Surface quality evaluation of cold plasma and NMQL multi-field coupling eco-friendly micro-milling 7075-T6 aluminum alloy

doi:10.1007/s40436-024-00530-z

Abstract

Abstract: Micromilling has been extensively employed in different fields such as aerospace, energy, automobiles, and healthcare because of its efficiency, flexibility, and versatility in materials and structures. Recently, nanofluid minimum quantity lubrication (NMQL) has been proposed as a green and economical cooling and lubrication method to assist the micromilling process; however, its effect is limited because high-speed rotating tools disturb the surrounding air and impede the entrance of the nanofluid. Cold plasma can effectively enhance the wettability of lubricating droplets on the workpiece surface and promote the plastic fracture of materials. Therefore, the multifield coupling of cold plasma and NMQL may provide new insights to overcome this bottleneck. In this study, experiments on cold plasma + NMQL multifield coupling-assisted micromilling of a 7075-T6 aluminum alloy were conducted to analyze the three-dimensional (3D) surface roughness (S_a), surface micromorphology, burrs of the workpiece, and milling force at different micromilling depths. The results indicated that, under cold plasma + NMQL, the workpiece surface micromorphology was smooth with fewer burrs. In comparison with dry, N₂, cold plasma, and NMQL, the S_a values at different cutting depths (5, 10, 15, 20 and 30 μm) were relatively smaller under cold plasma + NMQL with 0.035, 0.036, 0.041, 0.043 and 0.046 μm, which were respectively reduced by 38.9%, 45.7%, 45.9%, 47% and 48.9% when compared to the dry. The effect of cold plasma + NMQL multifield coupling-assisted micromilling on enhancing the workpiece surface quality was analyzed using mechanical analysis of tensile experiments, surface wettability, and X-ray photoelectron spectroscopy (XPS).

The full text can be downloaded at https://link.springer.com/article/10.1007/s40436-024-00530-z

Key words: Micro-milling, Nanofluid minimum quantity lubrication (NMQL), Cold plasma, Environmentally friendly, Three-dimensional (3D) surface roughness

Zhen-Jing Duan, Shuai-Shuai Wang, Shu-Yan Shi, Ji-Yu Liu, Yu-Heng Li, Zi-Heng Wang, Chang-He Li, Yu-Yang Zhou, Jin-Long Song, Xin Liu. Surface quality evaluation of cold plasma and NMQL multi-field coupling eco-friendly micro-milling 7075-T6 aluminum alloy[J]. Advances in Manufacturing, 2025, 13(1): 69-87.

