Effect of different drilling techniques on high-cycle fatigue behavior of nickel-based single-crystal superalloy with film cooling hole

The flat plate specimens of nickel-based single-crystal superalloy with 14 film cooling holes, which made by different drilling techniques, were used to study the high-cycle fatigue (HCF) properties at 980°C in an ambient atmosphere. At the same time, the electrical discharge machining (EDM) specime...

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Autores principales:	Zhang Zhijin, Zhang Mingqi
Formato:	article
Lenguaje:	EN
Publicado:	De Gruyter 2021
Materias:	single-crystal superalloy film-cooling hole high-cycle fatigue (hcf) Technology T Chemical technology TP1-1185 Chemicals: Manufacture, use, etc. TP200-248
Acceso en línea:	https://doaj.org/article/54c6e460348146d48690e2babed8f17a
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id	oai:doaj.org-article:54c6e460348146d48690e2babed8f17a
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spelling	oai:doaj.org-article:54c6e460348146d48690e2babed8f17a2021-12-05T14:10:50ZEffect of different drilling techniques on high-cycle fatigue behavior of nickel-based single-crystal superalloy with film cooling hole2191-032410.1515/htmp-2020-0072https://doaj.org/article/54c6e460348146d48690e2babed8f17a2021-04-01T00:00:00Zhttps://doi.org/10.1515/htmp-2020-0072https://doaj.org/toc/2191-0324The flat plate specimens of nickel-based single-crystal superalloy with 14 film cooling holes, which made by different drilling techniques, were used to study the high-cycle fatigue (HCF) properties at 980°C in an ambient atmosphere. At the same time, the electrical discharge machining (EDM) specimens with a single hole were also used to study the HCF properties under different temperatures. The hole and fracture micrographs were analyzed by scanning electron microscope. The results indicated that different drilling techniques have a great influence on HCF life. The fatigue limit of the millisecond laser drilling is 353 MPa, while the EDM is 359 MPa and the electro-stream machining (ESM) is 378 MPa. The fatigue life decreases gradually with the temperature increasing. The fatigue limit of EDM specimens with a single hole at 900°C, 980°C, and 1,050°C are 472, 430, and 293 MPa, respectively. The destruction of the specimens is a typical multisource rupture, and the fracture morphology includes three parts: the cracks sources around the film cooling hole, the propagation zone along the {001} planes, and instant rupture zone along the {111} planes.Zhang ZhijinZhang MingqiDe Gruyterarticlesingle-crystal superalloyfilm-cooling holehigh-cycle fatigue (hcf)TechnologyTChemical technologyTP1-1185Chemicals: Manufacture, use, etc.TP200-248ENHigh Temperature Materials and Processes, Vol 40, Iss 1, Pp 121-130 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	single-crystal superalloy film-cooling hole high-cycle fatigue (hcf) Technology T Chemical technology TP1-1185 Chemicals: Manufacture, use, etc. TP200-248
spellingShingle	single-crystal superalloy film-cooling hole high-cycle fatigue (hcf) Technology T Chemical technology TP1-1185 Chemicals: Manufacture, use, etc. TP200-248 Zhang Zhijin Zhang Mingqi Effect of different drilling techniques on high-cycle fatigue behavior of nickel-based single-crystal superalloy with film cooling hole
description	The flat plate specimens of nickel-based single-crystal superalloy with 14 film cooling holes, which made by different drilling techniques, were used to study the high-cycle fatigue (HCF) properties at 980°C in an ambient atmosphere. At the same time, the electrical discharge machining (EDM) specimens with a single hole were also used to study the HCF properties under different temperatures. The hole and fracture micrographs were analyzed by scanning electron microscope. The results indicated that different drilling techniques have a great influence on HCF life. The fatigue limit of the millisecond laser drilling is 353 MPa, while the EDM is 359 MPa and the electro-stream machining (ESM) is 378 MPa. The fatigue life decreases gradually with the temperature increasing. The fatigue limit of EDM specimens with a single hole at 900°C, 980°C, and 1,050°C are 472, 430, and 293 MPa, respectively. The destruction of the specimens is a typical multisource rupture, and the fracture morphology includes three parts: the cracks sources around the film cooling hole, the propagation zone along the {001} planes, and instant rupture zone along the {111} planes.
format	article
author	Zhang Zhijin Zhang Mingqi
author_facet	Zhang Zhijin Zhang Mingqi
author_sort	Zhang Zhijin
title	Effect of different drilling techniques on high-cycle fatigue behavior of nickel-based single-crystal superalloy with film cooling hole
title_short	Effect of different drilling techniques on high-cycle fatigue behavior of nickel-based single-crystal superalloy with film cooling hole
title_full	Effect of different drilling techniques on high-cycle fatigue behavior of nickel-based single-crystal superalloy with film cooling hole
title_fullStr	Effect of different drilling techniques on high-cycle fatigue behavior of nickel-based single-crystal superalloy with film cooling hole
title_full_unstemmed	Effect of different drilling techniques on high-cycle fatigue behavior of nickel-based single-crystal superalloy with film cooling hole
title_sort	effect of different drilling techniques on high-cycle fatigue behavior of nickel-based single-crystal superalloy with film cooling hole
publisher	De Gruyter
publishDate	2021
url	https://doaj.org/article/54c6e460348146d48690e2babed8f17a
work_keys_str_mv	AT zhangzhijin effectofdifferentdrillingtechniquesonhighcyclefatiguebehaviorofnickelbasedsinglecrystalsuperalloywithfilmcoolinghole AT zhangmingqi effectofdifferentdrillingtechniquesonhighcyclefatiguebehaviorofnickelbasedsinglecrystalsuperalloywithfilmcoolinghole
_version_	1718371666815352832

Effect of different drilling techniques on high-cycle fatigue behavior of nickel-based single-crystal superalloy with film cooling hole

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