Abstract
A comparative study on conventional drilling and helical milling has been reported under the context of aircraft alloy hole making. The impacts of these two different machining processes on the microstructures and the fatigue performance of different aircraft alloys have been elaborated. Results show that both alloys undergo more severe surface/subsurface plastic deformation under conventional drilling comparing to helical milling process. Helical milling leads to a longer coupon fatigue life compared to conventional drilling for both alloys. The fatigue life of Al 2024-T3 is significantly longer than that of Ti-6Al-4V under all machining conditions. The use of coolant generally produces less damaged surface and leads to enhanced fatigue performance of the machined alloys. In addition, the machined surface roughness has been studied to further elaborate the effects of different machining processes.
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References
Riley A, Aardema, B, Vosbury P, Eiff MA, Frautschy HG, Serkenburg R, Shaffer D, Wild T, Michmerhuizen T (2008) Aviation maintenance technician handbook. Department of Transportation: Federal Aviation Administration. Newcastle, Wash
Zhang S, Zhao D (2012) Aerospace materials handbook. CRC Press
Iyer R, Koshy P, Ng E (2007) Helical milling: an enabling technology for hard machining precision holes in AISI D2 tool steel. Int J Mach Tools Manuf 47(2):205–210
Gu W, Xu H, Liu J, Yue Z (2009) Effect of drilling process on fatigue life of open holes. Tsinghua Sci & Tech 14(S2):54–57
Liu J, Xu HL, Zhai HB, Yue ZF (2010) Effect of detail design on fatigue performance of fastener hole. Mater Des 31(2):976–980
Zhang PF, Churi NJ, Pei ZJ, Treadwell C (2008) Mechanical drilling processes for titanium alloys: a literature review. Mach Sci Technol 12(4):417–444
Latger F, Harris T, Björklund S (2002) Drilling cost model. SAE Technical Paper 2002–01-632
Qin XD, Sun XT, Wang Q, Chen SM, Li H (2012) Comparative study on helical milling and drilling of Ti-6Al-4 V. Key Eng Mat 499:200–204
Sasahara H, Kawasaki M, Tsutsumi M (2008) Helical feed milling with MQL for boring of aluminum alloy. J Adv Mech Des Syst & Manuf 2(6):1030–1040
ISO 286–2:2010. Geometrical product specifications (GPS)—ISO code system for tolerances on linear sizes—part 2: tables of standard tolerance classes and limit deviations for holes and shafts
Li H, He G, Qin X, Wang G, Lu C, Gui L (2014) Tool wear and hole quality investigation in dry helical milling of Ti-6Al-4V alloy. Int J Adv Manuf Technol 71(5):1511–1523
Olvera D, De Lacalle LNL, Urbikain G, Lamikiz A, Rodal P, Zamakona IH (2012) Hole making using ball helical milling on titanium alloys. Mach Sci Technol 16(2):173–188
Sun J, Guo YB (2009) A comprehensive experimental study on surface integrity by end milling Ti-6Al-4V. J Mater Process Technol 209(8):4036–4042
Che-Haron CH, Jawaid A (2005) The effect of machining on surface integrity of titanium alloy Ti-6% Al-4% V. J Mater Process Technol 166(2):188–192
Che-Haron CH (2001) Tool life and surface integrity in turning titanium alloy. J Mater Process Technol 118(1–3):231–237
Dornfeld DA, Kim JS, Dechow H, Hewson J, Chen LJ (1999) Drilling burr formation in titanium alloy, Ti-6Al-4V. CIRP Annals – Manuf Tech 48(1):73–76
Ji CH, Li YH, Qin XD, Zhao Q, Sun D, Jin Y (2015) 3D FEM simulation of helical milling hole process for titanium alloy Ti-6Al-4V. Int J Adv Manuf Technol 81(9):1733–1742
Oliver WC, Pharr GM (1992) An improved technique for determining hardness and elastic modulus using load and displacement sensing indentation experiments. J Mat Res 7(6):1564–1583
Leyens C, Peters M (2003) Titanium and titanium alloys: fundamentals and applications. Wiley-VCH, Weinheim
