TY - JOUR
T1 - Phase decomposition and ordering in Ni-11.3 at.% Ti studied with atom probe tomography
AU - Al-Kassab, Tala'at
AU - Kompatscher, Michael
AU - Kirchheim, Reiner
AU - Kostorz, Gernot
AU - Schönfeld, Bernd
N1 - KAUST Repository Item: Exported on 2020-10-01
Acknowledgements: The authors are grateful to Erwin Fischer for growing the single crystals. This research was supported in part by the Swiss National Science Foundation. T. Al-Kassab would like to appreciate the generous base line funding support by KAUST.
PY - 2014/9
Y1 - 2014/9
N2 - The decomposition behavior of Ni-rich Ni-Ti was reassessed using Tomographic Atom Probe (TAP) and Laser Assisted Wide Angle Tomographic Atom Probe. Single crystalline specimens of Ni-11.3at.% Ti were investigated, the states selected from the decomposition path were the metastable γ″ and γ' states introduced on the basis of small-angle neutron scattering (SANS) and the two-phase model for evaluation. The composition values of the precipitates in these states could not be confirmed by APT data as the interface of the ordered precipitates may not be neglected. The present results rather suggest to apply a three-phase model for the interpretation of SANS measurements, in which the width of the interface remains nearly unchanged and the L12 structure close to 3:1 stoichiometry is maintained in the core of the precipitates from the γ″ to the γ' state. © 2014 Elsevier Ltd.
AB - The decomposition behavior of Ni-rich Ni-Ti was reassessed using Tomographic Atom Probe (TAP) and Laser Assisted Wide Angle Tomographic Atom Probe. Single crystalline specimens of Ni-11.3at.% Ti were investigated, the states selected from the decomposition path were the metastable γ″ and γ' states introduced on the basis of small-angle neutron scattering (SANS) and the two-phase model for evaluation. The composition values of the precipitates in these states could not be confirmed by APT data as the interface of the ordered precipitates may not be neglected. The present results rather suggest to apply a three-phase model for the interpretation of SANS measurements, in which the width of the interface remains nearly unchanged and the L12 structure close to 3:1 stoichiometry is maintained in the core of the precipitates from the γ″ to the γ' state. © 2014 Elsevier Ltd.
UR - http://hdl.handle.net/10754/563723
UR - https://linkinghub.elsevier.com/retrieve/pii/S0968432814000766
UR - http://www.scopus.com/inward/record.url?scp=84899673181&partnerID=8YFLogxK
U2 - 10.1016/j.micron.2014.04.004
DO - 10.1016/j.micron.2014.04.004
M3 - Article
C2 - 24981213
SN - 0968-4328
VL - 64
SP - 45
EP - 51
JO - Micron
JF - Micron
ER -