TY - JOUR
T1 - TEM characterization of Ge precipitates in an Al-1.6 at% Ge alloy
AU - Kaneko, K.
AU - Inoke, K.
AU - Sato, K.
AU - Kitawaki, K.
AU - Higashida, H.
AU - Arslan, I.
AU - Midgley, P. A.
N1 - Funding Information:
This work was supported in part by a ‘Grant-in-Aid for Scientific Research (No. 19360317)’ and by the ‘Global-COE program (Future Molecular System)’, of the Ministry of Education, Culture, Sports, Science and Technology of Japan. The authors thank Mr. Y. Yoshida and Mr. R. Nagayama of Kyushu University for their technical assistance, and Prof. Z. Horita for fruitful discussion. P.A.M. thanks the Isaac Newton Trust for funding and the Royal Academy of Engineering and the Leverhulme Trust for the award of a Senior Research Fellowships. I.A. thanks the Royal Society for a Research Fellowship.
PY - 2008/2
Y1 - 2008/2
N2 - The growth mechanism and morphology of Ge precipitates in an Al-Ge alloy was characterized by a combination of in-situ transmission electron microscopy, high-resolution transmission electron microscopy and three-dimensional electron tomography. Anisotropic growth of rod-shaped Ge precipitates was observed by in-situ transmission electron microscopy over different time periods, and faceting of the precipitates was clearly seen using high-resolution transmission electron microscopy and three-dimensional electron tomography. This anisotropic growth of rod-shaped Ge precipitates was enhanced by vacancy concentration as proposed previously, but also by surface diffusion as observed during the in-situ experiment. Furthermore, a variety of precipitate morphologies was identified by three-dimensional electron tomography.
AB - The growth mechanism and morphology of Ge precipitates in an Al-Ge alloy was characterized by a combination of in-situ transmission electron microscopy, high-resolution transmission electron microscopy and three-dimensional electron tomography. Anisotropic growth of rod-shaped Ge precipitates was observed by in-situ transmission electron microscopy over different time periods, and faceting of the precipitates was clearly seen using high-resolution transmission electron microscopy and three-dimensional electron tomography. This anisotropic growth of rod-shaped Ge precipitates was enhanced by vacancy concentration as proposed previously, but also by surface diffusion as observed during the in-situ experiment. Furthermore, a variety of precipitate morphologies was identified by three-dimensional electron tomography.
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U2 - 10.1016/j.ultramic.2007.04.020
DO - 10.1016/j.ultramic.2007.04.020
M3 - Article
C2 - 18037565
AN - SCOPUS:38349103728
SN - 0304-3991
VL - 108
SP - 210
EP - 220
JO - Ultramicroscopy
JF - Ultramicroscopy
IS - 3
ER -