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

被引：0
|
作者：
Li, Zhiping [1 ,2 ,3 ]
Yao, Mengjia [2 ]
He, Tao [1 ]
Liu, Xianghong [1 ]
Li, Binqiang [1 ]
Luo, Liangshun [2 ]
Su, Yanqing [2 ]
机构：
[1] Western Superconducting Technol Co Ltd, Xian 710018, Peoples R China
[2] Harbin Inst Technol, Sch Mat Sci & Engn, Natl Key Lab Precis Hot Proc Met, Harbin 150001, Peoples R China
[3] Univ Sci & Technol Beijing, State Key Lab Adv Met & Mat, Beijing 100083, Peoples R China
来源：
MATERIALS LETTERS | 2025年 / 378卷
关键词：
TiAl-based alloys; Solidification; High-temperature laser scanning confocal; microscopy; Crystal growth;
D O I：
10.1016/j.matlet.2024.137638
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The solidification process of Ti-40Al alloy, a representative (3-solidifying gamma-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 (3 phase microstructure; however, peritectic alpha phase is observed during solidification. The occurrence of peritectic alpha 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 (3-solidifying gamma-TiAl-based alloy, TNM alloy, and it provides valuable guidance for controlling the microstructure of (3-solidifying gamma-TiAlbased alloys.
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页数：4
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