|
Title
|
|
|
|
Microstructure and precipitates in annealed ferromagnetic shape memory alloy
|
|
|
Author
|
|
|
|
|
|
|
Abstract
|
|
|
|
| Transmission electron microscopy was performed to investigate the microstructure and precipitates in the annealed Co38Ni33Al29 ferromagnetic shape memory alloy. Apart from the dendritic secondary phase in the austenite matrix, micron-sized (up to 100 μm) fcc-based precipitates with partial γ′ L12 ordering and containing none, one or three {1 1 1}p parallel twin planes were found. The orientation relationship between the precipitates and matrix was found to be KurdjumovSachs. STEMEDX analysis indicates that twinned and non-twinned precipitates are Co-rich and Al- and Ni-deficient with respect to the matrix and with a lower Co/Al ratio for the latter. The 3D morphologies of precipitates were reconstructed with focused ion beam/scanning electron microscope dual-beam slice-and-view imaging, showing that the single {1 1 1}p plane twinned precipitates have a plate-like shape while the non-twinned precipitates are lath-like and often bent. |
|
|
|
Language
|
|
|
|
English
|
|
|
Source (journal)
|
|
|
|
Journal of alloys and compounds. - Amsterdam
|
|
|
Publication
|
|
|
|
Amsterdam
:
2013
|
|
|
ISSN
|
|
|
|
0925-8388
|
|
|
DOI
|
|
|
|
10.1016/J.JALLCOM.2013.03.228
|
|
|
Volume/pages
|
|
|
|
572
(2013)
, p. 5-10
|
|
|
ISI
|
|
|
|
000319209600002
|
|
|
Full text (Publisher's DOI)
|
|
|
|
|
|
|
Full text (publisher's version - intranet only)
|
|
|
|
|
|