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Characterisation of surface recrystallisation in a grit-blasted single-crystal superalloy
- Source :
- Materials Science and Technology. 34:334-339
- Publication Year :
- 2017
- Publisher :
- Informa UK Limited, 2017.
-
Abstract
- In this work, detailed experimental insights regarding the microstructural features on surface recrystallisation of a grit-blasted single crystal superalloy DD6 have been obtained by transmission electron microcopy (TEM), scanning transmission electron microcopy (STEM), scanning electron microscopy and electron backscattered diffraction (EBSD) techniques. The broadened diffraction ring arcs typical for micro-textures revealed the fragmented finer grains after surface grit-blasting. Energy dispersive spectroscopy analysis and STEM mapping confirmed the characteristic elements for differentiation of γ′ and γ phase, and the precipitated secondary or tertiary γ′ in the recrystallised region was characterised by dark field TEM. Moreover, the recrystallisation depth was feasibly revealed by ion-etching and further used for EBSD imaging without polishing. The resulted EBSD pole figures and misorientation profiles confirmed that the recrystallised region exhibited a rather random orientation, destroying t...
- Subjects :
- 010302 applied physics
Diffraction
Materials science
Misorientation
Scanning electron microscope
Mechanical Engineering
Metallurgy
Energy-dispersive X-ray spectroscopy
Polishing
02 engineering and technology
021001 nanoscience & nanotechnology
Condensed Matter Physics
01 natural sciences
Dark field microscopy
Mechanics of Materials
Phase (matter)
0103 physical sciences
General Materials Science
0210 nano-technology
Electron backscatter diffraction
Subjects
Details
- ISSN :
- 17432847 and 02670836
- Volume :
- 34
- Database :
- OpenAIRE
- Journal :
- Materials Science and Technology
- Accession number :
- edsair.doi...........ac2f48e2f7aad562a59074a862fb139c