Melting Diagram for the Cr ― Nb ― C System in the (Cr) ― (Nb) ― ― (NbC) Region

被引：0
|
作者：
Tamara Ya. Velikanova
Anatolii A. Bondar
机构：
[1] Institute for Problems of Materials Science,National Academy of Sciences of Ukraine
来源：
Powder Metallurgy and Metal Ceramics | 2002年 / 41卷
关键词：
phase diagram; quasibinary eutectic; phase triangulation; solidus; liquidus; melting diagram; Cr ― Nb ― C;
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学科分类号：
摘要：
It is shown from experimental tests on alloys in the Cr ― Nb ― C system in the region of the (Cr) ― (Nb) ― (NbC) subsystem at the melting (crystallization) temperatures that there are two nonvariant four-phase equilibria of congruent type: LE ↔ (Nb) + (Nb2C) + (NbCr2) at 1660°C and LE ↔ (NbC) + (Cr) + (NbCr2) at 1620°C; there is also one nonvariant four-phase equilibrium of incongruent transition type LU + (Nb2C) ↔ (NbC) + (NbCr2) at 1680°C; and two nonvariant three-phase equilibria of congruent type: Le ↔ (NbC) + (NbCr2) at 1696°C and Le ↔ (NbC) + (Cr) at 1640°C. A projection of the liquidus surface has been constructed together with the melting diagram for the system in the stated composition region.
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页码：620 / 626
页数：6
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