TY - JOUR
T1 - Crystallography and morphology of various interfaces in Ti-Ni, Ti-Pd and Ni-Mn-Ga shape memory alloys
AU - Nishida, M.
AU - Hara, T.
AU - Matsuda, M.
AU - Ii, S.
N1 - Funding Information:
The authors would like to give their sincere appreciation to Prof. T. Kakeshita and Dr. T. Fukuda of Osaka University, for their kind supply of the Ni–Mn–Ga alloy and useful discussion. This work was supported by a Grant-in-Aid for Scientific Research (B) from the Japanese Society for the Promotion of Science, COE-directing Research Program B at Kumamoto University on Nano-space Electrochemistry and Special Program at Kumamoto University for Promoting Research on Nano-space Electrochemistry.
PY - 2008/5/25
Y1 - 2008/5/25
N2 - Crystallography and morphology of various interfaces in Ti-Ni, Ti-Pd and Ni-Mn-Ga shape memory alloys are investigated by transmission electron microscopy. Neither ledge nor step structures are recognized at the irrational interface of the <0 1 1>B19′ type II twin in Ti-Ni martensite and the <1 2 1>B19 type II twin in Ti-Pd martensite in the two dimensional lattice image from the η1 direction. The combination of plate variants of the 10 and the 14 M Ni-Mn-Ga martensites is subsequently discussed. There are four plate variants commonly designated as A, B, C and D, and three fundamental plate combinations can be identified in a given plate group, namely A: B (C: D) of type II, A: C (B: D) of type I and A: D (B: C) of compound twins in both the martensites. An interesting phenomenon is the migration of A: D boundary in the 10 M martensite during the observation. Finally, we present the atomic structures of {1 1 4}B2 Σ9 boundary in the B2 parent phase of Ti-Ni. The influence of heat treatment atmosphere on the boundary structures is also discussed.
AB - Crystallography and morphology of various interfaces in Ti-Ni, Ti-Pd and Ni-Mn-Ga shape memory alloys are investigated by transmission electron microscopy. Neither ledge nor step structures are recognized at the irrational interface of the <0 1 1>B19′ type II twin in Ti-Ni martensite and the <1 2 1>B19 type II twin in Ti-Pd martensite in the two dimensional lattice image from the η1 direction. The combination of plate variants of the 10 and the 14 M Ni-Mn-Ga martensites is subsequently discussed. There are four plate variants commonly designated as A, B, C and D, and three fundamental plate combinations can be identified in a given plate group, namely A: B (C: D) of type II, A: C (B: D) of type I and A: D (B: C) of compound twins in both the martensites. An interesting phenomenon is the migration of A: D boundary in the 10 M martensite during the observation. Finally, we present the atomic structures of {1 1 4}B2 Σ9 boundary in the B2 parent phase of Ti-Ni. The influence of heat treatment atmosphere on the boundary structures is also discussed.
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U2 - 10.1016/j.msea.2007.01.179
DO - 10.1016/j.msea.2007.01.179
M3 - Article
AN - SCOPUS:41949140636
SN - 0921-5093
VL - 481-482
SP - 18
EP - 27
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 C
ER -