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References

[1] O’Toole L, Fang FZ (2023) Optimal tool design in micro-milling of difficult-to-machine materials. Adv Manuf 11(2):222-247
[2] Chen N, Li HN, Wu JM et al (2021) Advances in micro milling: from tool fabrication to process outcomes. Int J Mach Tool Manu 160:103670. https://doi.org/10.1016/j.ijmachtools.2020.103670
[3] Ahmed F, Ahmad F, Kumaran ST et al (2023) Development of cryogenic assisted machining strategy to reduce the burr formation during micro-milling of ductile material. J Manuf Process 85:43-51
[4] Jia ZY, Lu XH, Gu H et al (2021) Deflection prediction of micro-milling Inconel 718 thin-walled parts. J Mater Process Tech 291:11700. https://doi.org/10.1016/j.jmatprotec.2020.117003
[5] Zhao GL, Zhao B, Ding WF et al (2024) Nontraditional energy-assisted mechanical machining of difficult-to-cut materials and components in aerospace community: a comparative analysis. Int J Extrem Manuf 6(2):022007. https://doi.org/10.1088/2631-7990/ad16d6
[6] Gong P, Zhang Y, Wang C et al (2024) Residual stress generation in grinding: mechanism and modeling. J Mater Process Tech 324:118262. https://doi.org/10.1016/j.jmatprotec.2023.118262
[7] Yu WW, Chen J, Ming WW et al (2022) Feasibility of supercritical CO-based minimum quantity lubrication to improve the surface integrity of 50% Sip/Al composites. J Manuf Process 73:364-374
[8] Saha S, Deb S, Bandyopadhyay PP (2020) An analytical approach to assess the variation of lubricant supply to the cutting tool during MQL assisted high speed micromilling. J Mater Process Tech 285:116783. https://doi.org/10.1016/j.jmatprotec.2020.116783
[9] Cai CY, An QL, Ming WW et al (2022) Microstructure- and cooling/lubrication environment-dependent machining responses in side milling of direct metal laser-sintered and rolled Ti6Al4V alloys. J Mater Process Tech 300:117418. https://doi.org/10.1016/j.jmatprotec.2021.117418
[10] Liu MZ, Li CH, Zhang YB et al (2021) Cryogenic minimum quantity lubrication machining: from mechanism to application. Front Mech Eng-Prc 16(4):649-697
[11] Khanna N, Airao J, Kshitij G et al (2023) Sustainability analysis of new hybrid cooling/lubrication strategies during machining Ti6Al4V and Inconel 718 alloys. Sustain Mater Technol 36:e00606. https://doi.org/10.1016/j.susmat.2023.e00606
[12] Das CR, Ghosh A (2023) Performance of carbide end mills coated with new generation nano-composite TiAlSiN in machining of austenitic stainless steel under near-dry (MQL) and flood cooling conditions. J Manuf Process 104:418-442
[13] Liu M, Li C, Yang M et al (2023) Mechanism and enhanced grindability of cryogenic air combined with biolubricant grinding titanium alloy. Tribol Int 187:108704. https://doi.org/10.1016/j.triboint.2023.108704
[14] Qu SS, Yao P, Gong YD et al (2022) Environmentally friendly grinding of C/SiCs using carbon nanofluid minimum quantity lubrication technology. J Clean Prod 366:132898. https://doi.org/10.1016/j.jclepro.2022.132898
[15] Sen B, Mia M, Krolczyk GM et al (2021) Eco-friendly cutting fluids in minimum quantity lubrication assisted machining: a review on the perception of sustainable manufacturing. Int J Pr Eng Man-Gt 8(1):249-280
[16] Rajaguru J, Arunachalam N (2020) A comprehensive investigation on the effect of flood and MQL coolant on the machinability and stress corrosion cracking of super duplex stainless steel. J Mater Process Technol 276:116417. https://doi.org/10.1016/j.jmatprotec.2019.116417
[17] Cai LE, Feng YX, Liang SY (2022) Analytical modeling of residual stress in end-milling with minimum quantity lubrication. Mech Ind 23:7. https://doi.org/10.1051/meca/2022005
[18] Cui X, Li CH, Ding WF et al (2022) Minimum quantity lubrication machining of aeronautical materials using carbon group nanolubricant: From mechanisms to application. Chin J Aeronaut 35(11):85-112
[19] Chu A, Li C, Zhou Z et al (2023) Nanofluids minimal quantity lubrication machining: from mechanisms to application. Lubricants 11(10):422. https://doi.org/10.3390/lubricants11100422
