TY - JOUR
T1 - Short range order sturctures in fcc-based Ni-Mo studied by high resolution transmission electron microscopy with image processing
AU - Hata, S.
AU - Mitate, T.
AU - Kuwano, N.
AU - Matsumura, S.
AU - Shindo, D.
AU - Oki, K.
N1 - Funding Information:
The authors would like to thank T. Manabe of the HVEM Laboratory, Kyushu University for his kind help in operation of JEM-2010FEF. This study was partly supported by grants-in-aid for Scientific Research on Priority Areas (A) (1) (nos. 09242102, 09242106) from the Ministry of Education, Science, Sports and Culture, Japan, and grant-in-aid for Scientific Research (B) (2) (no. 10450234) from Japan Society for the Promotion of Science. One of the authors (S.H.) is indebted for financial support to the Kazato Research Foundation, Japan.
PY - 2001/8/15
Y1 - 2001/8/15
N2 - Modern high resolution transmission electron microscopy was employed in study of short range order (SRO) in fec-based Ni-Mo, which is classified as '1 1/2 0 alloy'. Digital processing of high resolution transmission electron microscope (HRTEM) images can give information about local atomic arrangements of SRO as well as their projection views. The HRTEM observation with image processing reveals the SRO structures in Ni-Mo depending upon the alloy composition and the heat treatment. Subunit cell clusters of D1a, DO22 and Pt2Mo structures are generated in the SRO states of Ni4Mo and Ni3Mo alloys. In the initial SRO stales, the number of Pt2Mo type clusters increases with Mo composition while that of D1a type decreases. The D1a, DO22 and Pt2Mo type clusters increase in number in the early stages of subsequent ordering. The formation of D1a DO22 and Pt2Mo type clusters in the SRO states is rationalized in terms of the similar tendencies in atomic configuration between D1a DO22 and Pt2Mo structures.
AB - Modern high resolution transmission electron microscopy was employed in study of short range order (SRO) in fec-based Ni-Mo, which is classified as '1 1/2 0 alloy'. Digital processing of high resolution transmission electron microscope (HRTEM) images can give information about local atomic arrangements of SRO as well as their projection views. The HRTEM observation with image processing reveals the SRO structures in Ni-Mo depending upon the alloy composition and the heat treatment. Subunit cell clusters of D1a, DO22 and Pt2Mo structures are generated in the SRO states of Ni4Mo and Ni3Mo alloys. In the initial SRO stales, the number of Pt2Mo type clusters increases with Mo composition while that of D1a type decreases. The D1a, DO22 and Pt2Mo type clusters increase in number in the early stages of subsequent ordering. The formation of D1a DO22 and Pt2Mo type clusters in the SRO states is rationalized in terms of the similar tendencies in atomic configuration between D1a DO22 and Pt2Mo structures.
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U2 - 10.1016/S0921-5093(00)01872-4
DO - 10.1016/S0921-5093(00)01872-4
M3 - Article
AN - SCOPUS:0035882730
SN - 0921-5093
VL - 312
SP - 160
EP - 167
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 -