High-temperature oxidation behaviour of Ti65 titanium alloy fabricated by laser direct energy deposition

被引：11
|
作者：
Sun, Junfeng [1 ]
Lu, Haifei [1 ]
Wang, Zhao [1 ]
Luo, Kaiyu [1 ]
Lu, Jinzhong [1 ]
机构：
[1] Jiangsu Univ, Sch Mech Engn, Zhenjiang 212013, Peoples R China
来源：
CORROSION SCIENCE | 2024年 / 229卷
关键词：
Laser direct energy deposition; Ti65; alloy; Oxidation kinetics; Mathematical modeling; Scale spallation; ISOTHERMAL OXIDATION; DEGREES-C; MICROSTRUCTURE; COMPOSITE; RESISTANCE; MECHANISM; EVOLUTION; DIFFUSION;
D O I：
10.1016/j.corsci.2024.111866
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The study investigated the high -temperature oxidation behaviour of Ti65 titanium alloy fabricated by laser direct energy deposition (LDED). Results showed that the formation of multiple oxide layers (OL) better protected the matrix at 650 degrees C, 750 degrees C, and 850 degrees C. The oxidation resistance improved with an activation energy of 282 +/- 1.4 kJ & sdot;mol- 1. A mathematical model to predict the relationship of oxidation was established through temperaturecompensated time parameters, and it accurately predicted the oxidation mass gain and oxygen dissolution zone (ODZ) thickness. Ultimately, the mechanism of high -temperature oxidation resistance has been methodically elucidated.
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收藏
页数：15
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