Hughes JI, Sharman ARC, Ridgway K (2004) The effect of tool edge preparation on tool life and workpiece surface integrity. Proc Inst Mech Eng Pt B: J Eng Manuf 218(9):1113–1123
Reissig L, Völkl R, Mills MJ, Glatzel U (2004) Investigation of near surface structure in order to determine process-temperatures during different machining processes of Ti6Al4V. Scr Mater 50(1):121–126
Pei X, Chen W, Ren B, Han Y (2002) Effect of drilling processes on surface integrity of 7075-aluminum alloy holes. J Beijing University of Aeronautics and Astronautics 28(3):319–322
Rey PA, LeDref J, Senatore J, Landon Y (2016) Modelling of cutting forces in orbital drilling of titanium alloy Ti–6Al–4V. Int J Machine Tools & Manufacture 106:75–88
M'Saoubi R, Axinte D, Soo SL, Nobel C, Attia H, Kappmeyer G, Engin S, Sim WM (2015) High performance cutting of advanced aerospace alloys and composite materials. CIRP Annals-Manuf Tech 64(2):557–580
Xu JK, Xia K, Xu Z, Zhang LS, Yu ZJ, Yu HD (2015) Study on hardness and tribological properties of highspeed wire electrical discharge machining surface. International Conference on Mechatronics and Automation, Beijing
Arooj S, Shah M, Sadiq S, Jaffery SHI, Khushnood S (2014) Effect of current in the EDM machining of aluminum 6061 T6 and its effect on the surface morphology. Arab J Sci & Eng 39(5):4187–4199
Songmene V, Khettabi R, Zaghbani I, Kouam J, Djebara A (2011) Machining and machinability of aluminum alloys. In: Kvackaj T (ed) aluminium alloys, theory and applications. InTech. DOI: 10.5772/14888
Zhao Q, Qin X, Ji C, Li Y, Sun D, Jin Y (2015) Tool life and hole surface integrity studies for hole-making of Ti6Al4V alloy. Intl J Adv Manuf Tech 79(5):1017–1026
Nouari M, Makich H (2014) On the physics of machining titanium alloys: interactions between cutting parameters, microstructure and tool wear. Metals 4(3):335–358
Pan Z, Liang SY, Garmestani H, Shih DS (2016) Prediction of machining-induced phase transformation and grain growth of Ti-6Al-4 V alloy. Int J Adv Manuf Technol 87(1):859–866
Yao CF, Tan L, Ren JX, Lin Q, Liang YS (2014) Surface integrity and fatigue behaviour for high-speed milling Ti-10V-2Fe-3Al titanium alloy. J Fail Anal Prev 14(1):102–112
Li Y, Lee CH, Gao J (2015) From computer-aided to intelligent machining: recent advances in computer numerical control machining research. Proc IMechE Part B: J Engineering Manufacture 229(7):1087–1103
Liu C, Li Y, Hao X (2016) An adaptive machining approach based on in-process inspection of interim machining states for large-scaled and thin-walled complex parts. Int J Adv Manuf Technol DOI. doi:10.1007/s00170-016-9647-4
Liu C, Li Y, Shen W (2014) Integrated manufacturing process planning and control based on intelligent agents and multi-dimension features. Int J Adv Manuf Technol 75(9):1457–1471
Liu LY, Zhou X, Shen W (2015) Interim feature-based cutting parameter optimization for aircraft structural parts. Int J Adv Manuf Technol 77(1):663–676
Li Y, Liu X, Gao J, Maropoulos P (2012) A dynamic feature information model for integrated manufacturing planning and optimization. CIRP Annals – Manuf Tech 61(1):167–170
Liu X, Li Y, Gao J (2016) A multi-perspective dynamic feature concept in adaptive NC machining of complex freeform surfaces. Int J Adv Manuf Technol 82(5):1259–1268
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Sun, D., Lemoine, P., Keys, D. et al. Hole-making processes and their impacts on the microstructure and fatigue response of aircraft alloys. Int J Adv Manuf Technol 94, 1719–1726 (2018). https://doi.org/10.1007/s00170-016-9850-3
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DOI: https://doi.org/10.1007/s00170-016-9850-3