Hot Deformation Behavior and Processing Map of GH901 Superalloy

During the forging process GH901 superalloys easily produce cracks and defects, such as coarse crystals in tissues, which affect the performance of the alloy. Using GH901 nickel-based alloy, high-temperature compression tests at deformation temperatures of 990, 1040, 1090 and 1140 °C were carried ou...

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Autores principales:	Rui Ma, Lulu Li, Ruixue Zhai, Xiangnan Meng, Jun Zhao
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	GH901 superalloy hot deformation behavior processing map isothermal forging Mining engineering. Metallurgy TN1-997
Acceso en línea:	https://doaj.org/article/5e77610a7f5145fcab1255620429a275
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spelling	oai:doaj.org-article:5e77610a7f5145fcab1255620429a2752021-11-25T18:22:08ZHot Deformation Behavior and Processing Map of GH901 Superalloy10.3390/met111118082075-4701https://doaj.org/article/5e77610a7f5145fcab1255620429a2752021-11-01T00:00:00Zhttps://www.mdpi.com/2075-4701/11/11/1808https://doaj.org/toc/2075-4701During the forging process GH901 superalloys easily produce cracks and defects, such as coarse crystals in tissues, which affect the performance of the alloy. Using GH901 nickel-based alloy, high-temperature compression tests at deformation temperatures of 990, 1040, 1090 and 1140 °C were carried out in a Thermecmastor-Z thermal simulator, with strain rates 0.001, 0.01, 0.1 and 1 s<sup>−1</sup>. Next, the isothermal forging process of a GH901 disc was simulated using DEFORM finite element simulation software. The results showed that with the increase in deformation temperatures and the decrease in strain rates, the flow stress clearly decreased. The flow stress constitutive model of GH901 superalloy under <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><msub><mi>ε</mi><mrow><mn>0.3</mn></mrow></msub></mrow></semantics></math></inline-formula> and the flow stress constitutive model for strain compensation were obtained. The processing map was built, and a reasonable range of thermal processing was obtained. Meanwhile, the isothermal forging simulation verified the reliability of the thermal processing range of the alloy.Rui MaLulu LiRuixue ZhaiXiangnan MengJun ZhaoMDPI AGarticleGH901 superalloyhot deformation behaviorprocessing mapisothermal forgingMining engineering. MetallurgyTN1-997ENMetals, Vol 11, Iss 1808, p 1808 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	GH901 superalloy hot deformation behavior processing map isothermal forging Mining engineering. Metallurgy TN1-997
spellingShingle	GH901 superalloy hot deformation behavior processing map isothermal forging Mining engineering. Metallurgy TN1-997 Rui Ma Lulu Li Ruixue Zhai Xiangnan Meng Jun Zhao Hot Deformation Behavior and Processing Map of GH901 Superalloy
description	During the forging process GH901 superalloys easily produce cracks and defects, such as coarse crystals in tissues, which affect the performance of the alloy. Using GH901 nickel-based alloy, high-temperature compression tests at deformation temperatures of 990, 1040, 1090 and 1140 °C were carried out in a Thermecmastor-Z thermal simulator, with strain rates 0.001, 0.01, 0.1 and 1 s<sup>−1</sup>. Next, the isothermal forging process of a GH901 disc was simulated using DEFORM finite element simulation software. The results showed that with the increase in deformation temperatures and the decrease in strain rates, the flow stress clearly decreased. The flow stress constitutive model of GH901 superalloy under <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><msub><mi>ε</mi><mrow><mn>0.3</mn></mrow></msub></mrow></semantics></math></inline-formula> and the flow stress constitutive model for strain compensation were obtained. The processing map was built, and a reasonable range of thermal processing was obtained. Meanwhile, the isothermal forging simulation verified the reliability of the thermal processing range of the alloy.
format	article
author	Rui Ma Lulu Li Ruixue Zhai Xiangnan Meng Jun Zhao
author_facet	Rui Ma Lulu Li Ruixue Zhai Xiangnan Meng Jun Zhao
author_sort	Rui Ma
title	Hot Deformation Behavior and Processing Map of GH901 Superalloy
title_short	Hot Deformation Behavior and Processing Map of GH901 Superalloy
title_full	Hot Deformation Behavior and Processing Map of GH901 Superalloy
title_fullStr	Hot Deformation Behavior and Processing Map of GH901 Superalloy
title_full_unstemmed	Hot Deformation Behavior and Processing Map of GH901 Superalloy
title_sort	hot deformation behavior and processing map of gh901 superalloy
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/5e77610a7f5145fcab1255620429a275
work_keys_str_mv	AT ruima hotdeformationbehaviorandprocessingmapofgh901superalloy AT lululi hotdeformationbehaviorandprocessingmapofgh901superalloy AT ruixuezhai hotdeformationbehaviorandprocessingmapofgh901superalloy AT xiangnanmeng hotdeformationbehaviorandprocessingmapofgh901superalloy AT junzhao hotdeformationbehaviorandprocessingmapofgh901superalloy
_version_	1718411259783675904

Hot Deformation Behavior and Processing Map of GH901 Superalloy

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