Topologically inverse microstructure in single-crystal superalloys: microstructural stability and properties at ultrahigh temperature

Topological phase inversion, in which γ'-precipitate becomes topological matrix phase, is a typical ‘detrimental’ microstructural degradation in Ni-based single-crystal superalloys. Here, a topologically inverse structure without service-induced damages is proposed. This structure exhibits exce...

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Autores principales:	Yi Ru, Bin Hu, Wenyue Zhao, Heng Zhang, Yanling Pei, Shusuo Li, Shengkai Gong, Huibin Xu
Formato:	article
Lenguaje:	EN
Publicado:	Taylor & Francis Group 2021
Materias:	single-crystal superalloy topological phase inversion ultrahigh temperature property microstructural stability two-phase interface Materials of engineering and construction. Mechanics of materials TA401-492
Acceso en línea:	https://doaj.org/article/97d75ed99ec74246987cd73dc3d24090
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spelling	oai:doaj.org-article:97d75ed99ec74246987cd73dc3d240902021-11-04T15:51:55ZTopologically inverse microstructure in single-crystal superalloys: microstructural stability and properties at ultrahigh temperature2166-383110.1080/21663831.2021.1982785https://doaj.org/article/97d75ed99ec74246987cd73dc3d240902021-12-01T00:00:00Zhttp://dx.doi.org/10.1080/21663831.2021.1982785https://doaj.org/toc/2166-3831Topological phase inversion, in which γ'-precipitate becomes topological matrix phase, is a typical ‘detrimental’ microstructural degradation in Ni-based single-crystal superalloys. Here, a topologically inverse structure without service-induced damages is proposed. This structure exhibits excellent stress rupture properties at 1200°C and great microstructural stability, characterized by high, steady two-phase interface density. The relationship of the interface density to microscopic dislocation motion and macroscopic plastic deformation has been established, which reveals possible strengthening effect. These results will help understanding the benefit from this ‘degraded’ but quite stable microstructure and guide microstructure tuning against long-termed heat-resisted service.Yi RuBin HuWenyue ZhaoHeng ZhangYanling PeiShusuo LiShengkai GongHuibin XuTaylor & Francis Grouparticlesingle-crystal superalloytopological phase inversionultrahigh temperature propertymicrostructural stabilitytwo-phase interfaceMaterials of engineering and construction. Mechanics of materialsTA401-492ENMaterials Research Letters, Vol 9, Iss 12, Pp 497-506 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	single-crystal superalloy topological phase inversion ultrahigh temperature property microstructural stability two-phase interface Materials of engineering and construction. Mechanics of materials TA401-492
spellingShingle	single-crystal superalloy topological phase inversion ultrahigh temperature property microstructural stability two-phase interface Materials of engineering and construction. Mechanics of materials TA401-492 Yi Ru Bin Hu Wenyue Zhao Heng Zhang Yanling Pei Shusuo Li Shengkai Gong Huibin Xu Topologically inverse microstructure in single-crystal superalloys: microstructural stability and properties at ultrahigh temperature
description	Topological phase inversion, in which γ'-precipitate becomes topological matrix phase, is a typical ‘detrimental’ microstructural degradation in Ni-based single-crystal superalloys. Here, a topologically inverse structure without service-induced damages is proposed. This structure exhibits excellent stress rupture properties at 1200°C and great microstructural stability, characterized by high, steady two-phase interface density. The relationship of the interface density to microscopic dislocation motion and macroscopic plastic deformation has been established, which reveals possible strengthening effect. These results will help understanding the benefit from this ‘degraded’ but quite stable microstructure and guide microstructure tuning against long-termed heat-resisted service.
format	article
author	Yi Ru Bin Hu Wenyue Zhao Heng Zhang Yanling Pei Shusuo Li Shengkai Gong Huibin Xu
author_facet	Yi Ru Bin Hu Wenyue Zhao Heng Zhang Yanling Pei Shusuo Li Shengkai Gong Huibin Xu
author_sort	Yi Ru
title	Topologically inverse microstructure in single-crystal superalloys: microstructural stability and properties at ultrahigh temperature
title_short	Topologically inverse microstructure in single-crystal superalloys: microstructural stability and properties at ultrahigh temperature
title_full	Topologically inverse microstructure in single-crystal superalloys: microstructural stability and properties at ultrahigh temperature
title_fullStr	Topologically inverse microstructure in single-crystal superalloys: microstructural stability and properties at ultrahigh temperature
title_full_unstemmed	Topologically inverse microstructure in single-crystal superalloys: microstructural stability and properties at ultrahigh temperature
title_sort	topologically inverse microstructure in single-crystal superalloys: microstructural stability and properties at ultrahigh temperature
publisher	Taylor & Francis Group
publishDate	2021
url	https://doaj.org/article/97d75ed99ec74246987cd73dc3d24090
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Topologically inverse microstructure in single-crystal superalloys: microstructural stability and properties at ultrahigh temperature

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