Experimental study of Moss-T2, Moss- Mo3Si-T2, and Mo3Si-T2 eutectic reactions in Mo-rich Mo-Si-B alloys

Seong Ho Ha; Kyosuke Yoshimi; Junya Nakamura; Takahiro Kaneko; Kouichi Maruyama; Rong Tu; Takashi Goto

doi:10.1016/j.jallcom.2014.01.089

Experimental study of Mo_ss-T₂, Mo_ss- Mo₃Si-T₂, and Mo₃Si-T₂ eutectic reactions in Mo-rich Mo-Si-B alloys

Seong Ho Ha, Kyosuke Yoshimi, Junya Nakamura, Takahiro Kaneko, Kouichi Maruyama, Rong Tu, Takashi Goto

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

25 Citations (Scopus)

Abstract

The phase formation behavior during solidification of Mo-Si-B ternary alloys in the Mo-rich compositional portion was experimentally examined with special attention to the Mo_ss-T₂ and Mo-Mo ₃Si-T₂ eutectics. Primary phases observed in this study were in very good agreement with those shown in a liquidus projection thermodynamically calculated by Yang and Chang. A Mo-9.5Si-14.2B (at.%) alloy, which has a composition close to the Mo_ss-T₂ eutectic point, had two specific microstructural areas consisting of a superfine Mo _ss-T₂ eutectic and a fine Mo_ss-Mo ₃Si-T₂ three-phase eutectic. A Mo-19.1Si-6.5B alloy aimed to the Mo_ss-Mo₃Si-T₂ eutectic point also had a fine Mo₃Si-T₂ eutectic and a Mo_ss-Mo ₃Si-T₂ eutectic. The compositions of the eutectic phases were determined by electron probe micro-analysis calibrated using a multipoint measurement method and details of the solidification pathways in the Mo-rich compositional portion are discussed based on the experimentally obtained results compared with the liquidus projection.

Original language	English
Pages (from-to)	52-59
Number of pages	8
Journal	Journal of Alloys and Compounds
Volume	594
DOIs	https://doi.org/10.1016/j.jallcom.2014.01.089
Publication status	Published - 2014 May 5

Keywords

Intermetallics
Microstructure
Scanning electron microscopy
Transition metal alloys and compounds
Transmission electron microscopy

ASJC Scopus subject areas

Mechanics of Materials
Mechanical Engineering
Metals and Alloys
Materials Chemistry

Access to Document

10.1016/j.jallcom.2014.01.089

Cite this

@article{475068dd9c614d38b32921e6d5f53ff5,

title = "Experimental study of Moss-T2, Moss- Mo3Si-T2, and Mo3Si-T2 eutectic reactions in Mo-rich Mo-Si-B alloys",

abstract = "The phase formation behavior during solidification of Mo-Si-B ternary alloys in the Mo-rich compositional portion was experimentally examined with special attention to the Moss-T2 and Mo-Mo 3Si-T2 eutectics. Primary phases observed in this study were in very good agreement with those shown in a liquidus projection thermodynamically calculated by Yang and Chang. A Mo-9.5Si-14.2B (at.%) alloy, which has a composition close to the Moss-T2 eutectic point, had two specific microstructural areas consisting of a superfine Mo ss-T2 eutectic and a fine Moss-Mo 3Si-T2 three-phase eutectic. A Mo-19.1Si-6.5B alloy aimed to the Moss-Mo3Si-T2 eutectic point also had a fine Mo3Si-T2 eutectic and a Moss-Mo 3Si-T2 eutectic. The compositions of the eutectic phases were determined by electron probe micro-analysis calibrated using a multipoint measurement method and details of the solidification pathways in the Mo-rich compositional portion are discussed based on the experimentally obtained results compared with the liquidus projection.",

keywords = "Intermetallics, Microstructure, Scanning electron microscopy, Transition metal alloys and compounds, Transmission electron microscopy",

author = "Ha, {Seong Ho} and Kyosuke Yoshimi and Junya Nakamura and Takahiro Kaneko and Kouichi Maruyama and Rong Tu and Takashi Goto",

note = "Funding Information: This work was supported by the funding program for Next Generation World-Leading Researchers (NEXT Program) in Japan (No. GR017) and a Grant-in-Aid for Scientific Research (No. 23·4005) from the Japan Society for the Promotion of Science (JSPS).",

year = "2014",

month = may,

day = "5",

doi = "10.1016/j.jallcom.2014.01.089",

language = "English",

volume = "594",

pages = "52--59",

journal = "Journal of Alloys and Compounds",

issn = "0925-8388",

publisher = "Elsevier BV",

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TY - JOUR

T1 - Experimental study of Moss-T2, Moss- Mo3Si-T2, and Mo3Si-T2 eutectic reactions in Mo-rich Mo-Si-B alloys

AU - Ha, Seong Ho

AU - Yoshimi, Kyosuke

AU - Nakamura, Junya

AU - Kaneko, Takahiro

AU - Maruyama, Kouichi

AU - Tu, Rong

AU - Goto, Takashi

N1 - Funding Information: This work was supported by the funding program for Next Generation World-Leading Researchers (NEXT Program) in Japan (No. GR017) and a Grant-in-Aid for Scientific Research (No. 23·4005) from the Japan Society for the Promotion of Science (JSPS).

PY - 2014/5/5

Y1 - 2014/5/5

N2 - The phase formation behavior during solidification of Mo-Si-B ternary alloys in the Mo-rich compositional portion was experimentally examined with special attention to the Moss-T2 and Mo-Mo 3Si-T2 eutectics. Primary phases observed in this study were in very good agreement with those shown in a liquidus projection thermodynamically calculated by Yang and Chang. A Mo-9.5Si-14.2B (at.%) alloy, which has a composition close to the Moss-T2 eutectic point, had two specific microstructural areas consisting of a superfine Mo ss-T2 eutectic and a fine Moss-Mo 3Si-T2 three-phase eutectic. A Mo-19.1Si-6.5B alloy aimed to the Moss-Mo3Si-T2 eutectic point also had a fine Mo3Si-T2 eutectic and a Moss-Mo 3Si-T2 eutectic. The compositions of the eutectic phases were determined by electron probe micro-analysis calibrated using a multipoint measurement method and details of the solidification pathways in the Mo-rich compositional portion are discussed based on the experimentally obtained results compared with the liquidus projection.

AB - The phase formation behavior during solidification of Mo-Si-B ternary alloys in the Mo-rich compositional portion was experimentally examined with special attention to the Moss-T2 and Mo-Mo 3Si-T2 eutectics. Primary phases observed in this study were in very good agreement with those shown in a liquidus projection thermodynamically calculated by Yang and Chang. A Mo-9.5Si-14.2B (at.%) alloy, which has a composition close to the Moss-T2 eutectic point, had two specific microstructural areas consisting of a superfine Mo ss-T2 eutectic and a fine Moss-Mo 3Si-T2 three-phase eutectic. A Mo-19.1Si-6.5B alloy aimed to the Moss-Mo3Si-T2 eutectic point also had a fine Mo3Si-T2 eutectic and a Moss-Mo 3Si-T2 eutectic. The compositions of the eutectic phases were determined by electron probe micro-analysis calibrated using a multipoint measurement method and details of the solidification pathways in the Mo-rich compositional portion are discussed based on the experimentally obtained results compared with the liquidus projection.

KW - Intermetallics

KW - Microstructure

KW - Scanning electron microscopy

KW - Transition metal alloys and compounds

KW - Transmission electron microscopy

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JO - Journal of Alloys and Compounds

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