Abstract
The deformation inhomogeneity of transitional region plays a great role in both the macro and micro forming qualities in the local loading forming. In this work, the dependence of deformation inhomogeneity of transitional region on the die parameters in the local loading forming of Ti-alloy rib-web component was studied based on finite element (FE) simulation. To evaluate the deformation inhomogeneity, an area-weighted strain inhomogeneity index was employed, which is calculated through the user subroutine of FE software (DEFORM-2D). It is found that there exist two kinds of strain concentration areas contributing to the deformation inhomogeneity of transitional region. One kind is the almost symmetric strain concentration area at the non-partitioned ribs, which is essentially related to the filling of rib. Another kind is the slant strain concentration area at the partitioned rib, which is caused by the multi-step loading during local loading forming. Besides, the effects of die parameters on the deformation inhomogeneity of transitional region were studied by the combination of orthogonal experiment design and FE simulation. The results suggest that the draft angle of the right rib is the most significant factor for both the deformation inhomogeneities of the partitioned rib region and whole transitional region. And, these two deformation inhomogeneities both decrease with the draft angle of the right rib decreasing. Furthermore, the relationship between die parameters and deformation inhomogeneity of transitional region is developed using the response surface methodology (RSM). Based on the RSM model, the die parameters were optimized to improve the deformation homogeneity of transitional region. The results will provide basis for the design of die parameters to improving the deformation and microstructure homogeneities in the isothermal local loading forming of Ti-alloy rib-web component.
Article PDF
Similar content being viewed by others
Avoid common mistakes on your manuscript.
Reference
Yang H, Fan XG, Sun ZC, Guo LG, Zhan M (2011) Recent developments in plastic forming technology of titanium alloys. Sci China-Technol Sci 54:490–501
Sun ZC, Yang H (2009) Microstructure and mechanical properties of TA15 titanium alloy under multi-step local loading forming. Mater Sci Eng A 523:184–192
Zhang DW, Yang H, Sun ZC (2010) Analysis of local loading forming for titanium-alloy T-shaped components using slab method. J Mater Process Technol 210:258–266
Zhang DW, Yang H, Sun ZC, Fan XG (2012) Deformation behavior of variable-thickness region of billet in rib-web component isothermal local loading process. Int J Adv Manuf Technol 63(1–4):1–12
Zhang DW, Yang H (2013) Metal flow characteristics of local loading forming process for rib-web component with unequal-thickness billet. Int J Adv Manuf Technol 68(9–12):1949–1965
Zhang DW, Yang H (2013) Numerical study of the friction effects on the metal flow under local loading way. Int J Adv Manuf Technol 68:1339–1350
Fan XG, Yang H, Sun ZC, Zhang DW (2010) Effect of deformation inhomogeneity on the microstructure and mechanical properties of large-scale rib-web component of titanium alloy under local loading forming. Mater Sci Eng A 527:5391–5399
Zhang YQ, Jiang SY, Zhao YA, Shan DB (2014) Isothermal precision forging of aluminum alloy ring seats with different preforms using FEM and experimental investigation. Int J Adv Manuf Technol 72:1693–1703
Kim JB, Seo WS, Park K (2012) Damage prediction in the multistep forging process of subminiature screws. Int J Precis Eng Manuf 13(9):1619–1624
Abdullah AB, Sapuan SM, Samad Z, Khaleed HMT, Aziz NA (2013) Numerical investigation of geometrical defect in cold forging of an AUV blade pin head. J Manuf Process 15(1):141–150
Chan WL, MW F, Lu J, Chan LC (2009) Simulation-enabled study of folding defect formation and avoidance in axisymmetrical flanged components. J Mater Process Technol 209(11):5077–5086
Yang YH, Liu D, He ZY, Luo ZJ (2010) Optimization of preform shapes by RSM and FEM to improve deformation homogeneity in aerospace forgings. Chinese J Aeronaut 23:260–267
Zhang DW, Yang H, Sun ZC, Fan XG (2011) Deformation behavior under die partitioning boundary during titanium alloy large-scale rib-web component forming by isothermal local loading. Proceedings of the 12th World Conference on Titanium. Beijing: Science Press, pp. 328
Zhang DW, Yang H (2014) Distribution of metal flowing into unloaded area in the local loading process of titanium alloy rib-web component. Rare Metal Mater Eng 43(2):296–300
Gao PF, Yang H, Fan XG (2014) Quantitative analysis of the material flow in transitional region during isothermal local loading forming of Ti-alloy rib-web component. Int J Adv Manuf Technol 75(9–12):1339–1347
Gao PF, Yang H, Fan XG, Lei PH (2014) Forming defects control in transitional region during isothermal local loading of Ti-alloy rib-web component. Int J Adv Manuf Technol 76(5–8):857–868
Gao PF, Yang H, Fan XG, Lei PH (2015) Quick prediction of the folding defect in transitional region during isothermal local loading forming of titanium alloy large-scale rib-web component based on folding index. J Mater Process Technol 219:101–111
Sun ZC, Yang H, Sun NG (2012) Effects of parameters on inhomogeneous deformation and damage in isothermal local loading forming of Ti-Alloy component. J Mater Eng Perform 21:313–323
Zhang DW, Yang H, Sun ZC, Fan XG (2011) Influences of fillet radius and draft angle on local loading process of titanium alloy T-shaped components. Trans Nonferrous Met Soc China 21:2693–2704
Saxena RK, Dixit PM (2009) Finite element simulation of earing defect in deep drawing. Int J Adv Manuf Technol 45:219–233
Zhou J, Wang F, Wang M, Xu W (2011) Study on forming defects in the rolling process of large aluminum alloy ring via adaptive controlled simulation. Int J Adv Manuf Technol 55:95–106
Li F, Lin JF, Yuan SJ, Liu XJ (2009) Effect of inner cone punch on metal flow in extrusion process. Int J Adv Manuf Technol 42:489–496
Shen, CW (2007) Research on material constitution models of TA15 and TC11 titanium alloys in hot deformation process. Master Thesis, Northwestern Polytechnical University
Yang YH, Liu D, He ZY, Luo ZJ (2011) Evaluation of microstructure homogeneity in TC11 titanium alloy blisk forging. J Aeronaut Mater 32: 25–29 (in Chinese)
Wu X, Leung D (2011) Optimization of biodiesel production from camelina oil using orthogonal experiment. Appl Energ 88:3615–3624
Shen Q, Zheng Y, Li S, Ding H, Xu Y, Zheng C, Thern M (2016) Optimize process parameters of microwave-assisted EDTA method using orthogonal experiment for novel BaCoO3-δ perovskite. J Alloy Comp 658:125–131
Wang H, Li GY, Zhong ZH (2008) Optimization of sheet metal forming processes by adaptive response surface based on intelligent sampling method. J Mater Process Technol 197:77–88
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Gao, P., Li, X., Yang, H. et al. Influence of die parameters on the deformation inhomogeneity of transitional region during local loading forming of Ti-alloy rib-web component. Int J Adv Manuf Technol 90, 2109–2119 (2017). https://doi.org/10.1007/s00170-016-9443-1
Received:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s00170-016-9443-1