The effect of trepanning speed of laser drilled acute angled cooling holes on the high temperature low cycle corrosion fatigue performance of CMSX-4 at 850 °C
Source abstract
Abstract
The effect of laser trepanning speed and, as a result, recast layer thickness on the high temperature corrosion fatigue behaviour of CMSX-4 superalloy acute angled holes was investigated. The experimental test results show that an increasing laser drilling speed caused a reduction in corrosion fatigue life by 35–50% at 850 °C, under low cycle fatigue regime. This reduction was found to correlate directly with the recast layer thickness and surface anomalies within the recast layer produced during the laser drilling process. Corrosion had a smaller effect on the overall life of the laser drilled specimens under the conditions tested. The results presented show that laser trepanning speed is influential in limiting the life performance of laser drilled components in service.
Source: openalex_inverted_index · Quality: baseline
Research context
OpenAlex topics: Laser Material Processing Techniques · Thermography and Photoacoustic Techniques · High-Temperature Coating Behaviors
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (18)
Show source-provided references
1. Laser drilling in gas turbine blades shaping of holes in ceramic and metallic coatings10.1002/latj.201190024 ↗
2. Hot cracking in the HAZ of laser-drilled turbine blades made from René 8010.3139/120.100695 ↗
3. Recast and oxide formation in laser-drilled acute holes in CMSX-4 nickel single-crystal superalloy10.1243/09544054JEM1541 ↗
4. Investigating the recast layer formed during the laser trepan drilling of Inconel 718 using the Taguchi method10.1007/s00170-006-0454-1 ↗
5. Effects of roundness of laser formed film cooling holes on fatigue life of nickel based single crystal10.1179/0960340913Z.0000000003 ↗
6. Degeilh R, Bonnand V, Pacou D. Study and 3D analysis of the drilling process influence on notched single crystal superalloy specimens. In: ICMFF9; 2013.
7. Thermomechanical fatigue crack growth from laser drilled holes in single crystal nickel based superalloy10.1016/j.ijfatigue.2013.06.006 ↗
8. Pan Y, Zimmer R, Bischoff-Beiermann B, Goldschmidt D. Fatigue behaviour of a single crystal nickel superalloy used in heavy-duty gas turbine blade with thin film cooling. ICF10, Honolulu, USA; 2001.
9. The application of fracture mechanics to life prediction of cooling hole configurations in thermal-mechanical fatigue10.1016/0013-7944(77)90049-2 ↗
10. Morar · 2015 · 1
11. Tensile behavior of a new single-crystal nickel-based superalloy (CMSX-4) at room and elevated temperatures10.1007/BF02645265 ↗
12. Stress rupture and fatigue in thin wall single crystal superalloys with cooling holes
13. Effect of skew angle of holes on the tensile behavior of a Ni-base single crystal superalloy10.1016/j.jallcom.2014.12.096 ↗
14. Hot corrosion of metals and alloys10.1007/s11085-011-9254-6 ↗
15. Influence of coatings and hot corrosion on the fatigue behaviour of nickel-based superalloys10.1016/0040-6090(81)90006-7 ↗
16. New Technique to Map Hot Corrosion Damage: CMSX-4 Example10.1007/s11085-015-9590-z ↗
17. Statistical analysis of recast formation in laser drilled acute blind holes in CMSX-4 nickel superalloy10.1007/s00170-008-1789-6 ↗
18. Effect of beam angle on HAZ, recast and oxide layer characteristics in laser drilling of TBC nickel superalloys10.1016/j.ijmachtools.2006.01.010 ↗