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Crystallographic analysis of grain boundary Bcc-precipitates in a Ni–Cr alloy by FESEM/EBSD and TEM/Kikuchi line methods
- Source :
-
Materials Science & Engineering: A . Dec2005, Vol. 412 Issue 1/2, p252-263. 12p. - Publication Year :
- 2005
-
Abstract
- Abstract: Variant selection of intergranular bcc-Cr precipitates in a Ni–43mass% Cr alloy was studied by electron backscattering diffraction (EBSD) in a scanning electron microscope equipped with a field emission gun (FESEM) and Kikuchi line analysis in transmission electron microscope (TEM). A single variant was invariably selected at the underlying grain boundaries (GB) when GB-precipitates were KS-related with respect to both the adjacent matrix grains. Meanwhile multiple variants were formed at the GB when GB-precipitates were KS-related to one of the adjacent matrix grains. Theses variant selections were examined with the tilt angle to underlying GB of low-energy interphase boundaries and the orientation relationship with respect to both the adjacent matrix grains. The underlying mechanism was discussed from the viewpoint of activation energy for nucleation of two-dimensional nuclei. [Copyright &y& Elsevier]
- Subjects :
- *CRYSTALLOGRAPHY
*CRYSTAL grain boundaries
*ALLOYS
*SCANNING electron microscopes
Subjects
Details
- Language :
- English
- ISSN :
- 09215093
- Volume :
- 412
- Issue :
- 1/2
- Database :
- Academic Search Index
- Journal :
- Materials Science & Engineering: A
- Publication Type :
- Academic Journal
- Accession number :
- 19060269
- Full Text :
- https://doi.org/10.1016/j.msea.2005.09.033