High strain rate deformation of nickel-base superalloy compact

Specialized metallurgical processes – compositions for use therei – Compositions – Consolidated metal powder compositions

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75244, 75246, 419 11, 419 28, 419 39, 419 49, 420441, C22C 2900, B22F 315

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active

054512441

ABSTRACT:
A process for preparing a consolidated nickel-base superalloy compact suitable for tensile force inducing high strain rate deformation. It includes the steps of: preparing a melt of a nickel-base superalloy in a vacuum; atomizing the melt into powder in a protective atmosphere; collecting the powder; screening the powder to proper size; introducing the powder into a container; evacuating and sealing the container in a vacuum; and consolidating the powder under pressure at a temperature below the solidus temperature of the alloy and at a temperature at which grain boundaries grow past prior particle boundaries.

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