[20] Cui X, Li C, Yang M et al (2023) Enhanced grindability and mechanism in the magnetic traction nanolubricant grinding of Ti-6Al-4V. Tribol Int 186:108603. https://doi.org/10.1016/j.triboint.2023.108603
[21] Çamli KY, Demirsöz R, Boy M et al (2022) Performance of MQL and nano-MQL lubrication in machining ER7 steel for train wheel applications. Lubricants 10(4):48. https://doi.org/10.3390/lubricants10040048
[22] Songmei Y, Xuebo H, Guangyuan Z et al (2017) A novel approach of applying copper nanoparticles in minimum quantity lubrication for milling of Ti-6Al-4V. Adv Prod Eng Manag 12(2):139-150
[23] Zhang YB, Li HN, Li CH et al (2023) Nano-enhanced biolubricant in sustainable manufacturing: from processability to mechanisms. Friction 10(6):803-841
[24] Yang M, Kong M, Li C et al (2023) Temperature field model in surface grinding: a comparative assessment. Int J Extrem Manuf 5(4):042011. https://doi.org/10.1088/2631-7990/acf4d4
[25] Dambatta YS, Sayuti M, Sarhan AAD et al (2019) Tribological performance of SiO-based nanofluids in minimum quantity lubrication grinding of SiN ceramic. J Manuf Process 41:135-147
[26] Duan Z, Wang S, Wang Z et al (2024) Tool wear mechanisms in cold plasma and nano-lubricant multi-energy field coupled micro-milling of Al-Li alloy. Tribol Int 192:109337. https://doi.org/10.1016/j.triboint.2024.109337
[27] Nam J, Lee SW (2018) Machinability of titanium alloy (Ti-6Al-4V) in environmentally-friendly micro-drilling process with nanofluid minimum quantity lubrication using nanodiamond particles. Int J Pr Eng Man-Gt 5(1):29-35
[28] Sirin S, Sarikaya M, Yildirim CV et al (2021) Machinability performance of nickel alloy X-750 with SiAlON ceramic cutting tool under dry, MQL and hBN mixed nanofluid-MQL. Tribol Int 153:106673. https://doi.org/10.1016/j.triboint.2020.106673
[29] Abbas AT, Anwar S, Abdelnasser E et al (2021) Effect of different cooling strategies on surface quality and power consumption in finishing end milling of stainless steel 316. Materials 14(4):903. https://doi.org/10.3390/ma14040903
[30] Roushan A, Rao US, Patra K et al (2022) Performance evaluation of tool coatings and nanofluid MQL on the micro-machinability of Ti-6Al-4V. J Manuf Process 73:595-610
[31] Makhesana MA, Patel KM, Krolczyk GM et al (2023) Influence of MoS2 and graphite-reinforced nanofluid-MQL on surface roughness, tool wear, cutting temperature and microhardness in machining of Inconel 625. CIRP J Manuf Sci Technol 41:225-238
[32] Deng H, Yamamura K (2013) Atomic-scale flattening mechanism of 4H-SiC (0001) in plasma assisted polishing. CIRP Ann-Manuf Technol 62(1):575-578
[33] Prysiazhnyi V, Slavicek P, Cernak M (2014) Aging of plasma-activated copper and gold surfaces and its hydrophilic recovery after water immersion. Thin Solid Films 550:373-380
[34] Katahira K, Ohmori H, Takesue S et al (2015) Effect of atmospheric-pressure plasma jet on polycrystalline diamond micro-milling of silicon carbide. CIRP Ann-Manuf Technol 64(1):129-132
[35] Bastawros AF, Chandra A, Poosarla PA (2015) Atmospheric pressure plasma enabled polishing of single crystal sapphire. CIRP Ann-Manuf Technol 64(1):515-518
[36] Yamamura K, Emori K, Sun R et al (2018) Damage-free highly efficient polishing of single-crystal diamond wafer by plasma-assisted polishing. CIRP Ann-Manuf Technol 67(1):353-356
[37] Sun RY, Yang X, Arima K et al (2020) High-quality plasma-assisted polishing of aluminum nitride ceramic. CIRP Ann-Manuf Technol 69(1):301-304
[38] Hu YZ, Meng JB, Luan XS et al (2021) Micromilling of Ti6Al4V alloy assisted by plasma electrolytic oxidation. J Micromech Microeng 31(1):015004. https://doi.org/10.1088/1361-6439/abc9f6
[39] Cao Y, Ding WF, Zhao BA et al (2022) Effect of intermittent cutting behavior on the ultrasonic vibration-assisted grinding performance of Inconel 718 nickel-based superalloy. Precis Eng 78:248-260
[40] Gupta MK, Song QH, Liu ZQ et al (2021) Experimental characterisation of the performance of hybrid cryo-lubrication assisted turning of Ti-6Al-4V alloy. Tribol Int 153:106582. https://doi.org/10.1016/j.triboint.2020.106582
[41] Xu W, Li C, Cui X et al (2023) Atomization mechanism and machinability evaluation with electrically charged nanolubricant grinding of GH4169. J Manuf Process 106:480-493
