The effects of initial microstructure on the creep property of a 4th generation single crystal superalloy at mediate temperature and high stress

The creep properties at 800 °C and 735 MPa were examined in Ni-based single crystal superalloys (SCs) with different microstructure characteristics to systematically investigate the effects of initial microstructure on the creep property at mediate temperature and high stress. The creep life decreas...

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Main Authors: Huanchang Duan, Yuan Cheng, Xinbao Zhao, Lijie Qiao, Wanshun Xia, Quanzhao Yue, Jiachen Xu, Yuefeng Gu, Ze Zhang
Format: Article
Language:English
Published: Elsevier 2025-03-01
Series:Journal of Materials Research and Technology
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Online Access:http://www.sciencedirect.com/science/article/pii/S2238785425001255
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author Huanchang Duan
Yuan Cheng
Xinbao Zhao
Lijie Qiao
Wanshun Xia
Quanzhao Yue
Jiachen Xu
Yuefeng Gu
Ze Zhang
author_facet Huanchang Duan
Yuan Cheng
Xinbao Zhao
Lijie Qiao
Wanshun Xia
Quanzhao Yue
Jiachen Xu
Yuefeng Gu
Ze Zhang
author_sort Huanchang Duan
collection DOAJ
description The creep properties at 800 °C and 735 MPa were examined in Ni-based single crystal superalloys (SCs) with different microstructure characteristics to systematically investigate the effects of initial microstructure on the creep property at mediate temperature and high stress. The creep life decreased monotonically with the increasing primary aging temperature, which increased both the γ channel width and size of γ′ phase. The creep resistance was mainly determined by the γ channel width and stacking fault energy in γ′ phase. Narrow γ channels and low stacking fault energy in γ′ phase enhanced the creep resistance. Additionally, the fine γ′ particles embedded within the γ channel when aging at higher temperatures could not improve the creep performance significantly. The results provided a reference for the design of heat treatment procedure.
format Article
id doaj-art-145a14b9499e4c11a8eba686aa56e198
institution Kabale University
issn 2238-7854
language English
publishDate 2025-03-01
publisher Elsevier
record_format Article
series Journal of Materials Research and Technology
spelling doaj-art-145a14b9499e4c11a8eba686aa56e1982025-01-22T05:42:37ZengElsevierJournal of Materials Research and Technology2238-78542025-03-013513911399The effects of initial microstructure on the creep property of a 4th generation single crystal superalloy at mediate temperature and high stressHuanchang Duan0Yuan Cheng1Xinbao Zhao2Lijie Qiao3Wanshun Xia4Quanzhao Yue5Jiachen Xu6Yuefeng Gu7Ze Zhang8Institute of Superalloys Science and Technology, School of Materials Science and Engineering, Zhejiang University, Hangzhou, 310027, Zhejiang, ChinaInstitute of Superalloys Science and Technology, School of Materials Science and Engineering, Zhejiang University, Hangzhou, 310027, Zhejiang, ChinaInstitute of Superalloys Science and Technology, School of Materials Science and Engineering, Zhejiang University, Hangzhou, 310027, Zhejiang, China; State Key Laboratory of Silicon and Advanced Semiconductor Materials, School of Materials Science and Engineering, Zhejiang University, Hangzhou, 310027, Zhejiang, China; Corresponding author. Institute of Superalloys Science and Technology, School of Materials Science and Engineering, Zhejiang University, Hangzhou, 310027, Zhejiang, China.Institute of Superalloys Science and Technology, School of Materials Science and Engineering, Zhejiang University, Hangzhou, 310027, Zhejiang, China; Huadian Electric Power Research Institute Co., Ltd, Hangzhou, 310030, Zhejiang, ChinaInstitute of Superalloys Science and Technology, School of Materials Science and Engineering, Zhejiang University, Hangzhou, 310027, Zhejiang, ChinaInstitute of Superalloys Science and Technology, School of Materials Science and Engineering, Zhejiang University, Hangzhou, 310027, Zhejiang, ChinaInstitute of Superalloys Science and Technology, School of Materials Science and Engineering, Zhejiang University, Hangzhou, 310027, Zhejiang, ChinaInstitute of Superalloys Science and Technology, School of Materials Science and Engineering, Zhejiang University, Hangzhou, 310027, Zhejiang, China; State Key Laboratory of Silicon and Advanced Semiconductor Materials, School of Materials Science and Engineering, Zhejiang University, Hangzhou, 310027, Zhejiang, China; Corresponding author. Institute of Superalloys Science and Technology, School of Materials Science and Engineering, Zhejiang University, Hangzhou, 310027, Zhejiang, China.Institute of Superalloys Science and Technology, School of Materials Science and Engineering, Zhejiang University, Hangzhou, 310027, Zhejiang, China; State Key Laboratory of Silicon and Advanced Semiconductor Materials, School of Materials Science and Engineering, Zhejiang University, Hangzhou, 310027, Zhejiang, ChinaThe creep properties at 800 °C and 735 MPa were examined in Ni-based single crystal superalloys (SCs) with different microstructure characteristics to systematically investigate the effects of initial microstructure on the creep property at mediate temperature and high stress. The creep life decreased monotonically with the increasing primary aging temperature, which increased both the γ channel width and size of γ′ phase. The creep resistance was mainly determined by the γ channel width and stacking fault energy in γ′ phase. Narrow γ channels and low stacking fault energy in γ′ phase enhanced the creep resistance. Additionally, the fine γ′ particles embedded within the γ channel when aging at higher temperatures could not improve the creep performance significantly. The results provided a reference for the design of heat treatment procedure.http://www.sciencedirect.com/science/article/pii/S2238785425001255Primary aging temperatureCreep propertyγ′/γ microstructureDeformation mechanism
spellingShingle Huanchang Duan
Yuan Cheng
Xinbao Zhao
Lijie Qiao
Wanshun Xia
Quanzhao Yue
Jiachen Xu
Yuefeng Gu
Ze Zhang
The effects of initial microstructure on the creep property of a 4th generation single crystal superalloy at mediate temperature and high stress
Journal of Materials Research and Technology
Primary aging temperature
Creep property
γ′/γ microstructure
Deformation mechanism
title The effects of initial microstructure on the creep property of a 4th generation single crystal superalloy at mediate temperature and high stress
title_full The effects of initial microstructure on the creep property of a 4th generation single crystal superalloy at mediate temperature and high stress
title_fullStr The effects of initial microstructure on the creep property of a 4th generation single crystal superalloy at mediate temperature and high stress
title_full_unstemmed The effects of initial microstructure on the creep property of a 4th generation single crystal superalloy at mediate temperature and high stress
title_short The effects of initial microstructure on the creep property of a 4th generation single crystal superalloy at mediate temperature and high stress
title_sort effects of initial microstructure on the creep property of a 4th generation single crystal superalloy at mediate temperature and high stress
topic Primary aging temperature
Creep property
γ′/γ microstructure
Deformation mechanism
url http://www.sciencedirect.com/science/article/pii/S2238785425001255
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