Effect of HIP Parameters on the Micro-Structural Evolution of a Single Crystal Ni-Based Superalloy

Inmaculada Lopez-Galilea; Stephan Huth; Marion Bartsch; Werner Theisen

doi:10.4028/www.scientific.net/AMR.278.72

Paper Titles

In Situ Measurement of Internal Stresses and Strain Rates by High Energy X-Ray Diffraction during High Temperature Mechanical Testing
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A Study of the Effects of Alloying Additions on TCP Phase Formation in 4^th Generation Nickel-Base Single-Crystal Superalloys
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Lattice Misfit of High Refractory Ruthenium Containing Nickel-Base Superalloys
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Characterization of Single-Crystal Dendrite Structure and Porosity in Nickel-Based Superalloys Using X-Ray Micro-Computed Tomography
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Effect of HIP Parameters on the Micro-Structural Evolution of a Single Crystal Ni-Based Superalloy
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Secondary Reaction Zone Formations in Pt-Aluminised Fourth Generation Ni-Base Single Crystal Superalloys
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A Review of the Measurement of Single Crystal Orientation Parameters of Nickel Castings
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Some Deformation Micromechanisms in Ni-Based Superalloys Evidenced Using TEM In Situ Experiments
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Effect of the Particle Size of γ’ Phase on the Mechanical Properties of Ni Base Superalloy
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HomeAdvanced Materials ResearchAdvanced Materials Research Vol. 278Effect of HIP Parameters on the Micro-Structural...

Effect of HIP Parameters on the Micro-Structural Evolution of a Single Crystal Ni-Based Superalloy

Abstract:

For reducing the porosity of single crystal (SX) nickel-based superalloys, Hot Isostatic Pressing (HIP) is used. High pressures of about 100-170 MPa lead to local deformation, which close the pores. However, since HIP also requires high temperatures (1000-1200°C) it has a pronounced effect on the microstructure and the local distribution of elements. This contribution analyses the effect of different HIP treatments on both the microstructure and the segregation of the SX superalloy LEK94 in the as-precipitation-hardened state. In addition, the effects of rapid or slow cooling are analyzed. To distinguish the effect of pressure from those of temperature, the HIPed samples are compared with specimens annealed at atmospheric pressure.

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Periodical:

Advanced Materials Research (Volume 278)

Pages:

72-77

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.278.72

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Online since:

July 2011

Authors:

Inmaculada Lopez-Galilea, Stephan Huth, Marion Bartsch, Werner Theisen

Keywords:

Diffusion, Hot Isostatic Pressing (HIP), Microstructure, Ni Based Superalloy, Single Crystal

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