Assessment of dynamic softening mechanisms in Allvac® 718Plus™ by EBSD analysis

Stefan Mitsche; Christof Sommitsch; Daniel Huber; Martin Stockinger; Peter Poelt

doi:10.1016/j.msea.2011.01.044

Assessment of dynamic softening mechanisms in Allvac^® 718Plus™ by EBSD analysis

Stefan Mitsche^*, Christof Sommitsch, Daniel Huber, Martin Stockinger, Peter Poelt

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

Abstract

The nickel-based superalloy Allvac^® 718Plus™ is a future candidate for turbine disc applications, as this new material combines the formability and cost advantages of Alloy 718 with the higher temperature capability of Waspaloy. Due to the strong influence of the microstructure on the final mechanical properties, a fundamental knowledge of the dynamic recrystallization mechanism of Allvac^® 718Plus™ is of great importance in order to develop precise microstructure evolution models for this material. Compression tests were performed at temperatures of 900°C to 1050°C and strain rates between 0.1s^-1 and 10s^-1. The microstructures obtained were analyzed by electron backscatter diffraction (EBSD) to evaluate the influence of the different hot forming parameters on the dynamic softening processes of Allvac^® 718Plus™.

Original language	English
Pages (from-to)	3754-3760
Number of pages	7
Journal	Materials Science and Engineering A
Volume	528
Issue number	10-11
DOIs	https://doi.org/10.1016/j.msea.2011.01.044
Publication status	Published - 25 Apr 2011

Keywords

Dynamic recrystallization
EBSD
Recrystallization mechanism
Superalloy 718Plus

ASJC Scopus subject areas

General Materials Science
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering

Access to Document

10.1016/j.msea.2011.01.044

Cite this

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title = "Assessment of dynamic softening mechanisms in Allvac{\textregistered} 718Plus{\texttrademark} by EBSD analysis",

abstract = "The nickel-based superalloy Allvac{\textregistered} 718Plus{\texttrademark} is a future candidate for turbine disc applications, as this new material combines the formability and cost advantages of Alloy 718 with the higher temperature capability of Waspaloy. Due to the strong influence of the microstructure on the final mechanical properties, a fundamental knowledge of the dynamic recrystallization mechanism of Allvac{\textregistered} 718Plus{\texttrademark} is of great importance in order to develop precise microstructure evolution models for this material. Compression tests were performed at temperatures of 900°C to 1050°C and strain rates between 0.1s-1 and 10s-1. The microstructures obtained were analyzed by electron backscatter diffraction (EBSD) to evaluate the influence of the different hot forming parameters on the dynamic softening processes of Allvac{\textregistered} 718Plus{\texttrademark}.",

keywords = "Dynamic recrystallization, EBSD, Recrystallization mechanism, Superalloy 718Plus",

author = "Stefan Mitsche and Christof Sommitsch and Daniel Huber and Martin Stockinger and Peter Poelt",

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doi = "10.1016/j.msea.2011.01.044",

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journal = "Materials Science and Engineering A ",

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AU - Mitsche, Stefan

AU - Sommitsch, Christof

AU - Huber, Daniel

AU - Stockinger, Martin

AU - Poelt, Peter

PY - 2011/4/25

Y1 - 2011/4/25

N2 - The nickel-based superalloy Allvac® 718Plus™ is a future candidate for turbine disc applications, as this new material combines the formability and cost advantages of Alloy 718 with the higher temperature capability of Waspaloy. Due to the strong influence of the microstructure on the final mechanical properties, a fundamental knowledge of the dynamic recrystallization mechanism of Allvac® 718Plus™ is of great importance in order to develop precise microstructure evolution models for this material. Compression tests were performed at temperatures of 900°C to 1050°C and strain rates between 0.1s-1 and 10s-1. The microstructures obtained were analyzed by electron backscatter diffraction (EBSD) to evaluate the influence of the different hot forming parameters on the dynamic softening processes of Allvac® 718Plus™.

AB - The nickel-based superalloy Allvac® 718Plus™ is a future candidate for turbine disc applications, as this new material combines the formability and cost advantages of Alloy 718 with the higher temperature capability of Waspaloy. Due to the strong influence of the microstructure on the final mechanical properties, a fundamental knowledge of the dynamic recrystallization mechanism of Allvac® 718Plus™ is of great importance in order to develop precise microstructure evolution models for this material. Compression tests were performed at temperatures of 900°C to 1050°C and strain rates between 0.1s-1 and 10s-1. The microstructures obtained were analyzed by electron backscatter diffraction (EBSD) to evaluate the influence of the different hot forming parameters on the dynamic softening processes of Allvac® 718Plus™.

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