(1100 ℃)
    $n'$ 5.8(980 ℃)
    10.6(1100 ℃)
    位错硬化 $q$/GPa 3000(980 ℃)
    1000(1100 ℃)
    $k$ 2000(980 ℃)
    1710(1100 ℃)
    位错绕越 $b$/nm 0.255
    ${G_s}$/GPa 114
    $\theta $ 0.200(980 ℃)
    0.145(1100 ℃)
    $\kappa $ 2
    γ′相剪切 $w$ 1.31(980 ℃)
    0.80(1100 ℃)
    $ {\gamma _{{\rm{APB}}}} $/(J/m2 0.1
    蠕变损伤 ${\dot d_0}$ 0.90(980 ℃)
    0.27(1100 ℃)
    $\chi $ 1.88(980 ℃)
    2.50(1100 ℃)
    $\phi $ 0.5(980 ℃)
    0.33(1100 ℃)
    $ {\tau _{\rm{c}}} $/MPa 277.6(980 ℃)
    157.2(1100 ℃)
    $\beta $ 2.5
    下载: 导出CSV

    表  2  蠕变剩余寿命预测精度分析

    Table  2.   Accuracy of creep residual life prediction

    项目 r2 残差
    平方和/10−4
    试验
    结果/h
    模型
    预测值/h
    误差/%
    材料10.9787.2399.9101.61.7
    材料20.9931.5971.574.13.64
    材料30.9815.1730.634.111.44
    平均0.9844.665.59
    下载: 导出CSV
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  • 收稿日期:  2022-08-29
  • 网络出版日期:  2024-01-25

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