Production of net-shape static parts by direct HIPing of nickel base superalloy prealloyed powders
TLDR
In this article, the effects of net shape surfaces and surface conditioning have been investigated for static parts of aero-turboengines and space propulsion systems using HIPing of nickel base superalloys prealloyed powders.Abstract:
In order to reduce costs and increase the operating temperatures in aero-turboengines and space propulsion systems, net-shape or near net-shape production processes have been developed for static parts through HIPing (Hot Isostatic Pressing) of nickel base superalloys prealloyed powders. The presented results hereafter are related to the manufacturing processes and the mechanical properties (tensile, creep and LCF) characterisation. The effects of net shape surfaces and of surface conditioning have been investigated too. Examples of actual parts (CFM56 turbine casing and Vulcain rocket engine gas generator) illustrate the presentation. This study has confirmed the interest of this production route and future potential for development.read more
Citations
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Thermodynamic analysis of carbide precipitation and effect of its configuration on creep properties of FGH95 powder nickel-based superalloy
TL;DR: In this paper, the precipitation behavior of carbides and the effect of its configuration on the creep properties of FGH95 alloy were investigated by means of heat treatment at various regimes, creep property measurement, microstructure observation and thermodynamic analysis.
Journal ArticleDOI
The effect of hot isostatic pressing and heat treatment on the microstructure and properties of EP741NP nickel alloy manufactured by laser powder bed fusion
Zh. A. Sentyurina,F.A. Baskov,Pavel Loginov,Yu.Yu. Kaplanskii,A.V. Mishukov,I.A. Logachev,M. Ya. Bychkova,Evgeny A. Levashov,A. I. Logacheva +8 more
TL;DR: In this article, the effect of hot isostatic pressing (HIP) and heat treatment (HT) on the residual porosity, microstructure, and mechanical properties of the heat-resistant EP741NP nickel alloy produced by laser powder bed fusion (LPBF) was studied by X-ray powder diffraction, optical microscopy, as well as scanning and transmission electron microscopy.
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Net shape HIPping of Ni-superalloy: Study of the interface between the capsule and the alloy
Emilio Bassini,Valeria Vola,Massimo Lorusso,R. Ghisleni,Mariangela Lombardi,Sara Biamino,Daniele Ugues,Gianfranco Vallillo,B. Picqué +8 more
TL;DR: In this paper, the authors investigated the effects of the elemental diffusion during the consolidation of Astroloy powders in Hot Isostatic Pressing (HIP) processes, which is considered a near net or net shape forming technology, depending on the overstock thickness.
Journal ArticleDOI
Simultaneously enhanced strength and ductility of FGH4097 nickel-based alloy via a novel hot isostatic pressing strategy
Chao Cai,Chao Cai,Kunkun Pan,Teng Qing,Xiangyun Gao,Bo Song,Jie Liu,Qingsong Wei,Kun Zhou,Yusheng Shi +9 more
TL;DR: In this article, a novel asynchronous loading HIP strategy, elevating temperature to the highest value first and then raising pressure, was proposed for FGH4097 to overcome the industrial challenge.
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Influence of solutioning on microstructure and hardness of hot isostatically pressed Astroloy
Emilio Bassini,Giulio Marchese,Giulio Cattano,Mariangela Lombardi,Sara Biamino,Daniele Ugues,Gianfranco Vallillo,B. Picqué +7 more
TL;DR: The influence of solutioning treatment on Astroloy fabricated via Hot Isostatic Pressing has been investigated in this article, where both sub-and super-solvus solutioning treatments were performed, gradually increasing the test temperature from 1115 to 1200°C in order to cross the ǫ solvus.
References
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High performance and high complexity net shape parts for gas turbines: the ISOPREC® powder metallurgy process
TL;DR: The ISOPREC process as discussed by the authors is a powder metallurgy process in which a highly sophisticated mold is filled with powder and further densified through a HIP cycle, and a net shape part is obtained.
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Evolution of PM nickel base superalloy processes and products
TL;DR: In this paper, the evolution of design principles and better evaluation of the impact of cleanliness has led to an evolution of metallurgy (grades and microstructure) and processes.
Journal ArticleDOI
Le procédé de mise en forme ISOPREC
TL;DR: ISOPREC® as discussed by the authors is a procede de metallurgie des poudres dans lequel un moule particulierement elabore est rempli de poudre puis densifie en Compression Isostatique a Chaud (C.I.C.).