Abstract:A new strategy to toughen NbCr2 Laves phase was proposed, in which ductile Cr and Nb solid solutions were incorporated by accelerating solute segregation within NbCr2 matrix using external applied pulsed electric current. A dense bulk consisting of ultrafine NbCr2 grains with abundant Cr and Nb solid solutions along the grain boundaries was produced by spark plasma sintering using monolithic NbCr2 starting powders. The formation of Cr and Nb solid solutions was attributed to the enhanced atomic transport, whic… Show more
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