Abstract
Exploration of microstructure evolution is of significance for manufacturing the large ring with high performance and high reliability in hot ring rolling. In the study, the microstructure evolution model and the rate-/temperature-/microstructure-dependent constitutive model of titanium alloy are implemented in ABAQUS/Explicit through the user material subroutine VUMAT. The developed subroutine is validated by single-element models and isothermal upsetting experiments of Ti–6Al–4V cylinder. The subroutine is imbedded into a coupled thermomechanical three-dimensional finite element (3D-FE) model for hot rolling of Ti–6Al–4V large ring. The evolution characteristics of β phase volume fraction and grain size of Ti–6Al–4V during the process are revealed, and the final microstructures of the large ring under different processing conditions are explored. The results obtained show that (1) microstructure evolution follows the trend with the process progressing: the fine grain zone transfers from the surface layer (SL) to the middle layer (ML) of the ring; the poor β zone extends from the outside of the SL to the end-plane of the ML, and the rich β zone always locates at the SL. (2) decreasing the rotational velocity of the driver roll n 1, or increasing the feed rate of the idle roll v or the initial temperature of the ring T 0 contributes to more uniform distributions of β phase and its grain size, but results in the increase of the β phase volume fraction and grain size.
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References
Allwood JM, Kopp R, Michels D, Music O, Öztop M, Stanistree TF, Tekkaya AE, Tiedemman I (2005) The technical and commercial potential of an incremental ring rolling process. CIRP Ann Manuf Technol 54:233–236
Yang H, Fan XG, Sun ZC, Guo LG, Zhan M (2011) Recent development in plastic forming technology of titanium alloys. Sci China SER E 54:490–501
Hua L, Huang XG, Zhu CD (2001) Theory and technology of ring rolling. China Machine Press, Beijing (in Chinese)
Ma Q, Lin ZQ, Yu ZQ (2009) Prediction of deformation behavior and microstructure evolution in heavy forging by FEM. Int J Adv Manuf Technol 40:253–260
Zhou J, Wang FL, Wang MH, Xu WJ (2011) Study on forming defects in rolling process of large aluminum alloy ring via adaptive controlled simulation. Int J Adv Manuf Technol 55:95–106
Dunne FPE (1998) Inhomogeneity of microstructure in superplasticity and its effect on ductility. Int J Plasticity 14:413–433
Soppa E, Schmauder S, Fischer G, Thesing J, Ritter R (1999) Influence of the microstructure on the deformation behaviour of meta-matrix composites. Comput Mater Sci 16:323–332
Lin J, Dean TA (2005) Modelling of microstructure evolution in hot forming using unified constitutive equations. J Mater Process Tech 167:354–362
Ding HL, Hirai K, Homma T, Kamado S (2010) Numerical simulation for microstructure evolution in AM50 Mg alloy during hot rolling. Comput Mater Sci 47:919–925
Hu ZM, Brooks JW, Dean TA (1999) Experimental and theoretical analysis of deformation and microstructural evolution in the hot-die forging of titanium alloy aerofoil sections. J Mater Process Tech 88:251–265
Ding R, Guo ZX, Qian M (2007) Coupled mesoscopic constitutive modelling and finite element simulation for plastic flow and microstructure of two-phase alloy. Comput Mater Sci 40:201–212
Xu SG, Cao QX (1994) Numerical simulation of the microstructure in the ring rolling of hot steel. J Mater Process Tech 43:221–235
Sun ZC, Yang H, Ou XZ (2010) Effects of process parameters on microstructural evolution during hot ring rolling of AISI 5140 steel. Comput Mater Sci 49:134–142
Yeom JT, Kim JH, Hong JK, Park NK, Lee CS (2010) FE analysis of microstructure evolution during ring rolling process of a large-scale Ti–6Al–4V ring. Mater Sci Forum v 638–642:223–228
Fotiu PA, Nasser SN (1996) A universal integration algorithm for rate-dependent elastoplasticity. Comput Struct 59:1173–1184
Nie L, Li FG, Fang Y (2002) Process simulation and microstructure prediction of Ti–6Al–4V alloy in isothermal forging. Aerospace Materials & Technology: 45–49 (in Chinese)
Wang DN (1982) Metal plastic forming theory. China Machine Press, Beijing (in Chinese)
Wang M, Yang H, Sun ZC, Guo LG (2006) Dynamic explicit FE modeling of hot ring rolling process. T Nonferr Metal Soc 16:1274–1280
Yang H, Wang M, Guo LG, Sun ZC (2008) 3D coupled thermomechanical FE modeling of blank size effects on the uniformity of strain and temperature distributions during hot rolling of titanium alloy large ring. Comput Mater Sci 44:611–621
Wang M, Yang H, Sun ZC, Guo LG (2009) Analysis of coupled mechanical and thermal behaviors in hot rolling of large rings of titanium alloy using 3D dynamic explicit FEM. J Mater Process Tech 209:3384–3395
Hu ZM, Brooks JW, Dean TA (1998) The interfacial heat transfer coefficient in hot die forging of titanium alloy. Proc ImechE 212:485–496
Lee RS, Lin HC (1998) Process design based on the deformation mechanism for the non-isothermal forging of Ti–6Al–4V alloy. J Mater Process Tech 79:224–235
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Wang, M., Yang, H., Zhang, C. et al. Microstructure evolution modeling of titanium alloy large ring in hot ring rolling. Int J Adv Manuf Technol 66, 1427–1437 (2013). https://doi.org/10.1007/s00170-012-4420-9
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DOI: https://doi.org/10.1007/s00170-012-4420-9