EFFECT OF BORON ON THE CHEMISTRY OF GRAIN BOUNDARIES IN STOICHIOMETRIC Ni3Al.

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作者：
Dartmouth College, Hanover, NH, USA, Dartmouth College, Hanover, NH, USA [1 ]
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来源：
Philos Mag B | 1988年 / 3卷 / 379-385期
关键词：
BORON - METAL FOIL - NICKEL AND ALLOYS - Ductility - SPECTROSCOPY; X-RAY; -; Applications;
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摘要：
X-ray spectra have been obtained, using a 1 nm diameter electron beam, from thin foils of stoichiometric Ni//3Al with and without boron (0. 35 at. %). The boron addition produces nickel enrichment at grain boundaries, which implies a disordering of this region. Disordering of the grain boundary and the consequent expected increase in grain boundary dislocation mobility are suggested to be the reason for the ductility improvement of Ni//3Al due to boron.
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