The deformation behaviour of hard and soft grains in RR1000 nickel-based superalloy

S. Birosca

doi:10.1088/1757-899X/82/1/012033

The deformation behaviour of hard and soft grains in RR1000 nickel-based superalloy

S. Birosca^*

^*Corresponding author for this work

School of Mechanical & Design Engineering

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

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Abstract

In the current study, the Electron Backscatter Diffraction (EBSD) plastic strain measurement is assessed to ascertain the deformation behaviour within individual oriented grains in polycrystalline RR1000 Nickel-based superalloy. Here, the crystallographic orientation correlations with Geometrically Necessary Dislocation (GND) contents, Schmid and Taylor factors as well as strain hardening were investigated. It is demonstrated that grain boundary is the major factor influencing GND accumulation in soft grains, while the orientation is the critical factor in hard grains' fragmentation. Furthermore, it is concluded that the total GND value for individual grains varies depending on the deformation stage, whereas the locations of high GND density within the grains indicates on strain hardening state. Keywords: GND, Strain Hardening, FCC, Deformation.

Original language	English
Title of host publication	IOP Conference Series: Materials Science and Engineering
Publisher	IOP Publishing Ltd.
Number of pages	6
DOIs	https://doi.org/10.1088/1757-899X/82/1/012033
Publication status	Published - 24 Apr 2015
Event	17th International Conference on Textures of Materials - Dresden, Germany Duration: 24 Aug 2014 → 29 Aug 2014

Publication series

Name	IOP Conference Series: Materials Science and Engineering
Publisher	IOP Publishing Ltd.
Volume	82
ISSN (Print)	1757-8981

Conference

Conference	17th International Conference on Textures of Materials
Abbreviated title	ICOTOM 2014
Country/Territory	Germany
City	Dresden
Period	24/08/14 → 29/08/14

Keywords

RCUK
EPRSC
EP/H500383/1

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10.1088/1757-899X/82/1/012033

The deformation behaviourFinal published version, 2.44 MBLicence: CC BY

Cite this

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title = "The deformation behaviour of hard and soft grains in RR1000 nickel-based superalloy",

abstract = "In the current study, the Electron Backscatter Diffraction (EBSD) plastic strain measurement is assessed to ascertain the deformation behaviour within individual oriented grains in polycrystalline RR1000 Nickel-based superalloy. Here, the crystallographic orientation correlations with Geometrically Necessary Dislocation (GND) contents, Schmid and Taylor factors as well as strain hardening were investigated. It is demonstrated that grain boundary is the major factor influencing GND accumulation in soft grains, while the orientation is the critical factor in hard grains' fragmentation. Furthermore, it is concluded that the total GND value for individual grains varies depending on the deformation stage, whereas the locations of high GND density within the grains indicates on strain hardening state. Keywords: GND, Strain Hardening, FCC, Deformation.",

keywords = "RCUK, EPRSC, EP/H500383/1",

author = "S. Birosca",

year = "2015",

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day = "24",

doi = "10.1088/1757-899X/82/1/012033",

language = "English",

series = "IOP Conference Series: Materials Science and Engineering",

publisher = "IOP Publishing Ltd.",

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note = "17th International Conference on Textures of Materials, ICOTOM 2014 ; Conference date: 24-08-2014 Through 29-08-2014",

}

Birosca, S 2015, The deformation behaviour of hard and soft grains in RR1000 nickel-based superalloy. in IOP Conference Series: Materials Science and Engineering., 012033, IOP Conference Series: Materials Science and Engineering, vol. 82, IOP Publishing Ltd., 17th International Conference on Textures of Materials, Dresden, Germany, 24/08/14. https://doi.org/10.1088/1757-899X/82/1/012033

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T1 - The deformation behaviour of hard and soft grains in RR1000 nickel-based superalloy

AU - Birosca, S.

PY - 2015/4/24

Y1 - 2015/4/24

N2 - In the current study, the Electron Backscatter Diffraction (EBSD) plastic strain measurement is assessed to ascertain the deformation behaviour within individual oriented grains in polycrystalline RR1000 Nickel-based superalloy. Here, the crystallographic orientation correlations with Geometrically Necessary Dislocation (GND) contents, Schmid and Taylor factors as well as strain hardening were investigated. It is demonstrated that grain boundary is the major factor influencing GND accumulation in soft grains, while the orientation is the critical factor in hard grains' fragmentation. Furthermore, it is concluded that the total GND value for individual grains varies depending on the deformation stage, whereas the locations of high GND density within the grains indicates on strain hardening state. Keywords: GND, Strain Hardening, FCC, Deformation.

AB - In the current study, the Electron Backscatter Diffraction (EBSD) plastic strain measurement is assessed to ascertain the deformation behaviour within individual oriented grains in polycrystalline RR1000 Nickel-based superalloy. Here, the crystallographic orientation correlations with Geometrically Necessary Dislocation (GND) contents, Schmid and Taylor factors as well as strain hardening were investigated. It is demonstrated that grain boundary is the major factor influencing GND accumulation in soft grains, while the orientation is the critical factor in hard grains' fragmentation. Furthermore, it is concluded that the total GND value for individual grains varies depending on the deformation stage, whereas the locations of high GND density within the grains indicates on strain hardening state. Keywords: GND, Strain Hardening, FCC, Deformation.

KW - RCUK

KW - EPRSC

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M3 - Conference contribution

AN - SCOPUS:84928788332

T3 - IOP Conference Series: Materials Science and Engineering

BT - IOP Conference Series: Materials Science and Engineering

PB - IOP Publishing Ltd.

T2 - 17th International Conference on Textures of Materials

Y2 - 24 August 2014 through 29 August 2014

ER -

The deformation behaviour of hard and soft grains in RR1000 nickel-based superalloy

Abstract

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Conference

Keywords

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