A high-efficiency heat treatment method for high-Nb TiAl-based alloy to obtain the fine (α2+γ) lamellar structure

Yiyuan Chang; Shulin Dong; Yingdong Qu; Ruirun Chen; Guanglong Li; Wei Zhang; Siruo Zhang; Shibing Liu

doi:10.1016/j.mtcomm.2025.114445

A high-efficiency heat treatment method for high-Nb TiAl-based alloy to obtain the fine (α₂+γ) lamellar structure

Yiyuan Chang
, Shulin Dong^*
, Yingdong Qu
, Ruirun Chen
, Guanglong Li
, Wei Zhang
, Siruo Zhang
, Shibing Liu^*

^*Corresponding author for this work

Shenyang University of Technology
National Key Laboratory of Advanced Casting Technologies
Shenyang Aerospace University
Harbin Institute of Technology

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

1 Scopus citations

Abstract

In this paper, the typical Ti-44Al-8Nb-0.1B alloy is studied, and a method for obtaining fine (α₂+γ) lamellar structure in a short time at low temperature is found. First, the alloy is water quenching (WQ) after holding at 1300 ^°C for 30 min to obtain a supersaturated α₂ phase. Then the alloy is WQ at 800 ^°C with or without stress for different holding time. Finally, it is found that under the condition of 800 ^°C with stress, the (α₂+γ) lamellar structure of the alloy will accelerate the growth, and a lamellar structure is formed in a very short time, and the grains is refined. In addition, the reasons for the accelerated growth and refinement of the lamellar structure are also studied.

Original language	English
Article number	114445
Journal	Materials Today Communications
Volume	49
DOIs	https://doi.org/10.1016/j.mtcomm.2025.114445
State	Published - Dec 2025
Externally published	Yes

Keywords

(α+γ) lamellae
Annealing
Quenching
Stress
TiAl

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10.1016/j.mtcomm.2025.114445

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title = "A high-efficiency heat treatment method for high-Nb TiAl-based alloy to obtain the fine (α2+γ) lamellar structure",

abstract = "In this paper, the typical Ti-44Al-8Nb-0.1B alloy is studied, and a method for obtaining fine (α2+γ) lamellar structure in a short time at low temperature is found. First, the alloy is water quenching (WQ) after holding at 1300 °C for 30 min to obtain a supersaturated α2 phase. Then the alloy is WQ at 800 °C with or without stress for different holding time. Finally, it is found that under the condition of 800 °C with stress, the (α2+γ) lamellar structure of the alloy will accelerate the growth, and a lamellar structure is formed in a very short time, and the grains is refined. In addition, the reasons for the accelerated growth and refinement of the lamellar structure are also studied.",

keywords = "(α+γ) lamellae, Annealing, Quenching, Stress, TiAl",

author = "Yiyuan Chang and Shulin Dong and Yingdong Qu and Ruirun Chen and Guanglong Li and Wei Zhang and Siruo Zhang and Shibing Liu",

note = "Publisher Copyright: {\textcopyright} 2025 Elsevier Ltd.",

year = "2025",

month = dec,

doi = "10.1016/j.mtcomm.2025.114445",

language = "英语",

volume = "49",

journal = "Materials Today Communications",

issn = "2352-4928",

publisher = "Elsevier Ltd",

}

TY - JOUR

T1 - A high-efficiency heat treatment method for high-Nb TiAl-based alloy to obtain the fine (α2+γ) lamellar structure

AU - Chang, Yiyuan

AU - Dong, Shulin

AU - Qu, Yingdong

AU - Chen, Ruirun

AU - Li, Guanglong

AU - Zhang, Wei

AU - Zhang, Siruo

AU - Liu, Shibing

PY - 2025/12

Y1 - 2025/12

N2 - In this paper, the typical Ti-44Al-8Nb-0.1B alloy is studied, and a method for obtaining fine (α2+γ) lamellar structure in a short time at low temperature is found. First, the alloy is water quenching (WQ) after holding at 1300 °C for 30 min to obtain a supersaturated α2 phase. Then the alloy is WQ at 800 °C with or without stress for different holding time. Finally, it is found that under the condition of 800 °C with stress, the (α2+γ) lamellar structure of the alloy will accelerate the growth, and a lamellar structure is formed in a very short time, and the grains is refined. In addition, the reasons for the accelerated growth and refinement of the lamellar structure are also studied.

AB - In this paper, the typical Ti-44Al-8Nb-0.1B alloy is studied, and a method for obtaining fine (α2+γ) lamellar structure in a short time at low temperature is found. First, the alloy is water quenching (WQ) after holding at 1300 °C for 30 min to obtain a supersaturated α2 phase. Then the alloy is WQ at 800 °C with or without stress for different holding time. Finally, it is found that under the condition of 800 °C with stress, the (α2+γ) lamellar structure of the alloy will accelerate the growth, and a lamellar structure is formed in a very short time, and the grains is refined. In addition, the reasons for the accelerated growth and refinement of the lamellar structure are also studied.

KW - (α+γ) lamellae

KW - Annealing

KW - Quenching

KW - Stress

KW - TiAl

UR - https://www.scopus.com/pages/publications/105023952818

U2 - 10.1016/j.mtcomm.2025.114445

DO - 10.1016/j.mtcomm.2025.114445

M3 - 文章

AN - SCOPUS:105023952818

SN - 2352-4928

VL - 49

JO - Materials Today Communications

JF - Materials Today Communications

M1 - 114445

ER -

A high-efficiency heat treatment method for high-Nb TiAl-based alloy to obtain the fine (α₂+γ) lamellar structure

Abstract

Keywords

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