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Study on dynamic chip formation mechanisms of Ti2AlNb intermetallic alloy

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Abstract

Ti2AlNb alloy is a relatively newly developed high-temperature-resistant structural material due to its excellent mechanical properties, which is also regarded as one of the most difficult-to-cut materials. The aim of this study is to characterize the chip formation during the machining of Ti2AlNb intermetallic alloy due to its critical role in studying optimization of machining process variables. A geometry model of chip formation was established to analyze the influence of strain rate hardening effect and thermal softening effect on the flow stress in the shear zone. A series of orthogonal cutting tests and quick-stop cutting tests were conducted with varying cutting speeds and cutting depths to validate the evolutions of flow stress inside the shear band. Results associated with cutting forces, cutting temperature, chip morphology, and microhardness are discussed and compared with those of most commonly used Ti6Al4V alloy. It is shown that the cutting forces and cutting temperature of Ti2AlNb alloy are higher than those of Ti6Al4V alloy by 35.3 and 20%, respectively. The chip morphologies of Ti2AlNb alloy show very different characteristics with different cutting conditions (i.e., some very small sawtooth on the free surface of chips under low cutting speed, then transform into irregular serrated chips with increasing cutting speed, and to serrated chip with adiabatic shear band under high cutting speed), which correlate well with the evolutions of microhardness distribution. The chip morphologies and chip formation characteristics are dependent largely on the dynamic flow stress, which is sensitive to the competition of the thermal softening effect with strain rate hardening effect.

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References

  1. Austin CM (1999) Current status of gamma titanium aluminides for aerospace applications. Curr Opin Solid State Mater Sci 4(3):239–242

    Article  Google Scholar 

  2. Loria EA (2000) Gamma titanium aluminides as a prospective structural materials. Intermetallics 8(9–11):1339–1345

    Article  Google Scholar 

  3. Aspinwall DK, Dewes RC, Mantle AL (2005) The machining of γ-TiAl intermetallic alloys. Ann CIRP 54(1):99–104

    Article  Google Scholar 

  4. Mantle AL, Aspinwall DK (2001) Surface integrity of a high speed milled gamma titanium aluminide. J Mater Process Technol 118(1–3):143–150

    Article  Google Scholar 

  5. Hagiwara M, Emura S, Araoka A, Yang SJ, Nam SW (2004) The effect of lamellar morphology on tensile and high-cycle fatigue behavior of orthorhombic Ti-22Al-27Nb alloy. Metall Mater Trans A 35(7):2161–2170

    Article  Google Scholar 

  6. Muraleedharan K, Nandy TK, Banerjee D, Lele S (1995) Phase stability and ordering behaviour of the O phase in Ti2AlNb alloys. Intermetallics 3(3):187–199

    Article  Google Scholar 

  7. Quast JP, Boehlert CJ (2007) Comparison of the microstructure tensile and creep behavior for Ti-24Al-17Nb-0.66Mo and Ti-24Al-17Nb-2.3Mo alloys. Metall Mater Trans A 38(3):529–536

    Article  Google Scholar 

  8. Sharman ARC, Aspinwall DK, Dewes RC, Bowen P (2001) Workpiece surface integrity considerations when finish turning gamma titanium aluminide. Wear 249(5–6):473–481

    Article  Google Scholar 

  9. Cheng TT, Willis MR, Jones IP (1999) Effects of major alloying additions on the microstructure and mechanical properties of γ-TiAl. Interemtallics 7(1):89–99

    Article  Google Scholar 

  10. Germann L, Banerjee D, Guedou JY, Strudel JL (2005) Effect of composition on the mechanical properties of newly developed Ti2AlNb-based titanium aluminide. Intermetallics 13(9):920–924

    Article  Google Scholar 

  11. Zhang QC, Chen MH, Wang H, Wang N, Ouyang JD (2016) Thermal deformation behavior and mechanism of intermetallic alloy Ti2AlNb. Trans Nonferrous Metals Soc China 26(3):722–728

    Article  Google Scholar 

  12. Wang W. Research on the high temperature constitutive equations of Ti2AlNb based intermetallic compound. Nanjing University of Aeronautics and Astronautics, Nanjing, 2014:30–48. (in Chinese)

