Microstructural control of TiAl alloys containing Mo with different aluminum content

C. G. Song; J. E. Lee; S. H. Yi; J. Zhu; F. Zhang; Y. B. Song; J. S. Park

doi:10.1166/sam.2017.2837

Microstructural control of TiAl alloys containing Mo with different aluminum content

C. G. Song, J. E. Lee, S. H. Yi, J. Zhu, F. Zhang, Y. B. Song, J. S. Park

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

Abstract

TiAl alloys have received a lot of attention due to their high specific strength, wide applicability and their potential to replace Ni based superalloys. However, the TiAl alloys exhibits low creep properties at ~800 °C and brittleness at room temperature. In the present study, phase equilibria of the Ti-Al-Mo system were calculated via Pandat™ software. A few alloy compositions were selected for experimental study and the corresponding microstructures were investigated. The two-phase or three-phase microstructures were composed of α, β and γ which can be obtained through proper adjustment of the alloy composition in the Ti-Al-Mo system. The phase selection and control are discussed in terms of isothermal phase diagram.

Original language	English
Pages (from-to)	1960-1967
Number of pages	8
Journal	Science of Advanced Materials
Volume	9
Issue number	11
DOIs	https://doi.org/10.1166/sam.2017.2837
State	Published - 1 Nov 2017

Keywords

Heat treatment
Microstructure
Phase transformation
TiAl alloy

Access to Document

10.1166/sam.2017.2837

Cite this

@article{5246d77d47014b21a96ac205efdf6f79,

title = "Microstructural control of TiAl alloys containing Mo with different aluminum content",

abstract = "TiAl alloys have received a lot of attention due to their high specific strength, wide applicability and their potential to replace Ni based superalloys. However, the TiAl alloys exhibits low creep properties at ~800 °C and brittleness at room temperature. In the present study, phase equilibria of the Ti-Al-Mo system were calculated via Pandat{\texttrademark} software. A few alloy compositions were selected for experimental study and the corresponding microstructures were investigated. The two-phase or three-phase microstructures were composed of α, β and γ which can be obtained through proper adjustment of the alloy composition in the Ti-Al-Mo system. The phase selection and control are discussed in terms of isothermal phase diagram.",

keywords = "Heat treatment, Microstructure, Phase transformation, TiAl alloy",

author = "Song, {C. G.} and Lee, {J. E.} and Yi, {S. H.} and J. Zhu and F. Zhang and Song, {Y. B.} and Park, {J. S.}",

note = "Publisher Copyright: {\textcopyright} 2017 by American Scientific Publishers.",

year = "2017",

month = nov,

day = "1",

doi = "10.1166/sam.2017.2837",

language = "English",

volume = "9",

pages = "1960--1967",

journal = "Science of Advanced Materials",

issn = "1947-2935",

publisher = "American Scientific Publishers",

number = "11",

}

TY - JOUR

T1 - Microstructural control of TiAl alloys containing Mo with different aluminum content

AU - Song, C. G.

AU - Lee, J. E.

AU - Yi, S. H.

AU - Zhu, J.

AU - Zhang, F.

AU - Song, Y. B.

AU - Park, J. S.

PY - 2017/11/1

Y1 - 2017/11/1

N2 - TiAl alloys have received a lot of attention due to their high specific strength, wide applicability and their potential to replace Ni based superalloys. However, the TiAl alloys exhibits low creep properties at ~800 °C and brittleness at room temperature. In the present study, phase equilibria of the Ti-Al-Mo system were calculated via Pandat™ software. A few alloy compositions were selected for experimental study and the corresponding microstructures were investigated. The two-phase or three-phase microstructures were composed of α, β and γ which can be obtained through proper adjustment of the alloy composition in the Ti-Al-Mo system. The phase selection and control are discussed in terms of isothermal phase diagram.

AB - TiAl alloys have received a lot of attention due to their high specific strength, wide applicability and their potential to replace Ni based superalloys. However, the TiAl alloys exhibits low creep properties at ~800 °C and brittleness at room temperature. In the present study, phase equilibria of the Ti-Al-Mo system were calculated via Pandat™ software. A few alloy compositions were selected for experimental study and the corresponding microstructures were investigated. The two-phase or three-phase microstructures were composed of α, β and γ which can be obtained through proper adjustment of the alloy composition in the Ti-Al-Mo system. The phase selection and control are discussed in terms of isothermal phase diagram.

KW - Heat treatment

KW - Microstructure

KW - Phase transformation

KW - TiAl alloy

UR - http://www.scopus.com/inward/record.url?scp=85040451986&partnerID=8YFLogxK

U2 - 10.1166/sam.2017.2837

DO - 10.1166/sam.2017.2837

M3 - Article

AN - SCOPUS:85040451986

SN - 1947-2935

VL - 9

SP - 1960

EP - 1967

JO - Science of Advanced Materials

JF - Science of Advanced Materials

IS - 11

ER -

Microstructural control of TiAl alloys containing Mo with different aluminum content

Abstract

Keywords

Access to Document

Other files and links

Fingerprint

Cite this