Directionally solidified superalloys

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August undefined, 2024

WebThe nickel-base superalloy composition may be used in single-crystal or directionally solidified superalloy articles such as high pressure turbine blades for a gas turbine engine.，下面是SUPER OXIDATION AND CYCLIC DAMAGE RESISTANT NICKEL-BASE SUPERALLOY AND ARTICLES FORMED THEREFROM专利的具体信息内容。 WebA low-cost process for casting directionally-solidified CDS) turbine blades of high stress-rupture strength has been successfully developed. The process employs an exothermically heated mold to ... ature of nickel base superalloys. Solidification initiates at the circular “starters” that contact the chill. A sorting out process to select ...

Solute segregation behavior of nickel-based single crystal …

WebJan 1, 1990 · PDF On Jan 1, 1990, K. Harris and others published Directionally solidified and single-crystal superalloys Find, read and cite all the research you need on … WebFeb 1, 2024 · The total content of Al and Ti in advanced Ni-based wrought superalloys is up to 7.5wt.%, which makes it easier to form harmful nonequilibrium eutectic (γ+γ′) and η phase. It has been reported that the addition of certain amount of Zr can modify precipitation of the nonequilibrium phases obviously, but the mechanism is still controversial. bama bucks alabama

High-temperature oxidation behavior of a directionally …

WebJan 10, 2024 · Wu et al. [ 19] found the formation of lamellar borides at grain boundaries in the directionally solidified superalloys with 0.03 wt. % boron, which would make the interfaces brittle and decrease the rupture life of material. WebMar 21, 2024 · The processes that limit repeated rejuvenation of directionally solidified GTD444 and single-crystal René N5 (SX) alloys have been studied in detail. A rejuvenation cycle includes a rejuvenation heat treatment and/or small-scale material removal, followed by creep or fatigue testing. WebJun 15, 2004 · Directional solidification. 1. Introduction. The development of single crystal technology over the past two decades for the production of blades and vanes from nickel … bama bucks menu sardis al

High temperature tensile deformation of a directionally solidified ...

Initial dynamics of irregular eutectic growth under directional ...

WebJan 1, 1990 · The more recent developments concern the manufacturing of single-grain parts made of nickel base superalloys with large amount of the γ′ hardening phase. … WebApr 12, 2024 · The tensile property of Ni-based superalloys is closely related to the amount, size, and distribution of γ′-phase and carbides. To further clarify the tensile deformation mechanism of the CM247LC alloy, this study investigated its solidification characteristics and directionally-solidified and heat-treated microstructure. armband mit yin yang anhängerWebKeywords: Directional solidification, Hot tearing, Ni-based superalloys Abstract The hot tearing mechanism has been studied in directionally solidified (DS) Ni-based superalloys with columnar grain structures. Castability tests and optical metallography of quenched samples were employed to explore the effect of microstructural armband mit gravur damen pandora

"WebJan 1, 2024 · Directional solidified (DS) superalloys Creep resistance of superalloys is increased if manufactured by the DS method. This is because of grain boundaries being formed vertically and hence they are less susceptible to the centrifugal force of the turbine blades. Polycrystalline alloy Mar-M200 is directionally solidified to form Mar-M200 Hf … " - Directionally solidified superalloys

Directionally solidified superalloys

Nickel Based Superalloys - University of Cambridge

WebDIRECTIONALLY SOLIDIFIED MATERIALS: NICKEL-BASE SUPERALLOYSFOR GASTURBINES ... KEYWORDSDirectional solidification, nickel base superalloys, microstructures, high temperature WebMICROSTRUCTURE-PROPERTY RELATIONSHIPS IN DIRECTIONALLY SOLIDIFIED SINGLE CRYSTAL NICKEL-BASE SUPERALLOYS Rebecca A. MacKay and Michael …

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WebNov 29, 2011 · To understand freckling under industrial conditions, several directional solidification experiments were carried out in a production-scale vacuum Bridgman furnace. The superalloy used is CMSX-4 (Cr 6.5, Co 9.0, Mo 0.6, W 6.0, Al 5.6, Ta 6.5, Ti 1.0, Re 3.0, and Hf 0.1 in wt pct) because it is a typical freckle-prone superalloy. [ 27] WebJan 11, 2024 · Nickel-base superalloys exhibit high strength, good resistance to corrosion and oxidation, long fatigue life and is capable of withstanding high temperatures for extended periods of time. Consequently, Ni-base superalloys (NBSAs) are highly suitable as blading materials.

WebMar 26, 2024 · This special topic on Advancing Development and Application of Superalloys covers a range of sub-topics including mechanical performance, corrosion resistance, processing and advanced manufacturing techniques, which were submitted by research groups from industry, national laboratories and universities. WebDec 1, 2024 · The directionally solidified (DS) and single crystal (SC) nickel-based superalloys have become the most widely used materials for turbine blades of aero …

WebSep 24, 2024 · In this context, the present study highlights the solidification mechanism of several Ni-based superalloys by conducting experiments using a modified, laboratory … WebThe present conference discusses topics in P/M and wrought superalloys, alternatives to superalloys, directionally-solidified and single-crystal alloys, advancements in …

WebMar 27, 2012 · Directionally solidified superalloys have been extensively used as turbine blade materials to improve creep-rupture and thermal fatigue performances. Turbine …

WebInfluence of Secondary Orientation on Competitive Grain Growth of Nickel-Based Superalloys[J]. 金属学报, 2024, 56(7): 969-978. ... Effect of Longitudinal Static Magnetic Field on the Columnar to Equiaxed Transition in Directionally Solidified GCr15 Bearing Steel[J]. 金属学报, 2024, 54(5): 801-808. [15] armband mit namen silberWebApr 2, 2024 · Directionally solidified nickel based superalloy IC10, which has a high service temperature higher than 1100 °C [ 14, 15 ], was used in this study. The cast ingot was cut into specimens with dimensions of 70 mm × 24 mm × 4 mm, which were than used as substrates in laser metal deposition (LMD). bama bucks restaurant boaz alWebother directionally solidified nickel base superalloys [S]. Fig 5 shows the stress rupture resistence of CM247LC DS for the L and LT studied orientations in comparison with the ODS MA6000 with equivalent orientations and with the IN738LC conventionally cast [6-81 While it is evident the better creep bama bucks restaurant sardisWebApr 11, 2024 · The solute segregation behavior of Ni-based single crystal (SX) superalloys directionally solidified over wide ranges of solidification rates under various intensities of transverse static magnetic field (TSMF, 0–0.7 T) is systematically investigated. The results show that the influence of TSMF on solute segregation depends on magnetic field ... armband mit namen mannWebMar 4, 2010 · The performance of heavy duty gas turbines is closely related to the material capability of the components of the first turbine stage. In modern gas turbines single crystal (SX) and directionally solidified (DS) nickel superalloys are applied, which, compared with their conventionally cast version, hold a higher cyclic life and a significantly … armband mit namen perlenWebApr 12, 2024 · The tensile property of Ni-based superalloys is closely related to the amount, size, and distribution of γ′-phase and carbides. To further clarify the tensile … bama bucks menu alWebEffect of V on Microstructure and High Temperature Creep Properties of Diretional Solidified Nickel-base Superalloys. Chinese Journal of Materials Research, 2016, 30(6): 465-472. ... M. Maldini, Creep rupture behavior of a directionally solidified nickel base superalloy, Metallurgical and Materials Transactions A, 32(5), 1103(2001) ... bama bucks restaurant