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

被引：0

作者：

You, Wenchao ^{[1
]}

Wang, Rongqiao ^{[1
,2
,3
]}

Hu, Dianyin ^{[2
,3
,4
]}

Zhao, Yan ^{[4
]}

Pan, Jinchao ^{[1
]}

Zhang, Bin ^{[2
,3
]}

Chen, Xiaosheng ^{[2
,3
,4
]}

机构：

[1] School of Energy and Power Engineering, Beihang University, Beijing

[2] United Research Center of Mid-Small Aero-Engine, Beijing

[3] Beijing Key Laboratory of Aero-Engine Structure and Strength, Beihang University, Beijing

[4] Research Institute of Aero-Engine, Beihang University, Beijing

来源：

Hangkong Dongli Xuebao/Journal of Aerospace Power | 2024年 / 39卷 / 09期

关键词：

constitutive model; creep; DD6 single crystal superalloy; microstructure evolution; residual life;

D O I：

10.13224/j.cnki.jasp.20220628

中图分类号：

学科分类号：

摘要：

DD6 single crystal superalloy was taken as the research object to analyse the hardening mechanism of material dislocation movement by describing the microstructure evolution phenomenon,and a multi-scale creep constitutive model considering microstructure evolution was established; then a creep residual life prediction method considering the creep damage by characterizing the creep damage state was proposed. The experimental results showed that the creep model improved the simulation accuracy by 57.6% compared with the θ projection method,and the model parameters were reduced by 1/3 compared with the K-R damage model. The average prediction error of the creep residual life model prediction results was only 5.59%,indicating the validity of the model. © 2024 Beijing University of Aeronautics and Astronautics (BUAA). All rights reserved.

引用

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