  13. Ma XD, Xu JH, Ding WF, Lv DS, FU YC. (2014) Wear behavior of Ti(N,C)-Al2O3 coated cemented carbide tools during milling Ti2AlNb based alloy. Key Eng Mater 589-590:361–365

    Article  Google Scholar 

  14. Aspinwall DK, Mantle AL, Chan WK, Soo SL (2013) Cutting temperatures when ball nose end milling γ-TiAl intermetallic alloys. CIRP Annals-Manuf Technol 62(1):75–78

    Article  Google Scholar 

  15. Jones PE, Eylo D (1999) Effects of conventional machining on high cycle fatigue behavior of the intermetallic alloy Ti-47Al-2Nb-2Cr. Mater Sci Eng A 263(2):296–304

    Article  Google Scholar 

  16. Zedan Y, Samuel FH, Samuel AM, Doty HW (2010) Effects of Fe intermetallics on the machinability of heat-treated Al-(7-11)% Si alloys. J Mater Process Technol 210(2):245–257

    Article  Google Scholar 

  17. Ito S, Yoshikawa T, Miyazawa S, Mori K (1997) Machinability of Ni3Al-based intermetallic compounds. J Mater Process Technol 63(1–3):181–186

    Article  Google Scholar 

  18. Settineri L, Priarone PC, Arft M, Lung D, Stoyanov T (2014) An evaluative approach to correlate machinability, microstructures, and material properties of gamma titanium aluminides. CIRP Annals-Manuf Technol 63(1):57–60

    Article  Google Scholar 

  19. Chern GL (2005) Development of a new and simple quick-stop device for the study on chip formation. Int J Mach Tools Manuf 45(7–8):789–794

    Article  Google Scholar 

  20. Cotterell GBM (2008) Dynamics of chip formation during orthogonal cutting of titanium alloy T-6Al-4V. CIRP Annals-Manuf Technol 57(1):93–96

    Article  Google Scholar 

  21. Komanduri R, Hou ZB (2002) On thermoplastic shear instability in the machining of a titanium alloy. Metall Mater Trans A 33(9):2995–3010

    Article  Google Scholar 

  22. Molinari A, Musquar C, Sutter G (2002) Adiabatic shear banding in high speed machining of Ti-6Al-4V: experiments and modeling. Int J Plast 18(4):443–459

    Article  MATH  Google Scholar 

  23. Barry J, Byrne G, Lennon D (2001) Observations on chip formation and acoustic emission in machining Ti-6Al-4V alloy. Int J Mach Tools Manuf 41(7):1055–1070

    Article  Google Scholar 

  24. Baker M, Rosler J, Siemers C (2002) A finite element model of high speed metal cutting with adiabatic shearing. Comput Struct 80(5–6):495–513

    Article  Google Scholar 

  25. Jiang H, Shivpuri R (2004) Prediction of chip morphology and segmentation during the machining of titanium alloys. J Mater Process Technol 150(1–2):124–133

    Google Scholar 

  26. Cui XB, Zhao B, Jiao F, Zheng JX (2016) Chip formation and its effects on cutting force, tool temperature, tool stress, and cutting edge wear in high- and ultra-high-speed milling. Int J Adv Manuf Technol 83:55–65

    Article  Google Scholar 

  27. Yang QB (2012) Formation mechanism and characterization of serrated chip in high speed machining. Shandong University, Jinan China

    Google Scholar 

  28. Gao D, Hao Z, Han R, Chang Y, Muguthu JN (2011) Study of cutting deformation in machining nickel-based alloy Inconel 718. Int J Mach Tools Manuf 51(6):520–527

    Article  Google Scholar 

  29. Wang C, Xie Y, Zheng L, Qin Z, Tang D, Song YX (2014) Research on the chip formation mechanism during the high-speed milling of hardened steel. Int J Mach Tools Manuf 79(4):31–48

    Article  Google Scholar 

  30. Yang Q, Liu Z, Wang B (2012) Characterization of chip formation during machining 1045 steel. Int J Adv Manuf Technol 63(9):881–886

    Google Scholar 

  31. Bejjani R, Balazinski M, Attia H, Plamondon P, Esperance GL (2016) Chip formation and microstructure evolution in the adiabatic shear band when machining titanium metal matrix composites. Int J Mach Tools Manuf 109:137–146

