Numerical Study for Creep Aging Tensile Process of 7055-TO Al Alloy Assisted by Ultrasonic Vibration

被引：0

作者：

Zuo, Duquan ^{[1
,2
]}

Fu, Haoran ^{[1
]}

Han, Yanjie ^{[1
]}

Jin, Shaoqing ^{[1
]}

Ma, Guoling ^{[1
]}

Ye, Ti ^{[1
]}

机构：

[1] Civil Aviat Flight Univ China, Coll Aviat Engn, Guanghan 618307, Sichuan, Peoples R China

[2] Chongqing Three Gorges Univ, Sch Mech Engn, Chongqing 404100, Peoples R China

来源：

PROCEEDINGS OF THE 8TH INTERNATIONAL CONFERENCE ON MANUFACTURING, MATERIAL AND METALLURGICAL ENGINEERING, ICMMME 2024 | 2025年

基金：

中国博士后科学基金;

关键词：

Al alloy; Ultrasonic vibration; Creep aging tensile; Stress superposition; Numerical simulation;

D O I：

10.1007/978-3-031-78295-4_6

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

In this paper, 7055-TO Al alloy is taken as the research object and the two processes of ultrasonic vibration and creep aging forming are combined. The numerical simulation method is used to investigate the influence of vibration parameters and stress superposition effect on the mechanical properties and deformation behavior of the creep aging tensile (CAT) process for the specimen, and the forming force effect of the ultrasonic-assisted creep aging tensile (UVCAT) specimen and the CAT specimen are analyzed. It is found that the 7055-TO alloys are treated by UVCAT, the input of too high or too low ultrasonic vibration energy will lead to the increase of metal flowstress limit. When the frequencyw of 20 kHz and the amplitude u of 12 mm are determined, the ultimate stress and average stress of the UVCAT specimen are reduced by 7% and 26%, respectively. The corresponding effective softening amplitude reaches the maximum of 26.5 MPa. It indicates that the stress superposition effect of the specimen treated by UVCAT is the most significant and its creep age tensile forming effect is the best.

引用

页码：49 / 58

页数：10

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