Abstract
A finite element model is developed to predict the chip formation and phase transformation in orthogonal machining of hardened AISI 52100 steel (62HRC) using Polycristalline Cubic Boron Nitride (PCBN) tools. The model mainly includes a chip separation criterion based on critical equivalent plastic strain; a Coulomb’s law for the friction at the tool/chip interface; a material constitutive relation of velocity-modified temperature; a thermal analysis incorporating the heat dissipated from inelastic deformation energy and friction; and an annealing effect model, in which the work hardening effect may be lost or re-accumulate depending on material temperature. This fully coupled thermal-mechanical finite element analysis accurately simulates the formation of segmental chips and predicts the phase transformation on the chips, as verified by experiment. It is found that high temperatures around the secondary shear zone causes fast re-austenitization and martensite transformation, while other parts of the chips retain the original tempered martensitic structure.
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References
Liu CR, Mittal S (1995) Single step super-finishing resulting in superior surface integrity. J Manuf Syst14:124–133
Liu CR, Mittal S (1996) Single step super-finish hard machining: feasibility and feasible cutting conditions. Robot Comput Int Manuf Syst 12(1):15–24
Liu CR, Yang X (2001) The scatter of residual stresses due to machining and grinding. J Mach Sci Technol 5(1):1–22
Agha S, Liu CR (2000) Experimental study on the performance of superfinish hard turned surfaces in rolling contact. Wear 244:52–59
Matsumoto Y (1986) Effect of hardness on the surface integrity of AISI 4340 steel. J Eng Ind 108(3):169–175
Konig W. (1993) Turning versus grinding – a comparison of surface integrity aspects and attainable accuracies. Ann CIRP 42(1):39–43
Abrao AM, Aspinwall DK (1996) The surface integrity of turned and ground hardened bearing steel. Wear 196:279–284
Tonshoff HK, Wobker HG, Brandt D (1995) Hard turning – influences on the workpiece properties. Trans NAMRI/SME 23:215–220
Barbacki A, Kawalec M (1997) Structural alterations in the surface layer during hard machining. J Mater Process Technol 64:33–39
Wang JY, Liu CR (1999) The effect of tool flank wear on the heat transfer thermal damage and cutting mechanics in finish hard turning. Ann CIRP 48(1):53–58
Akiyama T (1977) Thermal deformation analysis of cutting tools by the finite element method. Bull Japan Soc Precis Eng 11(3):139–128
Lin ZC, Pan WC (1993) A thermoelastic-plastic large deformation model for orthogonal cutting with tool flank wear-part I: computational procedures. Int J Mech Sci 35(9):829–840
Lin ZC, Pan WC (1993) A thermoelastic-plastic large deformation model for orthogonal cutting with tool flank wear-part II: machining application. Int J Mech Sci 35(9):841–850
Shirakashi T (1994) The analytical prediction of residual stress within machined sublayer and its effect on accuracy. Int J Japan Soc Precis Eng 28(3):200–205
Shih AJ (1995) Finite element simulation of orthogonal metal cutting. J Eng Ind 11: 84–93
Liu CR, Guo YB (2000) FEM analysis of residual stresses on the sequential machined surface. J Mech Sci 42:1069–1089
Shi J, Liu CR (2004) The influence of material models on finite element simulation of machining. J Manuf Sci Eng 126(4):849–857
Dawson PR, Malkin S (1984) Inclined moving heat source model for calculation metal cutting temperatures. J Eng Ind 107:179–186
Maekawa K, Ohhata H (1997) Simulation analysis of three-dimensional continuous chip formation processes (part 3). Int J Japan Soc Precis Eng 31(2):103–108
Komanduri R, Von Turkovich BF (1981) New observations on the mechanism of chip formation when machining titanium alloys. Wear 69(1):179–188
Komanduri R, Schroeder T, Hazra J, Von Turkovich BF, Flom DG (1982) On the catastrophic shear instability in high-speed machining of an AISI 4330 steel. J Eng Ind 104:121–131
Ueda N, Matsuo T (1982) An analysis of saw-toothed chip formation. Ann CIRP 31(1):81–84
Nakayama K, Arai M, Kanda T (1988) Machining characteristics of hard materials. Ann CIRP 37(1):89–92
Marusich DR, Oritz M (1995) Modelling and simulation of high speed machining. Int J Numer Meth Eng 38(21):3675–3694
Sandstrom DR, Hodowany JN (1998) Modeling the physics of metal cutting in high-speed machining. Mach Sci Technol 2(2):343–353
Ng EG, Aspinwall DK, Brazil D, Monaghan J (1999) Modeling of temperature and forces when orthogonally machining hardened steel. Int J Mach Tools Manuf 39:885–903
Ng EG, Aspinwell DK (2000) Hard part machining AISI H13 (∼50HRC) using AMBORITE AMB90: a finite element modeling approach. Ind Diamond Rev 60(587):305–310
Guo YB, Liu CR (2002) 3D FEA modeling of superfinish hard turning. J Manuf Sci Eng 124(2):189–199
Ueda T (1999) Temperature measurement of CBN tool in turning of high hardness steel. Ann CIRP 48(1):63–66
Hibbit, Karlson, and Sorenson, Inc. (2002) ABAQUS/Explicit user’s manual, version 6.2. ABAQUS, Providence
Shi J, Liu CR (2004) Flow stress property of hardened steel under high temperature with tempering effect. Int J Mech Sci 46(6):891–906
Zener C, Hollomon JH (1944) Effect of strain rate on plastic flow of steel. J Appl Phys 14:22–32
MacGregor CW, Fisher JC (1945) Tension tests at constant true strain rates. J Appl Mech 15:217–227
Oxley PLB (1989) Mechanics of machining. Ellis Horwood, New York
Strenkowski JS, Carroll JT (1985) A finite element model of orthogonal metal cutting. J Eng Ind 107:349–354
Villars P, Prince A, Okamoto H (1995) Handbook of ternary alloy phase diagrams. ASM International, Bilthoven
Davies MA, Evans CJ (1996) On chip morphology, tool wear and cutting mechanics in finish hard turning. Ann CIRP 45(1):77–82
Orlich J (1974) The austenitization process during rapid heating and impulse heating of steel. Traitment Therm 90:69–75
Schrader A, Rose A (1966) Structure of steels. Stahleisen, Düsseldorf
Shaw MC (1998) The mechanism of chip formation with hard turning steel. Ann CIRP 47(1):77–82
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Shi, J., Liu, C. On predicting chip morphology and phase transformation in hard machining. Int J Adv Manuf Technol 27, 645–654 (2006). https://doi.org/10.1007/s00170-004-2242-0
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DOI: https://doi.org/10.1007/s00170-004-2242-0