Volume 2, Issue 2, June 2018, Page: 15-20
Effects of Laser Shock Peening on Mechanical Properties and Surface Morphology of AA2024 Alloy
Samuel Adu-Gyamfi, Department of Mechanical Engineering, Sunyani Technical University, Sunyani, Ghana
Philip Agyepong Boateng, Department of Mechanical Engineering, Sunyani Technical University, Sunyani, Ghana
Enoch Asuako Larson, Department of Mechanical Engineering, Tamale Technical University, Tamale, Ghana
Philip Yamba, Department of Mechanical Engineering, Tamale Technical University, Tamale, Ghana
Anthony Akayeti, Department of Mechanical Engineering, Tamale Technical University, Tamale, Ghana
Received: May 29, 2018;       Accepted: Jun. 21, 2018;       Published: Jul. 21, 2018
DOI: 10.11648/j.ajmme.20180202.11      View  2437      Downloads  370
Abstract
This paper presents the after effect of laser shock peening (LSP) on AA2024 alloy specimen irradiated with the L-Spiral scanning pattern at different pulse energies. The surface morphology indicates an increase in surface roughness after LSP. The X-Ray diffraction analysis of the LSP treated specimens were compared with the untreated specimen. The sin2Ψ method of the X-ray diffraction technique indicates an improvement in the magnitude of compressive residual stress distribution after LSP. The hardness profile after LSP also shows substantial increment. The results suggested an improvement in the microstructural structure owing to the ultra-high strain rate deformation and refined grains. The High Score Plus software is used to analyse the crystallite size and microstrain of the alloy treated by different pulse energies.
Keywords
Laser Shock Peening, Residual Stress Distribution, Laser Pulse Energy, Surface Morphology, AA2024 Alloy
To cite this article
Samuel Adu-Gyamfi, Philip Agyepong Boateng, Enoch Asuako Larson, Philip Yamba, Anthony Akayeti, Effects of Laser Shock Peening on Mechanical Properties and Surface Morphology of AA2024 Alloy, American Journal of Mechanical and Materials Engineering. Vol. 2, No. 2, 2018, pp. 15-20. doi: 10.11648/j.ajmme.20180202.11
Copyright
Copyright © 2018 Authors retain the copyright of this article.
This article is an open access article distributed under the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/) which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Reference
[1]
Kattoura, M., et al., Effect of laser shock peening on elevated temperature residual stress, microstructure and fatigue behavior of ATI 718Plus alloy. International Journal of Fatigue, 2017. 104: p. 366-378.
[2]
Zou, S., et al., Surface integrity and fatigue lives of Ti17 compressor blades subjected to laser shock peening with square spots. Surface and Coatings Technology, 2018. 347: p. 398-406.
[3]
Mostafa, A. M., M. F. Hameed, and S. S. Obayya, Effect of laser shock peening on the hardness of AL-7075 alloy. Journal of King Saud University-Science, 2017.
[4]
Correa, C., et al., Effect of advancing direction on fatigue life of 316L stainless steel specimens treated by double-sided laser shock peening. International Journal of Fatigue, 2015. 79: p. 1-9.
[5]
Ren, X., et al., The effects of residual stress on fatigue behavior and crack propagation from laser shock processing-worked hole. Materials & Design, 2013. 44: p. 149-154.
[6]
Granados-Alejo, V., et al., Influence of specimen thickness on the fatigue behavior of notched steel plates subjected to laser shock peening. Optics & Laser Technology, 2017.
[7]
Keller, S., et al., Experimental and numerical investigation of residual stresses in laser shock peened AA2198. Journal of Materials Processing Technology, 2017.
[8]
Sanchez-Santana, U., et al., Wear and friction of 6061-T6 aluminum alloy treated by laser shock processing. Wear, 2006. 260(7-8): p. 847-854.
[9]
Sihai, L., et al., Aluminizing mechanism on a nickel-based alloy with surface nanostructure produced by laser shock peening and its effect on fatigue strength. Surface and Coatings Technology, 2018. 342: p. 29-36.
[10]
Wang, J., et al., Effect of laser shock peening on the high-temperature fatigue performance of 7075 aluminum alloy. Materials Science and Engineering: A, 2017. 704: p. 459-468.
[11]
Correa, C., et al., Influence of pulse sequence and edge material effect on fatigue life of Al2024-T351 specimens treated by laser shock processing. International Journal of Fatigue, 2015. 70: p. 196-204.
[12]
Ganesh, P., et al., Studies on laser peening of spring steel for automotive applications. Optics and Lasers in Engineering, 2012. 50(5): p. 678-686.
[13]
Warren, A., Y. Guo, and S. Chen, Massive parallel laser shock peening: simulation, analysis, and validation. International Journal of Fatigue, 2008. 30(1): p. 188-197.
[14]
Wang, Y., et al., Energy-level effects on the deformation mechanism in microscale laser peen forming. Journal of Manufacturing Processes, 2007. 9(1): p. 1-12.
[15]
Peyre, P., et al., Laser shock processing of aluminium alloys. Application to high cycle fatigue behaviour. Materials Science and Engineering: A, 1996. 210(1-2): p. 102-113.
[16]
Standard Test Method for Vickers Hardness of Metallic Materials ASTM International., 2003.
[17]
YE, H.-q. and X.-m. FAN, Surface nanocrystallization of 7A04 aluminium alloy induced by circulation rolling plastic deformation. Transactions of Nonferrous Metals Society of China, 2006. 16: p. s656-s660.
[18]
Roland, T., et al., Enhanced mechanical behavior of a nanocrystallised stainless steel and its thermal stability. Materials Science and Engineering: A, 2007. 445: p. 281-288.
[19]
Altenberger, I., et al., Cyclic deformation and near surface microstructures of shot peened or deep rolled austenitic stainless steel AISI 304. Materials Science and Engineering: A, 1999. 264(1-2): p. 1-16.
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