Experimental investigation of laser peening on Ti17 titanium alloy for rotor blade applications
Source abstract
Abstract
Laser peening is an innovative surface treatment technique, and can significantly improve the mechanical performance of metallic components. To investigate the fatigue life of Ti17 titanium alloy by laser peening, laser peening experiment was undertaken using Nd:YAG laser system with the pulse-width of 15 ns and max pulse-energy of 7 J. Firstly, the mechanical properties and microstructure with different laser peening parameters were investigated, which were measured and observed by Vickers indenter, X-ray diffraction, scanning electron microscope and transmission electron microscope. Micro-hardness and compressive residual stress distribution was remarkably improved. High-density dislocations and fine-grains were observed in the surface layer. Then, several stress levels were chosen to be applied on the tension and compression fatigue specimens. The fatigue life and fracture mechanism of the specimens without- and with-laser peened were compared, and the strengthening mechanism was indicated by analyzing the effects on the microstructure and residual stress evolution. The results demonstrate that laser peening could effectively improve the fatigue life of Ti17 titanium alloy. (C) 2015 Elsevier B.V. All rights reserved.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Surface Treatment and Residual Stress · High Entropy Alloys Studies · Erosion and Abrasive Machining
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (31)
Show source-provided references
1. Effect study and application to improve high cycle fatigue resistance of TC11 titanium alloy by laser shock peening with multiple impacts10.1016/j.surfcoat.2014.05.015 ↗
2. Studies towards development of laser peening technology for martensitic stainless steel and titanium alloys for steam turbine applications10.1016/j.msea.2013.08.074 ↗
3. On the effect of deep-rolling on the stress-controlled low- and high-cycle fatigue behavior of Ti–6Al–4V at elevated temperatures up to 550̊C10.1016/j.ijfatigue.2012.03.008 ↗
4. Study on microstructure and mechanical behavior of dissimilar Ti17 friction welds10.1016/j.msea.2013.10.005 ↗
5. The deformation instability and stability analysis of Ti17 power compact during thermo-mechanical processing10.1016/j.msea.2012.04.032 ↗
6. Dynamic globularization and restoration mechanism of Ti–5Al–2Sn–2Zr–4Mo–4Cr alloy during isothermal compression10.1016/j.jallcom.2014.10.043 ↗
7. Laser shock peening of Ti17 titanium alloy influence of process parameters10.1016/j.msea.2011.10.104 ↗
8. Study on crack propagation simulation of surface crack in welded joint structure10.1016/j.marstruc.2014.08.001 ↗
9. The physics of fatigue crack initiation10.1016/j.ijfatigue.2012.10.009 ↗
10. A combined DEM–FEM numerical method for shot peening parameter optimisation10.1016/j.advengsoft.2014.09.001 ↗
11. Residual stresses after deep rolling of a torsion bar made from high strength steel10.1016/j.jmatprotec.2014.11.042 ↗
12. An investigation of the mechanics of roller burnishing through finite element simulation and experiments10.1016/j.ijmachtools.2012.09.002 ↗
13. The influence of surface enhancement by low plasticity burnishing on the corrosion fatigue performance of AA7075-T610.1016/j.ijfatigue.2004.01.010 ↗
14. A computational methodology for determining the optimum re-peening schedule to increase the fatigue life of laser peened aircraft components10.1016/j.ijfatigue.2014.07.008 ↗
15. Characterization of surface layer in TC17 alloy treated by air blast shot peening10.1016/j.matdes.2014.09.019 ↗
16. Laser shock peening effect on the dislocation transitions and grain refinement of Al-Mg-Si alloy10.1016/j.matchar.2014.08.020 ↗
17. Laser peening without coating on aluminum alloy Al-6061-T6 using low energy Nd:YAG laser10.1016/j.optlastec.2012.06.019 ↗
18. Effect of laser shock peening on the mechanical properties of a near-α titanium10.1016/j.msea.2014.03.108 ↗
19. Influence of laser peening on microstructure and fatigue lives of Ti–6Al–4V10.1016/S1003-6326(14)63449-X ↗
20. Effects of fatigue and fretting on residual stresses introduced by laser shock peening10.1016/j.msea.2006.07.020 ↗
21. Multiscale dislocation dynamics analyses of laser shock peening in silicon single crystals10.1016/j.ijplas.2006.03.006 ↗
22. Eigenstrain modelling of residual stresses generated by laser shock peening10.1016/j.jmatprotec.2011.01.011 ↗
23. Self-nanocrystallization of Ti–6Al–4V alloy surface induced by laser shock processing10.1016/S1875-5372(14)60100-4 ↗
24. Hot corrosion behavior of TC11 titanium alloy treated by laser shock processing10.1016/j.apsusc.2013.07.017 ↗
25. Numerical simulation and experiments of titanium alloy engine blades based on laser shock processing10.1016/j.ast.2014.10.017 ↗
26. Experiment investigation of laser shock peening on TC6 titanium alloy to improve high cycle fatigue performance10.1016/j.msea.2013.11.073 ↗
27. Effect of strain rate and temperature on strain hardening behavior of a dissimilar joint between Ti–6Al–4V and Ti17 alloys10.1016/j.matdes.2013.11.003 ↗
28. Influence of laser peening on microstructure and fatigue lives of Ti–6Al–4V10.1016/S1003-6326(14)63449-X ↗
29. A new effective method to estimate the effect of laser shock peening10.1016/j.ijimpeng.2010.11.008 ↗
30. Effect of laser shock peening on SCC behavior of alloy 600 in tetrathionate solution10.1016/j.corsci.2014.10.045 ↗
31. An alternative physical explanation of the Hall–Petch relation10.1016/j.actamat.2003.10.002 ↗