TY - JOUR
T1 - Crystallographic analysis of grain boundary Bcc-precipitates in a Ni-Cr alloy by FESEM/EBSD and TEM/Kikuchi line methods
AU - Adachi, Yoshitaka
AU - Hakata, Kazunari
AU - Tsuzaki, Kaneaki
N1 - Funding Information:
The authors wish to thank Ms. R. Yoda of Kobelco Research Institute, Inc. and Ms. A. Sakurai of National Institute for Materials Science (NIMS) for EBSD operation. Dr. G.L. Kelly of Deakin University and Dr. Susarla Venkata Surya Narayana Murty of NIMS are gratefully acknowledged for English correction. This study was partially performed through Funds of Iketani Science Technology Foundation and Special Coordination Funds of the Ministry of Education, Culture, Sports, Science and Technology of the Japanese Government.
PY - 2005/12/5
Y1 - 2005/12/5
N2 - Variant selection of intergranular bcc-Cr precipitates in a Ni-43 mass% 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.
AB - Variant selection of intergranular bcc-Cr precipitates in a Ni-43 mass% 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.
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U2 - 10.1016/j.msea.2005.09.033
DO - 10.1016/j.msea.2005.09.033
M3 - Article
AN - SCOPUS:28844434998
SN - 0921-5093
VL - 412
SP - 252
EP - 263
JO - Materials Science & Engineering A: Structural Materials: Properties, Microstructure and Processing
JF - Materials Science & Engineering A: Structural Materials: Properties, Microstructure and Processing
IS - 1-2
ER -