    Article  Google Scholar 

  32. Tay AO, Stevenson MG, Davis GDV, Oxley PLB (1976) A numerical method for calculating temperature distribution in machining, from force and shear angle measurements. Int J Mach Tools Des Res 16(4):335–349

    Article  Google Scholar 

  33. Lin P, He Z, Yuan S, Shen J (2012) Tensile deformation behavior of Ti-22Al-25Nb alloy at elevated temperatures. Mat Sci Eng A 556(11):617–624

    Article  Google Scholar 

  34. Calamaz M, Coupard D, Girot F (2008) A new material model for 2D numerical simulation of serrated chip formation when machining titanium alloy Ti-6Al4V. Int J Mach Tools Manuf 48(3–4):275–288

    Article  Google Scholar 

  35. Wang W. Research on the high temperature constitutive equations of Ti2AlNb based intermetallic compound, 2014, Nanjing, China (in Chinese)

  36. Sima M, Ozel T (2010) Modified material constitutive models for serrated chip formation simulations and experimental validation in machining of titanium alloy Ti-6Al-4V. Int J Mach Tools Manuf 50(11):943–960

    Article  Google Scholar 

  37. Li PN, Qiu XY, Tang LY (2016) Study on dynamic characteristics of serrated chip formation for orthogonal turning Ti6Al4V. Int J Adv Manuf Technol 86(9):3289–3296

    Article  Google Scholar 

  38. Wang Q, Liu Z, Wang B, Song Q, Wan Y (2016) Evolutions of grain size and micro-hardness during chip formation and machined surface generation for Ti-6Al-4V in high-speed machining. Int J Adv Manuf Technol 82(9):1725–1736

    Article  Google Scholar 

  39. Gheisari H, Karamian E (2015) Survey and study of machinability for titanium alloy Ti-6Al-4V through chip formation in milling process. J Manuf Process:4(2)

  40. Wu H, To S (2015) Serrated chip formation and their adiabatic analysis by using the constitutive model of titanium alloy in high speed cutting. J Alloys Comp 629:368–373

    Article  Google Scholar 

  41. Bian WL. Experimental study on turning of titanium matrix composites [D]. Nanjing University of Aeronautics and Astronautics, Nanjing, 2012:43–47. (In Chinese)

  42. Wan L, Wang D, Gao Y (2016) The investigation of mechanism of serrated chip formation under different cutting speeds. Int J Adv Manuf Technol 82(5):951–959

    Article  Google Scholar 

  43. Ducobu F, Rivière-Lorphèvre E, Filippi E (2014) Numerical contribution to the comprehension of saw-toothed Ti6Al4V chip formation in orthogonal cutting. Int J Mech Sci 81(4):77–87

    Article  Google Scholar 

  44. Sutter G, List G (2013) Very high speed cutting of Ti–6Al–4V titanium alloy—change in morphology and mechanism of chip formation. Int J Mach Tools Manuf 66:37–43

    Article  Google Scholar 

  45. Johansson J, Persson C, Lai H, Colliander MH (2016) Microstructural examination of shear localisation during high strain rate deformation of alloy 718. Mater Sci Eng A 662:363–372

    Article  Google Scholar 

  46. Nomani J, Pramanik A, Hilditch T, Littlefair G (2015) Chip formation mechanism and machinability of wrought duplex stainless steel alloys. Int J Adv Manuf Technol 80(5):1127–1135

    Article  Google Scholar 

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Authors and Affiliations

  1. College of Mechanical and Electrical Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing, 210016, People’s Republic of China

    Linjiang He, Honghua Su, Jiuhua Xu & Liang Zhang

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  1. Linjiang He
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  2. Honghua Su
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  3. Jiuhua Xu
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  4. Liang Zhang
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Correspondence to Honghua Su.

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He, L., Su, H., Xu, J. et al. Study on dynamic chip formation mechanisms of Ti2AlNb intermetallic alloy. Int J Adv Manuf Technol 92, 4415–4428 (2017). https://doi.org/10.1007/s00170-017-0527-3

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  • DOI: https://doi.org/10.1007/s00170-017-0527-3

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