Showing papers in "Materials Transactions in 2000"
TL;DR: In this article, a partial liquidus surface projection of the Nb-W-Si system is constructed based on the observations of microstructure evolution during solidification, and phase stabilities at 1773 K in these alloys are briefly described by identifying the constituent phases after prolonged annealing treatment.
Abstract: In this paper the solidification behavior and phase stability in Nb-W-Si alloys near the Nb-W binary are described. A partial liquidus surface projection of the Nb-W-Si system is constructed based on the observations of microstructure evolution during solidification. Microstructural and microchemical evidences prove the existence of the following eutectic and peritectic reactions: L → β(Nb, W) 5 Si 3 + Nb ss ; L + β(Nb, W) 5 Si 3 → (Nb(W)) 3 Si; L → (Nb(W)) 3 Si + Nb ss . One invariant point for reaction of L + β(Nb, W) 5 Si 3 → (Nb(W)) 3 Si + Nb ss is determined near composition Nb-16Si-3W. Moreover, phase stabilities at 1773 K in these alloys are briefly described by identifying the constituent phases after prolonged annealing treatment.
27 citations