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

S. Birosca*

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference 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 languageEnglish
Title of host publicationIOP Conference Series: Materials Science and Engineering
PublisherIOP Publishing Ltd.
Number of pages6
DOIs
Publication statusPublished - 24 Apr 2015
Event17th International Conference on Textures of Materials - Dresden, Germany
Duration: 24 Aug 201429 Aug 2014

Publication series

NameIOP Conference Series: Materials Science and Engineering
PublisherIOP Publishing Ltd.
Volume82
ISSN (Print)1757-8981

Conference

Conference17th International Conference on Textures of Materials
Abbreviated titleICOTOM 2014
Country/TerritoryGermany
CityDresden
Period24/08/1429/08/14

Keywords

  • RCUK
  • EPRSC
  • EP/H500383/1

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