Phase Stability of Ni2Al3 under Electron Irradiation Academic Article

abstract

• ABSTRACTIn-situ electron irradiations at 200, 300, and 1000 keV have been performed on Ni2Al3at 100 and 300 K. At low doses, the Ni2Al3partially disorders to a B2 structure with a lattice parameter of 0.284 nm, close to that extrapolated for -NiAl at 60 at.% Al, the Ni2Al3composition. The electron dose required to disorder the Ni2Al3decreased with increasing accelerating voltage and possibly with decreasing temperature. At high doses, precipitation of aluminum from the B2 matrix occurs, along with radiation-induced sputtering and radiation-induced segregation. Lattice parameter changes for the B2 structure observed during irradiation are explained in terms of the compositional dependence of the lattice parameter of -NiAl. The B2 structure remains stable to a dose of 6 1028electrons/m2, with no amorphization detected.

authors

• Nastasi, Michael

published proceedings

• MRS Advances

author list (cited authors)

• Kenik, E. A., & Nastasi, M.

citation count

• 0

publication date

• January 1988

publisher

• Springer Nature  Publisher

published in

• MRS Advances  Journal

keywords

• 34 Chemical Sciences
• 3403 Macromolecular And Materials Chemistry
• 40 Engineering
• 4016 Materials Engineering
• 4018 Nanotechnology

Digital Object Identifier (DOI)

• 10.1557/proc-128-333

start page

• 333

volume

• 128

URL

• http://dx.doi.org/10.1557/proc-128-333