Quantitative evaluation of microstructure in Mo-Si-B-TiC alloy produced by melting and tilt casting method

Sojiro Uemura; Takateru Yamamuro; Joung Wook Kim; Yasuhiro Morizono; Sadahiro Tsurekawa; Kyosuke Yoshimi

doi:10.2320/jinstmet.J2016010

Quantitative evaluation of microstructure in Mo-Si-B-TiC alloy produced by melting and tilt casting method

Sojiro Uemura, Takateru Yamamuro, Joung Wook Kim, Yasuhiro Morizono, Sadahiro Tsurekawa, Kyosuke Yoshimi

ENG - Materials Science

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

3 Citations (Scopus)

Abstract

Mo-Si-B-TiC alloys have been produced as candidates for a ultrahigh-temperature materials to replace Ni-base superalloys. We have quantitatively investigated the microstructure of a Mo-Si-B-TiC alloy composition. Mo-5Si-10B-10TiC (65Mo alloy) (at%) produced via arc-melting and tilt casting techniques. The starting material was composed of four constituent phases: Mo solid solution (Moss), Mo₅SiB₂, (Ti, Mo)C_x, (Mo, Ti)₂C, and their eutectic (or peritecteutectic) phases. The compositions of these constituent phases were determined by EPMA. SEM-EBSD measurements revealed that T₂ and (Ti, Mo)C_x phases have orientation relationships with Mo phase: {11-0}_Mo//(001)_T2, 〈111〉_Mo//〈100〉_T2 and {11-0}_Mo//{11-1}_{(Ti, Mo)Cx}, 〈111〉_Mo//〈110〉 _{(Ti, Mo)Cx}. Furthermore, 3-dimensional SEM examination combined with the FIB serial sectioning technique demonstrated that the T₂ phase had a thin plate shape of orientation (001) for the plate surfaces and {100} for side ones.

Original language	English
Pages (from-to)	529-538
Number of pages	10
Journal	Nippon Kinzoku Gakkaishi/Journal of the Japan Institute of Metals
Volume	80
Issue number	8
DOIs	https://doi.org/10.2320/jinstmet.J2016010
Publication status	Published - 2016

Keywords

Microstructure
Molybdenum
Molybdenum-silicon-boron alloys
Three-dimensional analysis
Titanium carbide

ASJC Scopus subject areas

Condensed Matter Physics
Mechanics of Materials
Metals and Alloys
Materials Chemistry

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Quantitative evaluation of microstructure in Mo-Si-B-TiC alloy produced by melting and tilt casting method. / Uemura, Sojiro; Yamamuro, Takateru; Kim, Joung Wook; Morizono, Yasuhiro; Tsurekawa, Sadahiro; Yoshimi, Kyosuke.

In: Nippon Kinzoku Gakkaishi/Journal of the Japan Institute of Metals, Vol. 80, No. 8, 2016, p. 529-538.

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

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title = "Quantitative evaluation of microstructure in Mo-Si-B-TiC alloy produced by melting and tilt casting method",

abstract = "Mo-Si-B-TiC alloys have been produced as candidates for a ultrahigh-temperature materials to replace Ni-base superalloys. We have quantitatively investigated the microstructure of a Mo-Si-B-TiC alloy composition. Mo-5Si-10B-10TiC (65Mo alloy) (at%) produced via arc-melting and tilt casting techniques. The starting material was composed of four constituent phases: Mo solid solution (Moss), Mo5SiB2, (Ti, Mo)Cx, (Mo, Ti)2C, and their eutectic (or peritecteutectic) phases. The compositions of these constituent phases were determined by EPMA. SEM-EBSD measurements revealed that T2 and (Ti, Mo)Cx phases have orientation relationships with Mo phase: {11-0}Mo//(001)T2, 〈111〉Mo//〈100〉T2 and {11-0}Mo//{11-1}(Ti, Mo)Cx, 〈111〉Mo//〈110〉 (Ti, Mo)Cx. Furthermore, 3-dimensional SEM examination combined with the FIB serial sectioning technique demonstrated that the T2 phase had a thin plate shape of orientation (001) for the plate surfaces and {100} for side ones.",

keywords = "Microstructure, Molybdenum, Molybdenum-silicon-boron alloys, Three-dimensional analysis, Titanium carbide",

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AU - Tsurekawa, Sadahiro

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N2 - Mo-Si-B-TiC alloys have been produced as candidates for a ultrahigh-temperature materials to replace Ni-base superalloys. We have quantitatively investigated the microstructure of a Mo-Si-B-TiC alloy composition. Mo-5Si-10B-10TiC (65Mo alloy) (at%) produced via arc-melting and tilt casting techniques. The starting material was composed of four constituent phases: Mo solid solution (Moss), Mo5SiB2, (Ti, Mo)Cx, (Mo, Ti)2C, and their eutectic (or peritecteutectic) phases. The compositions of these constituent phases were determined by EPMA. SEM-EBSD measurements revealed that T2 and (Ti, Mo)Cx phases have orientation relationships with Mo phase: {11-0}Mo//(001)T2, 〈111〉Mo//〈100〉T2 and {11-0}Mo//{11-1}(Ti, Mo)Cx, 〈111〉Mo//〈110〉 (Ti, Mo)Cx. Furthermore, 3-dimensional SEM examination combined with the FIB serial sectioning technique demonstrated that the T2 phase had a thin plate shape of orientation (001) for the plate surfaces and {100} for side ones.

AB - Mo-Si-B-TiC alloys have been produced as candidates for a ultrahigh-temperature materials to replace Ni-base superalloys. We have quantitatively investigated the microstructure of a Mo-Si-B-TiC alloy composition. Mo-5Si-10B-10TiC (65Mo alloy) (at%) produced via arc-melting and tilt casting techniques. The starting material was composed of four constituent phases: Mo solid solution (Moss), Mo5SiB2, (Ti, Mo)Cx, (Mo, Ti)2C, and their eutectic (or peritecteutectic) phases. The compositions of these constituent phases were determined by EPMA. SEM-EBSD measurements revealed that T2 and (Ti, Mo)Cx phases have orientation relationships with Mo phase: {11-0}Mo//(001)T2, 〈111〉Mo//〈100〉T2 and {11-0}Mo//{11-1}(Ti, Mo)Cx, 〈111〉Mo//〈110〉 (Ti, Mo)Cx. Furthermore, 3-dimensional SEM examination combined with the FIB serial sectioning technique demonstrated that the T2 phase had a thin plate shape of orientation (001) for the plate surfaces and {100} for side ones.

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KW - Titanium carbide

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