Experimental investigation on the phase equilibria of the nb-Ti-Si-B system at 1500 °c

Zhiping Sun; Ying Yang; Xiping Guo; Chuan Zhang; Y. Austin Chang

doi:10.1007/s11669-011-9928-4

Experimental investigation on the phase equilibria of the nb-Ti-Si-B system at 1500 °c

Zhiping Sun, Ying Yang, Xiping Guo, Chuan Zhang, Y. Austin Chang

School of Materials Sience and Engineering

Research output: Contribution to journal › Article › peer-review

6 Scopus citations

Abstract

The phase equilibria at 1500 °C of the Nb-Ti-Si-B quaternary at the Nb-rich region were carefully studied. Seven alloys were arc-melted and subsequently annealed at 1500 °C for 150 h. BSE image, XRD and EPMA results show that Nbss + T2 + Nb ₃B ₂, Nbss + T2 + Nb ₃Si and Nbss + T2 + Nb ₃B ₂ + Nb ₃Si were present in these alloys. Extensive solubility of Ti and Si were found in the Nb ₃B ₂ phase. The experimental findings were compared favorably with the calculated phase equilibria. The phase equilibria in the Nb-rich region of the Nb-Ti-Si-B system have Nbss + T2, Nbss + T2 + Nb ₃B ₂, Nbss + T2 + Nb ₃Si and Nbss + T2 + Nb ₃B ₂ + Nb ₃Si. This work provides important guide lines on the effect of B addition to the microstructure of the Nb-rich Nb-Ti-Si alloys.

Original language	English
Pages (from-to)	407-411
Number of pages	5
Journal	Journal of Phase Equilibria and Diffusion
Volume	32
Issue number	5
DOIs	https://doi.org/10.1007/s11669-011-9928-4
State	Published - Oct 2011

Keywords

CALPHAD approach
experimental phase equilibria
quaternary
refractory materials

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title = "Experimental investigation on the phase equilibria of the nb-Ti-Si-B system at 1500 °c",

abstract = "The phase equilibria at 1500 °C of the Nb-Ti-Si-B quaternary at the Nb-rich region were carefully studied. Seven alloys were arc-melted and subsequently annealed at 1500 °C for 150 h. BSE image, XRD and EPMA results show that Nbss + T2 + Nb 3B 2, Nbss + T2 + Nb 3Si and Nbss + T2 + Nb 3B 2 + Nb 3Si were present in these alloys. Extensive solubility of Ti and Si were found in the Nb 3B 2 phase. The experimental findings were compared favorably with the calculated phase equilibria. The phase equilibria in the Nb-rich region of the Nb-Ti-Si-B system have Nbss + T2, Nbss + T2 + Nb 3B 2, Nbss + T2 + Nb 3Si and Nbss + T2 + Nb 3B 2 + Nb 3Si. This work provides important guide lines on the effect of B addition to the microstructure of the Nb-rich Nb-Ti-Si alloys.",

keywords = "CALPHAD approach, experimental phase equilibria, quaternary, refractory materials",

author = "Zhiping Sun and Ying Yang and Xiping Guo and Chuan Zhang and Chang, {Y. Austin}",

year = "2011",

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doi = "10.1007/s11669-011-9928-4",

language = "英语",

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T1 - Experimental investigation on the phase equilibria of the nb-Ti-Si-B system at 1500 °c

AU - Sun, Zhiping

AU - Yang, Ying

AU - Guo, Xiping

AU - Zhang, Chuan

AU - Chang, Y. Austin

PY - 2011/10

Y1 - 2011/10

N2 - The phase equilibria at 1500 °C of the Nb-Ti-Si-B quaternary at the Nb-rich region were carefully studied. Seven alloys were arc-melted and subsequently annealed at 1500 °C for 150 h. BSE image, XRD and EPMA results show that Nbss + T2 + Nb 3B 2, Nbss + T2 + Nb 3Si and Nbss + T2 + Nb 3B 2 + Nb 3Si were present in these alloys. Extensive solubility of Ti and Si were found in the Nb 3B 2 phase. The experimental findings were compared favorably with the calculated phase equilibria. The phase equilibria in the Nb-rich region of the Nb-Ti-Si-B system have Nbss + T2, Nbss + T2 + Nb 3B 2, Nbss + T2 + Nb 3Si and Nbss + T2 + Nb 3B 2 + Nb 3Si. This work provides important guide lines on the effect of B addition to the microstructure of the Nb-rich Nb-Ti-Si alloys.

AB - The phase equilibria at 1500 °C of the Nb-Ti-Si-B quaternary at the Nb-rich region were carefully studied. Seven alloys were arc-melted and subsequently annealed at 1500 °C for 150 h. BSE image, XRD and EPMA results show that Nbss + T2 + Nb 3B 2, Nbss + T2 + Nb 3Si and Nbss + T2 + Nb 3B 2 + Nb 3Si were present in these alloys. Extensive solubility of Ti and Si were found in the Nb 3B 2 phase. The experimental findings were compared favorably with the calculated phase equilibria. The phase equilibria in the Nb-rich region of the Nb-Ti-Si-B system have Nbss + T2, Nbss + T2 + Nb 3B 2, Nbss + T2 + Nb 3Si and Nbss + T2 + Nb 3B 2 + Nb 3Si. This work provides important guide lines on the effect of B addition to the microstructure of the Nb-rich Nb-Ti-Si alloys.

KW - CALPHAD approach

KW - experimental phase equilibria

KW - quaternary

KW - refractory materials

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SN - 1547-7037

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JO - Journal of Phase Equilibria and Diffusion

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ER -

Experimental investigation on the phase equilibria of the nb-Ti-Si-B system at 1500 °c

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