Effect of Cr addition on the multiphase equilibria in the Nb-rich Nb-Si-Ti system - thermodynamic modeling and designed experiments

Y. Yang; B. P. Bewlay; S. L. Chen; M. R. Jackson; Y. A. Chang

Effect of Cr addition on the multiphase equilibria in the Nb-rich Nb-Si-Ti system - thermodynamic modeling and designed experiments

Y. Yang, B. P. Bewlay, S. L. Chen, M. R. Jackson, Y. A. Chang

Research output: Contribution to journal › Conference article › peer-review

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Abstract

Refractory Metal Intermetallic Composites (RMICs) based on the Nb-Si system are considered as candidates of next-generation high temperature materials (i.e. 7>1200°C). Ti and Cr have been shown to have beneficial effects on the oxidation resistance and mechanical properties of Nb-Si alloys. Phase equilibria in the Nb-Si-Ti system have been studied in detail. The present study has investigated multiphase equilibria in the Nb-Si-Ti alloys with Cr additions via an approach of integrating thermodynamic modeling with designed experiments. The alloying effects of Cr on the microstructure of the Nb-Si-Ti alloys are described using both phase equilibria and solidification paths that were calculated from the thermodynamic description of the Nb-Cr-Si-Ti system developed in the present study.

Original language	English
Pages (from-to)	293-298
Number of pages	6
Journal	Materials Research Society Symposium Proceedings
Volume	1128
State	Published - 2009
Externally published	Yes
Event	2008 MRS Fall Meeting - Boston, MA, United States Duration: Dec 2 2008 → Dec 4 2008

Cite this

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title = "Effect of Cr addition on the multiphase equilibria in the Nb-rich Nb-Si-Ti system - thermodynamic modeling and designed experiments",

abstract = "Refractory Metal Intermetallic Composites (RMICs) based on the Nb-Si system are considered as candidates of next-generation high temperature materials (i.e. 7>1200°C). Ti and Cr have been shown to have beneficial effects on the oxidation resistance and mechanical properties of Nb-Si alloys. Phase equilibria in the Nb-Si-Ti system have been studied in detail. The present study has investigated multiphase equilibria in the Nb-Si-Ti alloys with Cr additions via an approach of integrating thermodynamic modeling with designed experiments. The alloying effects of Cr on the microstructure of the Nb-Si-Ti alloys are described using both phase equilibria and solidification paths that were calculated from the thermodynamic description of the Nb-Cr-Si-Ti system developed in the present study.",

author = "Y. Yang and Bewlay, {B. P.} and Chen, {S. L.} and Jackson, {M. R.} and Chang, {Y. A.}",

year = "2009",

language = "English",

volume = "1128",

pages = "293--298",

journal = "Materials Research Society Symposium Proceedings",

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note = "2008 MRS Fall Meeting ; Conference date: 02-12-2008 Through 04-12-2008",

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TY - JOUR

T1 - Effect of Cr addition on the multiphase equilibria in the Nb-rich Nb-Si-Ti system - thermodynamic modeling and designed experiments

AU - Yang, Y.

AU - Bewlay, B. P.

AU - Chen, S. L.

AU - Jackson, M. R.

AU - Chang, Y. A.

PY - 2009

Y1 - 2009

N2 - Refractory Metal Intermetallic Composites (RMICs) based on the Nb-Si system are considered as candidates of next-generation high temperature materials (i.e. 7>1200°C). Ti and Cr have been shown to have beneficial effects on the oxidation resistance and mechanical properties of Nb-Si alloys. Phase equilibria in the Nb-Si-Ti system have been studied in detail. The present study has investigated multiphase equilibria in the Nb-Si-Ti alloys with Cr additions via an approach of integrating thermodynamic modeling with designed experiments. The alloying effects of Cr on the microstructure of the Nb-Si-Ti alloys are described using both phase equilibria and solidification paths that were calculated from the thermodynamic description of the Nb-Cr-Si-Ti system developed in the present study.

AB - Refractory Metal Intermetallic Composites (RMICs) based on the Nb-Si system are considered as candidates of next-generation high temperature materials (i.e. 7>1200°C). Ti and Cr have been shown to have beneficial effects on the oxidation resistance and mechanical properties of Nb-Si alloys. Phase equilibria in the Nb-Si-Ti system have been studied in detail. The present study has investigated multiphase equilibria in the Nb-Si-Ti alloys with Cr additions via an approach of integrating thermodynamic modeling with designed experiments. The alloying effects of Cr on the microstructure of the Nb-Si-Ti alloys are described using both phase equilibria and solidification paths that were calculated from the thermodynamic description of the Nb-Cr-Si-Ti system developed in the present study.

UR - http://www.scopus.com/inward/record.url?scp=70449365479&partnerID=8YFLogxK

M3 - Conference article

AN - SCOPUS:70449365479

SN - 0272-9172

VL - 1128

SP - 293

EP - 298

JO - Materials Research Society Symposium Proceedings

JF - Materials Research Society Symposium Proceedings

T2 - 2008 MRS Fall Meeting

Y2 - 2 December 2008 through 4 December 2008

ER -

Effect of Cr addition on the multiphase equilibria in the Nb-rich Nb-Si-Ti system - thermodynamic modeling and designed experiments

Abstract

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