Surface Forming Criteria of Ti-6AL-4V Titanium Alloy under Laser Loading

Autor: Jiawei Cong, Xumei Wang, Yanqun Tong, Yao Hongbing, Xia Ye, Pengyu Wei, Fei Yin
Rok vydání: 2021
Předmět:
plastic deformation
Surface (mathematics)
Technology
titanium alloy
Materials science
Morphology (linguistics)
QH301-705.5
QC1-999
rebound
02 engineering and technology
law.invention
law
0202 electrical engineering
electronic engineering
information engineering
General Materials Science
Spallation
Biology (General)
Composite material
QD1-999
Instrumentation
Fluid Flow and Transfer Processes
Physics
laser shock
Process Chemistry and Technology
technology
industry
and agriculture
General Engineering
Titanium alloy
Plasma
Engineering (General). Civil engineering (General)
equipment and supplies
021001 nanoscience & nanotechnology
Laser
spallation
Computer Science Applications
Shock (mechanics)
Chemistry
020201 artificial intelligence & image processing
TA1-2040
Deformation (engineering)
0210 nano-technology
Zdroj: Applied Sciences
Volume 11
Issue 12
Applied Sciences, Vol 11, Iss 5406, p 5406 (2021)
ISSN: 2076-3417
Popis: In order to study the spallation phenomenon of titanium alloy under the shock of nanosecond laser, the Neodymium-Yttrium-Aluminum Garnet laser was used to carry out laser shock experiments on the surface of titanium alloy. By observing and measuring the surface morphology of the target material, the forming factors and the changes of the surface morphology under different parameter settings, the forming criteria of the titanium alloy were obtained. The results show that under the single variable method, the change of laser energy can affect the target shape variable, and there is a positive correlation between them. When the thickness was greater than or equal to 0.08 mm, no obvious cracks were found in the targets. Moreover, the number of impact times was the key factor for the target deformation
with the growth of impact times, the target deformation gradually became larger until the crack appeared. The larger the diameter of the spot, the more likely the target was to undergo plastic deformation. The surface of titanium alloy with a thickness of 0.08 mm appeared to rebound under specific laser shock condition. The changes in the back of the target material were observed in real time through a high-speed camera, and the plasma induced by the laser was observed in the process. This study is based on the results of previous studies to obtain the titanium alloy forming criteria, which provides a basis for the setting of laser parameters and the thickness of the target when the nanosecond laser impacts the Ti-6AL-4V target.
Databáze: OpenAIRE
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