[42] Duan ZJ, Yin QG, Li CH et al (2020) Milling force and surface morphology of 45 steel under different Al₂O₃ nanofluid concentrations. Int J Adv Manuf Tech 107(3/4):1277-1296
[43] Gao T, Li CH, Zhang YB et al (2019) Dispersing mechanism and tribological performance of vegetable oil-based CNT nanofluids with different surfactants. Tribol Int 131:51-63
[44] Liu X, Wang BQ, Li YH et al (2023) Improving machinability of single-crystal silicon by cold plasma jet. J Manuf Process 99:581-591
[45] Liu JY, Song JL, Chen Y et al (2021) Atmospheric pressure cold plasma jet-assisted micro-milling TC4 titanium alloy. Int J Adv Manuf Tech 112(7/8):2201-2209
[46] Sousa VFC, Silva FJG, Alexandre R et al (2023) Experimental study on the wear evolution of different PVD coated tools under milling operations of LDX2101 duplex stainless steel. Adv Manuf 11(1):158-179
[47] Xu Q, Xiao S, Wang YQ et al (2024) Wear-induced variation of surface roughness in grinding 2.5D Cf/SiC composites. Int J Mech Sci 264:108811. https://doi.org/10.1016/j.ijmecsci.2023.108811
[48] Xu Q, Xiao S, Gao H et al (2022) The propagation of fibre-matrix interface debonding during CFRP edge milling process with the multi-teeth tool: a model analysis. Compos Part A Appl S 160:107050. https://doi.org/10.1016/j.compositesa.2022.107050
[49] Qu SS, Yao P, Gong YD et al (2022) Modelling and grinding characteristics of unidirectional C-SiCs. Ceram Int 48(6):8314-8324
[50] Jamil M, Zhao W, He N et al (2021) Sustainable milling of Ti-6Al-4V: a trade-off between energy efficiency, carbon emissions and machining characteristics under MQL and cryogenic environment. J Clean Prod 281:125374. https://doi.org/10.1016/j.jclepro.2020.125374
[51] Yuan H, Li YL, Liu YY et al (2023) Improving the forming performance of incrementally formed sheet parts with customized heat treatment strategies. Adv Manuf 11(2):264-279
[52] Roushan A, Rao US, Sahoo P et al (2023) Wear behavior of AlTiN coated WC tools in micromilling of Ti6Al4V alloy using vegetable oil-based nanofluids. Tribol Int 188:108825. https://doi.org/10.1016/j.triboint.2023.108825
[53] Niu ZC, Cheng K (2020) Improved dynamic cutting force modelling in micro milling of metal matrix composites Part I: theoretical model and simulations. P I Mech Eng C-J Mec 234(9):1733-1745
[54] Niu ZC, Cheng K (2020) Improved dynamic cutting force modelling in micro milling of metal matrix composites Part II: experimental validation and prediction. P I Mech Eng C-J Mec 234(8):1500-1515
[55] Yin QA, Liu ZQ, Wang B (2023) Prediction of temperature field in machined workpiece surface during the cutting of Inconel 718 coated with surface-active media. Adv Manuf 11(3):378-389
[56] Gajrani KK, Suvin PS, Kailas SV et al (2019) Thermal, rheological, wettability and hard machining performance of MoS₂ and CaF₂ based minimum quantity hybrid nano-green cutting fluids. J Mater Process Tech 266:125-139
[57] Jiao D, Zheng SH, Wang YZ et al (2011) The tribology properties of alumina/silica composite nanoparticles as lubricant additives. Appl Surf Sci 257(13):5720-5725
[58] Mao C, Tang XJ, Zou HF et al (2012) Investigation of grinding characteristic using nanofluid minimum quantity lubrication. Int J Precis Eng Man 13(10):1745-1752
[59] Haq MA, Hussain S, Ali MA et al (2021) Evaluating the effects of nano-fluids based MQL milling of IN718 associated to sustainable productions. J Clean Prod 310:127463. https://doi.org/10.1016/j.jclepro.2021.127463
[60] Zhang GQ, Chen H, Xiao GC et al (2022) Effect of SiC nanofluid minimum quantity lubrication on the performance of the ceramic tool in cutting hardened steel. J Manuf Process 84:539-554
[61] Rahman SS, Ashraf MZI, Amin AKMN et al (2019) Tuning nanofluids for improved lubrication performance in turning biomedical grade titanium alloy. J Clean Prod 206:180-196
[62] Sarikaya M, Sirin S, Yildirim CV et al (2021) Performance evaluation of whisker-reinforced ceramic tools under nano-sized solid lubricants assisted MQL turning of Co-based Haynes 25 superalloy. Ceram Int 47(11):15542-15560