Crystallographic texture and microstructure of pulsed diode laser-deposited Waspaloy
Source abstract
Abstract
The role of both laser pulse length and duty cycle in controlling the grain size and crystallographic texture of diode laser-deposited Waspaloy powder is investigated. Thin-walled test structures of Waspaloy have been produced using a range of pulse parameters and analyzed by means of scanning electron microscopy and electron backscatter diffraction. Results have been correlated with a simple analytical model of the effect of the laser pulse on the substrate temperature and melt-pool geometry in order to help explain the trends observed. Findings show that pulse parameters have a marked effect on the resulting grain morphology and crystallographic orientation. Modelling has indicated that this arises because the microstructure is highly dependent on the melt-pool geometry, particularly the inclination angle of the melt-pool boundary. © 2008 Acta Materialia Inc.
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Research context
OpenAlex topics: Additive Manufacturing Materials and Processes · High Entropy Alloys Studies · Laser-induced spectroscopy and plasma
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References (29)
Show source-provided references
1. Rangaswamy · Mater Sci Eng A · 2005 · 339 · 7210.1016/j.msea.2005.02.019 ↗
2. Lewis · Mater Design · 2000 · 21 · 41710.1016/S0261-3069(99)00078-3 ↗
3. Zhang · Opt Laser Technol · 2007 · 39 · 54910.1016/j.optlastec.2005.10.009 ↗
4. Gaumann · Mater Sci Eng A · 1999 · 271 · 23210.1016/S0921-5093(99)00202-6 ↗
5. Pinkerton · J Laser Appl · 2006 · 18 · 21610.2351/1.2227018 ↗
6. Han · J Laser Appl · 2005 · 17 · 8910.2351/1.1848523 ↗
7. Blackwell · J Mater Process Tech · 2005 · 170 · 24010.1016/j.jmatprotec.2005.05.005 ↗
8. Reed · 2006
9. Bain · 1988
10. Lasers in materials processing and manufacturing II10.1117/12.571089 ↗
11. Kobryn · Scripta Mater · 2000 · 43 · 29910.1016/S1359-6462(00)00408-5 ↗
12. Choi · Int J Mach Tools Manu · 2005 · 45 · 59710.1016/j.ijmachtools.2004.08.014 ↗
13. Wu · Mater Design · 2004 · 25 · 13710.1016/j.matdes.2003.09.009 ↗
14. Pinkerton · Int J Mach Tools Manu · 2004 · 44 · 57310.1016/j.ijmachtools.2004.01.001 ↗
15. Pinkerton · Appl Surf Sci · 2005 · 247 · 26810.1016/j.apsusc.2005.01.083 ↗
16. Pinkerton · Appl Surf Sci · 2003 · 208 · 41110.1016/S0169-4332(02)01422-8 ↗
17. Hofmeister WH, MacCallum DO, Knorovsky DA. In: Proceedings of 9th international conference on computer technology in welding; 1999. p. 187.
18. Pinkerton · Proc Int Mech Eng B · 2004 · 218 · 36310.1243/095440504323055498 ↗
19. Peyre · J Phys D · 2008 · 41 · 110.1088/0022-3727/41/2/025403 ↗
20. Modelling the effects of laser beam geometry on laser surface heating of metallic materials
21. Preicleous KA, Baily C. Study of Marangoni phenomena in laser melted pools. In: Conference on modelling of casting, welding and advanced solidification processes. London; 1995. p. 91.
22. Fisher · Acta Metall · 1980 · 28 · 77710.1016/0001-6160(80)90155-8 ↗
23. Gaumann · Acta Mater · 2001 · 49 · 105110.1016/S1359-6454(00)00367-0 ↗
24. Liu · Acta Mater · 2004 · 52 · 4833
25. http://www.hkltechnology.com.
26. Moat R, Karadge M, Pinkerton AJ, Deschamps A, Bley F, Li L, et al. Intragranular precipitation variations in laser deposited Waspaloy due to compositional inhomogeneities. In: Proceedings of TMS annual meeting, Orlando, FL; 2006.
27. Pattle · Q J Mech Appl Math · 1959 · 12 · 40710.1093/qjmam/12.4.407 ↗
28. Carlaw · 1959
29. Analysis of enhanced thermal conductivity approach for predicting melt pool geometry and temperature distribution for laser melting processes10.1007/978-1-84628-988-0_33 ↗