Article ID Journal Published Year Pages File Type
1639899 Transactions of Nonferrous Metals Society of China 2009 4 Pages PDF
Abstract

Nb-Ti-C alloys with different Ti contents (4%–16%, mole fraction) were fabricated by vacuum non-consumable arc-melting method. The results indicate that the alloys contain niobium solid solution (Nbss), carbides (Nb2C, (Nb, Ti)C) and eutectic of Nbss/MC. Carbides in the Nb-Ti-C alloys change from Nb2C to (Nb, Ti)C with the increase of titanium content. Microstructures in the as-cast state include primary plate-like Nb2C, eutectic of Nbss/Nb2C, Nbss and secondary needle-like Nb2C in Nb-5Ti-4C alloy, and other microstructures are primary Nbss, eutectic of Nbss/(Nb, Ti)C. Morphology of carbides are changed apparently through adding different Ti contents, and morphology of Nbss changes from the cellular structure to dendrite.

Related Topics
Physical Sciences and Engineering Materials Science Metals and Alloys