Publication
Title
Optimization of a FIB/SEM slice-and-view study of the 3D distribution of $Ni_{4}Ti_{3}$ precipitates in NiTi
Author
Abstract
 The 3D morphology and distribution of lenticular Ni4Ti3 precipitates in the austenitic B2 matrix of a binary Ni51Ti49 alloy has been investigated by a slice-and-view procedure in a dual-beam focused ion beam/scanning electron microscope system. Due to the weak contrast of the precipitates, proper imaging conditions need to be selected first to allow for semi-automated image treatment. Knowledgeable imaging is further needed to ensure that all variants of the precipitates are observed with equal probability, regardless of sample orientation. Finally, a volume ratio of 10.2% for the Ni4Ti3 precipitates could be calculated, summed over all variants, which yields a net composition of Ni50.27Ti49.73 for the matrix, leading to an increase of 125 degrees for the martensitic start temperature. Also, the expected relative orientation of the different variants of the precipitates could be confirmed.
Language
English
Source (journal)
Journal of microscopy. - Oxford
Publication
Oxford : 2009
ISSN
0022-2720
Volume/pages
233:1(2009), p. 61-68
ISI
000262511900008
Full text (Publishers DOI)
UAntwerpen
 Faculty/Department Research group Publication type Subject Affiliation Publications with a UAntwerp address
External links
 Web of Science
Record
 Identification Creation 08.05.2009 Last edited 17.05.2017 To cite this reference