Relationship between Stress State and Microstructure of 7B04 Aluminum Alloy Surface Fatigue Properties by Laser Shock Peening Improvement
Source abstract
Abstract
Fatigue performance is always an important factor affecting the application of aluminum alloys. The service life of the 7B04 aluminum alloy tends to reduce under continuous alternating loads. Therefore, a new method is urgently needed to improve fatigue performance. Laser shock peening (LSP) is a widely proposed method to enhance fatigue performance. It is found that LSP can prolong the fatigue life of 7B04 by improving the surface stress state. During the strengthening process, the residual stress is mainly attributed to the change in microstructure, which the statistical results of grain size can reflect. The microhardness of the treated 7B04 is 22.7% higher than that of the untreated sample. In addition, there is a significant residual compressive stress from the specimen surface to its interior of about 1500 µm after the process of laser shock peening. The fatigue life is extended to 93%, and the ultimate fracture changes macroscopically. The fatigue performance of 7B04 is greatly improved by the LSP treatment. The strengthening mechanism of LSP is established to reveal the relationship between microstructure and stress state to improve the fatigue performance of metal parts of any shape.
Source: crossref · Quality: baseline
Research context
OpenAlex topics: Surface Treatment and Residual Stress · Tendon Structure and Treatment · Erosion and Abrasive Machining
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
State-Owned Machinery Factory in Wuhu, Wuhu 241007, China
Science and Technology on Plasma Dynamics Laboratory, Air Force Engineering University, Xi’an 710038, China
Anhui Province Aviation Equipment Testing and Control and Reverse Engineering Laboratory, Wuhu 241007, China
College of Materials Science and Technology, Nanjing University of Aeronautics and Astronautics, Nanjing 211100, China
Funding
Foundation of National Key Laboratory of Science and Technology on Helicopter Transmission
References (34)
Show source-provided references
1. Effect of pulsed laser parameters on deformation inhomogeneity in laser shock incremental forming of pure copper foil10.1016/j.optlastec.2020.106205 ↗
2. Effects of residual stress induced by laser shock peening on mixed-mode crack propagation behavior in 7075-T6 aluminum alloy panel10.1016/j.tafmec.2022.103358 ↗
3. Effect of alloy temper on surface modification of aluminium 2624 by laser shock peening10.1016/j.surfcoat.2018.04.069 ↗
4. Effect of laser shock peening on the high-temperature fatigue performance of 7075 aluminum alloy10.1016/j.msea.2017.08.050 ↗
5. Surface gradient microstructural characteristics and evolution mechanism of 2195 aluminum lithium alloy induced by laser shock peening10.1016/j.optlastec.2018.07.041 ↗
6. Numerical investigation of the effect of laser shock peening parameters on the residual stress and deformation response of 7075 aluminum alloy10.1016/j.ijleo.2021.167446 ↗
7. Effects of laser shock peening on stress corrosion behavior of 7075 aluminum alloy laser welded joints10.1016/j.msea.2015.08.084 ↗
8. Improving creep properties of 7075 aluminum alloy by laser shock peening10.1016/j.surfcoat.2018.06.061 ↗
9. Mechanical properties and microstructural response of 2A14 aluminum alloy subjected to multiple laser shock peening impacts10.1016/j.vacuum.2019.03.058 ↗
10. Improvement of abrasion resistance in artificial seawater and corrosion resistance in NaCl solution of 7075 aluminum alloy processed by laser shock peening10.1016/j.optlaseng.2016.10.016 ↗
11. Experimental and analytical investigation of the effects of laser shock peening processing strategy on fatigue crack growth in thin 2024 aluminium alloy panels10.1016/j.ijfatigue.2020.105969 ↗
12. Evaluation of corrosion resistance of AA6082-T651 aluminium alloy after laser shock peening by means of cyclic polarisation and ElS methods10.1016/j.corsci.2012.03.019 ↗
13. Microstructure, residual stress and tensile properties control of wire-arc additive manufactured 2319 aluminum alloy with laser shock peening10.1016/j.jallcom.2018.02.353 ↗
14. Effects of square spot size and beam quality on residual stress of 7050 aluminum alloy by laser shock peening10.1016/j.matchemphys.2022.126023 ↗
15. Effects and optimization of biomimetic laser shock peening on residual fatigue life improvement of aluminum alloy used in aircraft skin10.1016/j.tafmec.2021.103155 ↗
16. Characterization at a local scale of a laser-shock peened aluminum alloy surface10.1016/j.apsusc.2011.03.090 ↗
17. The effect of laser shock peening on surface integrity and high and very high cycle fatigue properties of 2024-T351 aluminum alloy10.1016/j.optlastec.2022.107897 ↗
18. Improvement of friction characteristics of cast aluminum-silicon alloy by laser shock peening10.1016/j.jmatprotec.2018.11.007 ↗
19. Gradient microstructure and vibration fatigue properties of 2024-T351 aluminium alloy treated by laser shock peening10.1016/j.surfcoat.2020.125698 ↗
20. Effect of Low energy laser shock peening on plastic deformation, wettability and corrosion resistance of aluminum alloy 7075 T65110.1016/j.ijleo.2020.165045 ↗
21. Effects of residual stress and surface roughness on the fatigue life of nickel aluminium bronze alloy under laser shock peening10.1016/j.engfracmech.2021.107524 ↗
22. Mechanical properties and deformation dependent microstructural aspects of laser shock peened 7075-T6 aluminum alloy without coating10.1016/j.matchar.2021.111620 ↗
23. WC nano-particle surface injection via laser shock peening onto 5A06 aluminum alloy, Surf10.1016/j.surfcoat.2012.03.004 ↗
24. Microstructure and properties in the weld surface of friction stir welded 7050-T7451 aluminium alloys by laser shock peening10.1016/j.vacuum.2018.03.002 ↗
25. Effect of Laser Shock Peening on Fatigue Life of 2524 Aluminum Alloy
26. The effects of laser shock peening scanning patterns on residual stress distribution and fatigue life of AA2024 aluminium alloy10.1016/j.optlastec.2018.06.036 ↗
27. Effects of Laser Shock Processing on Fatigue Life of 304 Stainless Steel
28. Laser shock peening regulating aluminum alloy surface residual stresses for enhancing the mechanical properties: Roles of shock number and energy10.1016/j.surfcoat.2021.127481 ↗
29. Comparison of mechanical and corrosion properties of 7050 aluminum alloy after different laser shock peening10.1016/j.optlastec.2022.108061 ↗
30. Effect of multiple laser shock peening on microstructure, crystallographic texture and pitting corrosion of Aluminum-Lithium alloy 2060-T810.1016/j.surfcoat.2021.127354 ↗
31. Investigation of microstructure and mechanical properties evolution in 7050 aluminum alloy and 316L stainless steel treated by laser shock peening10.1016/j.matchar.2021.111571 ↗
32. Effect of laser shock peening on mechanical and microstructural aspects of 6061-T6 aluminum alloy10.1016/j.jmatprotec.2020.116640 ↗
33. Finite element analysis of laser shock peening of 2050-T8 aluminum alloy10.1016/j.ijfatigue.2014.05.015 ↗
34. Study on the effect of multiple laser shock peening on residual stress and microstructural changes in modified 9Cr-1Mo (P91) steel10.1016/j.surfcoat.2018.11.027 ↗