scholarly journals Femtosecond laser peening of 2024 aluminum alloy without a sacrificial overlay under atmospheric conditions

2017 ◽  
Vol 29 (1) ◽  
pp. 012005 ◽  
Keyword(s):  
Aluminum Alloy ◽  
Femtosecond Laser ◽  
Laser Peening ◽  
Atmospheric Conditions ◽  
2024 Aluminum Alloy

scholarly journals Improving Fatigue Performance of Laser-Welded 2024-T3 Aluminum Alloy Using Dry Laser Peening

Metals ◽  
2019 ◽  
Vol 9 (11) ◽  
pp. 1192 ◽  
Author(s):  
Sano ◽  
Eimura ◽  
Hirose ◽  
Kawahito ◽  
Katayama ◽  
...  
Keyword(s):  
Aluminum Alloy ◽  
Weld Metal ◽  
Laser Pulses ◽  
Femtosecond Laser Pulses ◽  
Fatigue Performance ◽  
Laser Peening ◽  
Residual Tensile Stress ◽  
Atmospheric Conditions ◽  
2024 Aluminum Alloy ◽  
Welding Defects

The purpose of the present study was to verify the effectiveness of dry laser peening (DryLP), which is the peening technique without a sacrificial overlay under atmospheric conditions using femtosecond laser pulses on the mechanical properties such as hardness, residual stress, and fatigue performance of laser-welded 2024 aluminum alloy containing welding defects such as undercuts and blowholes. After DryLP treatment of the laser-welded 2024 aluminum alloy, the softened weld metal recovered to the original hardness of base metal, while residual tensile stress in the weld metal and heat-affected zone changed to compressive stresses. As a result, DryLP treatment improved the fatigue performances of welded specimens with and without the weld reinforcement almost equally. The fatigue life almost doubled at a stress amplitude of 180 MPa and increased by a factor of more than 50 at 120 MPa. DryLP was found to be more effective for improving the fatigue performance of laser-welded aluminum specimens with welding defects at lower stress amplitudes, as stress concentration at the defects did not significantly influence the fatigue performance.

scholarly journals High energy femtosecond laser peening of 2024 aluminum alloy

Procedia CIRP ◽  
2018 ◽  
Vol 74 ◽  
pp. 357-361 ◽  
Author(s):  
Shuting Lei ◽  
Guang Yang ◽  
Xinya Wang ◽  
Shouyuan Chen ◽  
Amy Prieb ◽  
...  
Keyword(s):  
Aluminum Alloy ◽  
Femtosecond Laser ◽  
High Energy ◽  
Laser Peening ◽  
2024 Aluminum Alloy

Double-pulse femtosecond laser peening of aluminum alloy AA5038: Effect of inter-pulse delay on transient optical plume emission and final surface micro-hardness

2016 ◽  
Vol 109 (21) ◽  
pp. 211902 ◽  
Author(s):  
E. I. Ageev ◽  
V. Yu. Bychenkov ◽  
A. A. Ionin ◽  
S. I. Kudryashov ◽  
A. A. Petrov ◽  
...  
Keyword(s):  
Aluminum Alloy ◽  
Femtosecond Laser ◽  
Double Pulse ◽  
Laser Peening ◽  
Micro Hardness ◽  
Pulse Delay ◽  
Final Surface ◽  
Plume Emission

Effect of Temperature on Surface Mechanical Property of 2024 Aluminum Alloy Treated by Laser Peening

2016 ◽  
Vol 43 (10) ◽  
pp. 1002003
Author(s):  
孟宪凯 Meng Xiankai ◽  
周建忠 Zhou Jianzhong ◽  
苏纯 Su Chun ◽  
黄舒 Huang Shu ◽  
盛杰 Sheng Jie ◽  
...  
Keyword(s):  
Mechanical Property ◽  
Aluminum Alloy ◽  
Effect Of Temperature ◽  
Laser Peening ◽  
2024 Aluminum Alloy

Microstructure Examination of Electromagnetic Casting 2024 Aluminum Alloy Ingots

2007 ◽  
Vol 44 (6) ◽  
pp. 290-298 ◽  
Author(s):  
Aleksandra Pataric ◽  
Zvonko Gulisija ◽  
Srdjan Markovic
Keyword(s):  
Aluminum Alloy ◽  
2024 Aluminum Alloy ◽  
Electromagnetic Casting ◽  
Microstructure Examination

scholarly journals Effect of nanostructure on phase transformations during heat treatment of 2024 aluminum alloy

2021 ◽  
Author(s):  
K. B. Demétrio ◽  
A.P. G. Nogueira ◽  
C. Menapace ◽  
T. Bendo ◽  
A. Molinari
Keyword(s):  
Heat Treatment ◽  
Aluminum Alloy ◽  
Phase Transformations ◽  
2024 Aluminum Alloy
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