Microstructural control of Ti-Al-Mo-Nb alloy system with respect to variation of B

Minseok Kim; Kwangsoo Choi; Jun Zhu; Fan Zhang; Youngbuem Song; Youngwon Kim; Seonghoon Yi; Joon Sik Park

doi:10.1007/s12540-017-6667-z

Microstructural control of Ti-Al-Mo-Nb alloy system with respect to variation of B

Minseok Kim, Kwangsoo Choi, Jun Zhu, Fan Zhang, Youngbuem Song, Youngwon Kim, Seonghoon Yi, Joon Sik Park

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

4 Scopus citations

Abstract

In the current study, phase stability of Ti-Al-Mo-Nb alloys was investigated, and the effect of B addition was examined for cast alloys. The fabricated cast alloys were mainly composed of α₂ / γ lamellar with a β phase, when they were heat treated at 1100 °C followed by air cooling, the alloy was composed of α2 / γ lamellar with γ+β necklace phase at the colony boundary for the Ti-45Al-3Mo-2Nb-1B alloy, and the colony size was refined to ~ 20 μm. In order to identify the effect of the microstructures on mechanical strength, compressive tests were performed on the fabricated alloys of Ti-45Al-3Mo-2Nb and Ti-45Al-3Mo-2Nb-1B at room temperature and at 800 °C. The microstructural variations and phase stability were discussed in terms of pseudo-binary phase diagram calculated by Pandat software™.

Original language	English
Pages (from-to)	625-631
Number of pages	7
Journal	Metals and Materials International
Volume	23
Issue number	4
DOIs	https://doi.org/10.1007/s12540-017-6667-z
State	Published - 1 Jul 2017

Keywords

alloys
casting
microstructure
scanning electron microscopy (SEM)

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10.1007/s12540-017-6667-z

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title = "Microstructural control of Ti-Al-Mo-Nb alloy system with respect to variation of B",

abstract = "In the current study, phase stability of Ti-Al-Mo-Nb alloys was investigated, and the effect of B addition was examined for cast alloys. The fabricated cast alloys were mainly composed of α2 / γ lamellar with a β phase, when they were heat treated at 1100 °C followed by air cooling, the alloy was composed of α2 / γ lamellar with γ+β necklace phase at the colony boundary for the Ti-45Al-3Mo-2Nb-1B alloy, and the colony size was refined to ~ 20 μm. In order to identify the effect of the microstructures on mechanical strength, compressive tests were performed on the fabricated alloys of Ti-45Al-3Mo-2Nb and Ti-45Al-3Mo-2Nb-1B at room temperature and at 800 °C. The microstructural variations and phase stability were discussed in terms of pseudo-binary phase diagram calculated by Pandat software{\texttrademark}.",

keywords = "alloys, casting, microstructure, scanning electron microscopy (SEM)",

author = "Minseok Kim and Kwangsoo Choi and Jun Zhu and Fan Zhang and Youngbuem Song and Youngwon Kim and Seonghoon Yi and Park, {Joon Sik}",

note = "Publisher Copyright: {\textcopyright} 2017, The Korean Institute of Metals and Materials and Springer Science+Business Media B.V.",

year = "2017",

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doi = "10.1007/s12540-017-6667-z",

language = "English",

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journal = "Metals and Materials International",

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TY - JOUR

T1 - Microstructural control of Ti-Al-Mo-Nb alloy system with respect to variation of B

AU - Kim, Minseok

AU - Choi, Kwangsoo

AU - Zhu, Jun

AU - Zhang, Fan

AU - Song, Youngbuem

AU - Kim, Youngwon

AU - Yi, Seonghoon

AU - Park, Joon Sik

PY - 2017/7/1

Y1 - 2017/7/1

N2 - In the current study, phase stability of Ti-Al-Mo-Nb alloys was investigated, and the effect of B addition was examined for cast alloys. The fabricated cast alloys were mainly composed of α2 / γ lamellar with a β phase, when they were heat treated at 1100 °C followed by air cooling, the alloy was composed of α2 / γ lamellar with γ+β necklace phase at the colony boundary for the Ti-45Al-3Mo-2Nb-1B alloy, and the colony size was refined to ~ 20 μm. In order to identify the effect of the microstructures on mechanical strength, compressive tests were performed on the fabricated alloys of Ti-45Al-3Mo-2Nb and Ti-45Al-3Mo-2Nb-1B at room temperature and at 800 °C. The microstructural variations and phase stability were discussed in terms of pseudo-binary phase diagram calculated by Pandat software™.

AB - In the current study, phase stability of Ti-Al-Mo-Nb alloys was investigated, and the effect of B addition was examined for cast alloys. The fabricated cast alloys were mainly composed of α2 / γ lamellar with a β phase, when they were heat treated at 1100 °C followed by air cooling, the alloy was composed of α2 / γ lamellar with γ+β necklace phase at the colony boundary for the Ti-45Al-3Mo-2Nb-1B alloy, and the colony size was refined to ~ 20 μm. In order to identify the effect of the microstructures on mechanical strength, compressive tests were performed on the fabricated alloys of Ti-45Al-3Mo-2Nb and Ti-45Al-3Mo-2Nb-1B at room temperature and at 800 °C. The microstructural variations and phase stability were discussed in terms of pseudo-binary phase diagram calculated by Pandat software™.

KW - alloys

KW - casting

KW - microstructure

KW - scanning electron microscopy (SEM)

UR - http://www.scopus.com/inward/record.url?scp=85023625963&partnerID=8YFLogxK

U2 - 10.1007/s12540-017-6667-z

DO - 10.1007/s12540-017-6667-z

M3 - Article

AN - SCOPUS:85023625963

SN - 1598-9623

VL - 23

SP - 625

EP - 631

JO - Metals and Materials International

JF - Metals and Materials International

IS - 4

ER -

Microstructural control of Ti-Al-Mo-Nb alloy system with respect to variation of B

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