Atom probe study of radiation induced grain boundary segregation/depletion in a Fe-12%Cr alloy

2012 ◽  
Vol 57 ◽  
pp. 14-19 ◽  
Author(s):  
Rong Hu ◽  
George D.W. Smith ◽  
Emmanuelle A. Marquis
Keyword(s):  
Grain Boundary ◽  
Boundary Segregation ◽  
Atom Probe ◽  
Grain Boundary Segregation ◽  
Radiation Induced

An atom probe tomography study of grain boundary segregation in nanocrystalline Ni-W

2005 ◽  
Vol 903 ◽  
Author(s):  
Andrew Detor ◽  
Michael K. Miller ◽  
Christopher A. Schuh
Keyword(s):  
Grain Boundary ◽  
Atom Probe Tomography ◽  
Boundary Segregation ◽  
Atom Probe ◽  
Solute Segregation ◽  
Grain Boundary Segregation ◽  
Distribution Analysis ◽  
Grain Sizes ◽  
Composition Fluctuations ◽  
20 Nm

AbstractAtom probe tomography is used to observe the solute distribution in electrodeposited nanocrystalline Ni-W alloys with three different grain sizes (3, 10, and 20 nm) and the results are compared with atomistic computer simulations. The presence of grain boundary segregation is confirmed by detailed analysis of composition fluctuations in both experimental and simulated structures, and its extent quantified by a frequency distribution analysis. In contrast to other nanocrystalline alloys, the present Ni-W alloys exhibit only a subtle amount of solute segregation to the intergranular regions. This finding is consistent with quantitative predictions for these alloys based upon a thermodynamic model of grain boundary segregation.

scholarly journals Atom Probe Tomography investigations on grain boundary segregation in polycrystalline Ti(C,N) and Zr(C,N) CVD coatings

2019 ◽  
Vol 162 ◽  
pp. 335-340 ◽  
Author(s):  
Idriss El Azhari ◽  
Jenifer Barrirero ◽  
José García ◽  
Flavio Soldera ◽  
Luis Llanes ◽  
...  
Keyword(s):  
Grain Boundary ◽  
Atom Probe Tomography ◽  
Boundary Segregation ◽  
Atom Probe ◽  
Grain Boundary Segregation

Atomic Scale Characterisation of Electrodeposited Nanocrystalline Ni-P Alloys

1999 ◽  
Vol 581 ◽  
Author(s):  
Matthias Abraham ◽  
Mattias Thuvandert ◽  
Helen M. Lane ◽  
Alfred Cerezo ◽  
George D.W. Smith
Keyword(s):  
Heat Treatment ◽  
Grain Boundary ◽  
Grain Boundaries ◽  
Three Dimensional ◽  
Boundary Segregation ◽  
Atom Probe ◽  
Atomic Scale ◽  
Grain Boundary Segregation ◽  
P Concentration

ABSTRACTNanocrystalline Ni-P alloys produced by electrodeposition have been characterised by three-dimensional atom probe (3DAP) analysis. In the as-deposited materials, there are indications of some variation in P concentration between grains and segregation to grain boundaries. After heat treatment however, strong grain boundary segregation and the formation of Ni3P precipitates have been observed.

scholarly journals Grain boundary segregation in Ni-base alloys: A combined atom probe tomography and first principles study

2021 ◽  
Vol 221 ◽  
pp. 117354
Author(s):  
Anna Sophie Ebner ◽  
Severin Jakob ◽  
Helmut Clemens ◽  
Reinhard Pippan ◽  
Verena Maier-Kiener ◽  
...  
Keyword(s):  
Grain Boundary ◽  
First Principles ◽  
Atom Probe Tomography ◽  
Boundary Segregation ◽  
Atom Probe ◽  
Grain Boundary Segregation ◽  
First Principles Study
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