In-situ observation of solidification process in β-solidifying γ-TiAl-based alloy

Zhiping Li; Mengjia Yao; Tao He; Xianghong Liu; Binqiang Li; Liangshun Luo; Yanqing Su

doi:10.1016/j.matlet.2024.137638

In-situ observation of solidification process in β-solidifying γ-TiAl-based alloy

Zhiping Li
, Mengjia Yao
, Tao He
, Xianghong Liu^*
, Binqiang Li
, Liangshun Luo
, Yanqing Su

^*Corresponding author for this work

Western Superconducting Technologies Co., Ltd.
Harbin Institute of Technology
University of Science and Technology Beijing

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

1 Scopus citations

Abstract

The solidification process of Ti-40Al alloy, a representative β-solidifying γ-TiAl-based alloy, is investigated in-situ using high-temperature laser scanning confocal microscopy (HTLSCM). During the heating process, Ti-40Al alloy exhibits a complete β phase microstructure; however, peritectic α phase is observed during solidification. The occurrence of peritectic α phase is discussed and attributed to the segregation of Al under certain solidification conditions. This finding is further confirmed in the directional solidification of another β-solidifying γ-TiAl-based alloy, TNM alloy, and it provides valuable guidance for controlling the microstructure of β-solidifying γ-TiAl-based alloys.

Original language	English
Article number	137638
Journal	Materials Letters
Volume	378
DOIs	https://doi.org/10.1016/j.matlet.2024.137638
State	Published - 1 Jan 2025
Externally published	Yes

Keywords

Crystal growth
High-temperature laser scanning confocal microscopy
Solidification
TiAl-based alloys

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10.1016/j.matlet.2024.137638

Cite this

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title = "In-situ observation of solidification process in β-solidifying γ-TiAl-based alloy",

abstract = "The solidification process of Ti-40Al alloy, a representative β-solidifying γ-TiAl-based alloy, is investigated in-situ using high-temperature laser scanning confocal microscopy (HTLSCM). During the heating process, Ti-40Al alloy exhibits a complete β phase microstructure; however, peritectic α phase is observed during solidification. The occurrence of peritectic α phase is discussed and attributed to the segregation of Al under certain solidification conditions. This finding is further confirmed in the directional solidification of another β-solidifying γ-TiAl-based alloy, TNM alloy, and it provides valuable guidance for controlling the microstructure of β-solidifying γ-TiAl-based alloys.",

keywords = "Crystal growth, High-temperature laser scanning confocal microscopy, Solidification, TiAl-based alloys",

author = "Zhiping Li and Mengjia Yao and Tao He and Xianghong Liu and Binqiang Li and Liangshun Luo and Yanqing Su",

note = "Publisher Copyright: {\textcopyright} 2024 Elsevier B.V.",

year = "2025",

month = jan,

day = "1",

doi = "10.1016/j.matlet.2024.137638",

language = "英语",

volume = "378",

journal = "Materials Letters",

issn = "0167-577X",

publisher = "Elsevier B.V.",

}

TY - JOUR

T1 - In-situ observation of solidification process in β-solidifying γ-TiAl-based alloy

AU - Li, Zhiping

AU - Yao, Mengjia

AU - He, Tao

AU - Liu, Xianghong

AU - Li, Binqiang

AU - Luo, Liangshun

AU - Su, Yanqing

PY - 2025/1/1

Y1 - 2025/1/1

N2 - The solidification process of Ti-40Al alloy, a representative β-solidifying γ-TiAl-based alloy, is investigated in-situ using high-temperature laser scanning confocal microscopy (HTLSCM). During the heating process, Ti-40Al alloy exhibits a complete β phase microstructure; however, peritectic α phase is observed during solidification. The occurrence of peritectic α phase is discussed and attributed to the segregation of Al under certain solidification conditions. This finding is further confirmed in the directional solidification of another β-solidifying γ-TiAl-based alloy, TNM alloy, and it provides valuable guidance for controlling the microstructure of β-solidifying γ-TiAl-based alloys.

AB - The solidification process of Ti-40Al alloy, a representative β-solidifying γ-TiAl-based alloy, is investigated in-situ using high-temperature laser scanning confocal microscopy (HTLSCM). During the heating process, Ti-40Al alloy exhibits a complete β phase microstructure; however, peritectic α phase is observed during solidification. The occurrence of peritectic α phase is discussed and attributed to the segregation of Al under certain solidification conditions. This finding is further confirmed in the directional solidification of another β-solidifying γ-TiAl-based alloy, TNM alloy, and it provides valuable guidance for controlling the microstructure of β-solidifying γ-TiAl-based alloys.

KW - Crystal growth

KW - High-temperature laser scanning confocal microscopy

KW - Solidification

KW - TiAl-based alloys

UR - https://www.scopus.com/pages/publications/85207694766

U2 - 10.1016/j.matlet.2024.137638

DO - 10.1016/j.matlet.2024.137638

M3 - 文章

AN - SCOPUS:85207694766

SN - 0167-577X

VL - 378

JO - Materials Letters

JF - Materials Letters

M1 - 137638

ER -

In-situ observation of solidification process in β-solidifying γ-TiAl-based alloy

Abstract

Keywords

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