Phase separation in ion bombarded FeNi INVAR alloys

Details Phase separation in ion bombarded FeNi INVAR alloys Phase separation in ion bombarded FeNi INVAR alloys

Jul 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991jap....70..131g&link_type=abstract

Journal of Applied Physics (ISSN 0021-8979), vol. 70, July 1, 1991, p. 131-134. Research supported by CAPES, CNPq, and FINEP.

Physics

4

Ion Irradiation, Iron Alloys, Meteoritic Composition, Phase Separation (Materials), Nickel Alloys, Radiation Chemistry

Scientific paper

The paper reports an investigation of the effect of ion bombardment, with different noble gas ions, on the phase structure of FeNi Invar alloys, at compositions of 30.6 and 39.5 at. pct Ni. A clear phase separation for Ne was observed; the same effect but not so strong was observed for Ar; and a reverse effect was observed for Kr. These finds are interpreted as evidence that, for lighter ions, the radiation-enhanced diffusion effect is dominant, while for the heavier ions studied (Kr) the displacement effect is dominant. The results are of interest in connection with investigations of meteorite spectra.

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