Quantitative Characterization of the <i>γ</i>’ Phase Distribution in the Large-Scale Area of the Second-Generation Nickel-Based Single Crystal Blade DD5

Nickel-based single crystal superalloy blades have excellent high-temperature performance as the hot end part of the aero-engine turbine. The most important strengthening phase in the single crystal blade is the <i>γ</i>’ phase, and its morphology and size distribution directly affect th...

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Autores principales:	Weihao Wan, Dongling Li, Qingqing Zhou, Qiang Zeng, Xin Xue, Hui Shi, Haizhou Wang
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	single crystal superalloy blade DD5 <i>γ</i>’ phase quantitative characterization U-Net Crystallography QD901-999
Acceso en línea:	https://doaj.org/article/f0c96b326c1f49b48cf43887e1910282
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spelling	oai:doaj.org-article:f0c96b326c1f49b48cf43887e19102822021-11-25T17:19:22ZQuantitative Characterization of the <i>γ</i>’ Phase Distribution in the Large-Scale Area of the Second-Generation Nickel-Based Single Crystal Blade DD510.3390/cryst111113992073-4352https://doaj.org/article/f0c96b326c1f49b48cf43887e19102822021-11-01T00:00:00Zhttps://www.mdpi.com/2073-4352/11/11/1399https://doaj.org/toc/2073-4352Nickel-based single crystal superalloy blades have excellent high-temperature performance as the hot end part of the aero-engine turbine. The most important strengthening phase in the single crystal blade is the <i>γ</i>’ phase, and its morphology and size distribution directly affect the high temperature performance of the single crystal blade. In this work, scanning electron microscopy (SEM) was used to obtain the microscopic images of the <i>γ</i>’ phase in multiple large continuous fields of view in the transverse sections of single crystal blades, and the quantitative statistical characterization of the <i>γ</i>’ phase was performed by image segmentation method based on deep learning. The 20 μm × 20 μm region was selected from the primary dendrite arm, the secondary dendrite arm, and the interdendrite to statistically analyze the <i>γ</i>’ phases. The statistical results show that the average size of the <i>γ</i>’ phase at the position of the interdendrite is significantly larger than the average size of the <i>γ</i>’ phase at the position of the dendrite; the sizes of the <i>γ</i>’ phase at the primary dendrite arm, the secondary dendrite arm and the interdendrite all obey the normal distribution; about 3.17 × 10<sup>7</sup> <i>γ</i>’ phases are counted in 20 positions in the 5 transverse sections of the single crystal blade in a total area of 5 mm<sup>2</sup>, and the size, geometric morphology and area fraction of all <i>γ</i>’ phases are respectively counted. In this work, the quantitative parameters of the <i>γ</i>’ phases at 4 different positions of the section of the single crystal superalloy DD5 blade were compared, the size and area fraction of the <i>γ</i>’ phases at the leading edge and the trailing edge were smaller, and the shape of the <i>γ</i>’ phase of the leading edge and the trailing edge is closer to the cube.Weihao WanDongling LiQingqing ZhouQiang ZengXin XueHui ShiHaizhou WangMDPI AGarticlesingle crystal superalloy bladeDD5<i>γ</i>’ phasequantitative characterizationU-NetCrystallographyQD901-999ENCrystals, Vol 11, Iss 1399, p 1399 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	single crystal superalloy blade DD5 <i>γ</i>’ phase quantitative characterization U-Net Crystallography QD901-999
spellingShingle	single crystal superalloy blade DD5 <i>γ</i>’ phase quantitative characterization U-Net Crystallography QD901-999 Weihao Wan Dongling Li Qingqing Zhou Qiang Zeng Xin Xue Hui Shi Haizhou Wang Quantitative Characterization of the <i>γ</i>’ Phase Distribution in the Large-Scale Area of the Second-Generation Nickel-Based Single Crystal Blade DD5
description	Nickel-based single crystal superalloy blades have excellent high-temperature performance as the hot end part of the aero-engine turbine. The most important strengthening phase in the single crystal blade is the <i>γ</i>’ phase, and its morphology and size distribution directly affect the high temperature performance of the single crystal blade. In this work, scanning electron microscopy (SEM) was used to obtain the microscopic images of the <i>γ</i>’ phase in multiple large continuous fields of view in the transverse sections of single crystal blades, and the quantitative statistical characterization of the <i>γ</i>’ phase was performed by image segmentation method based on deep learning. The 20 μm × 20 μm region was selected from the primary dendrite arm, the secondary dendrite arm, and the interdendrite to statistically analyze the <i>γ</i>’ phases. The statistical results show that the average size of the <i>γ</i>’ phase at the position of the interdendrite is significantly larger than the average size of the <i>γ</i>’ phase at the position of the dendrite; the sizes of the <i>γ</i>’ phase at the primary dendrite arm, the secondary dendrite arm and the interdendrite all obey the normal distribution; about 3.17 × 10<sup>7</sup> <i>γ</i>’ phases are counted in 20 positions in the 5 transverse sections of the single crystal blade in a total area of 5 mm<sup>2</sup>, and the size, geometric morphology and area fraction of all <i>γ</i>’ phases are respectively counted. In this work, the quantitative parameters of the <i>γ</i>’ phases at 4 different positions of the section of the single crystal superalloy DD5 blade were compared, the size and area fraction of the <i>γ</i>’ phases at the leading edge and the trailing edge were smaller, and the shape of the <i>γ</i>’ phase of the leading edge and the trailing edge is closer to the cube.
format	article
author	Weihao Wan Dongling Li Qingqing Zhou Qiang Zeng Xin Xue Hui Shi Haizhou Wang
author_facet	Weihao Wan Dongling Li Qingqing Zhou Qiang Zeng Xin Xue Hui Shi Haizhou Wang
author_sort	Weihao Wan
title	Quantitative Characterization of the <i>γ</i>’ Phase Distribution in the Large-Scale Area of the Second-Generation Nickel-Based Single Crystal Blade DD5
title_short	Quantitative Characterization of the <i>γ</i>’ Phase Distribution in the Large-Scale Area of the Second-Generation Nickel-Based Single Crystal Blade DD5
title_full	Quantitative Characterization of the <i>γ</i>’ Phase Distribution in the Large-Scale Area of the Second-Generation Nickel-Based Single Crystal Blade DD5
title_fullStr	Quantitative Characterization of the <i>γ</i>’ Phase Distribution in the Large-Scale Area of the Second-Generation Nickel-Based Single Crystal Blade DD5
title_full_unstemmed	Quantitative Characterization of the <i>γ</i>’ Phase Distribution in the Large-Scale Area of the Second-Generation Nickel-Based Single Crystal Blade DD5
title_sort	quantitative characterization of the <i>γ</i>’ phase distribution in the large-scale area of the second-generation nickel-based single crystal blade dd5
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/f0c96b326c1f49b48cf43887e1910282
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Quantitative Characterization of the <i>γ</i>’ Phase Distribution in the Large-Scale Area of the Second-Generation Nickel-Based Single Crystal Blade DD5

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