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

Hanbat National University
ComputermLLC
Korean Agency for Defense Development

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 \textasciitilde{}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 - https://www.scopus.com/pages/publications/85040451986

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