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Study on the influence of the springback on the hole expansion ratio characterization

Biotza Zubia, Julen Agirre, Eneko SaenzdeArgandona, Lander Galdos, Joseba Mendiguren

Abstract

Material formability has become one of the main problems, together with the springback, when stamping high added-value components for the automotive industry. The pursuit of weight reduction has led to higher strength alloys which show a lower formability. Among the different formability criteria (e.g. necking, edge strain, fracture and radius cracks) the edge strain is starting to be a critical aspect on the process planning stage. In order to characterise this criteria, the hole expansion ratio (HER) is conducted under the ISO 16630 standard. In the last years, multiple authors have analysed the HER of different alloys and its dependency on different process variables i.e. cutting method, test speed, material strength. However, the influence of the springback phenomenon on the test result has not been previously analysed. In this work, the influence of the springback on the HER values has been analysed for a mild steel DX54D and a third generation steel Fortiform1050 with a novel measuring technique. From the obtained results, it can be stated that the springback has a critical influence on the characterised HER value, mainly for the third generation steel, leading to differences of about 40% on the HER limits.


Keywords

Formability; hole expansion test; hole expansion ratio; Fortiform 1050; springback

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References

T. B. Hilditch, T. de Souza, and P. D. Hodgson, “Properties and automotive applications of advanced high-strength steels (AHSS),” in Welding and Joining of Advanced High Strength Steels (AHSS), Elsevier, 2015, pp. 9–28.

R. Pla-Ferrando, S. Sánchez-Caballero, M. J. Reig, R. Pla, M. A. Sellés, and V. J. Seguí, “Advanced high strength steel (AHSS) TWIP: A door to the future in metal forming,” in The 4th Manufacturing Engineering Society International Conference, 2012, pp. 65–73.

K. Mori, Y. Abe, and Y. Suzui, “Improvement of stretch flangeability of ultra high strength steel sheet by smoothing of sheared edge,” J. Mater. Process. Technol., vol. 210, no. 4, pp. 653–659, 2010.

V. Uthaisangsuk, U. Prahl, and W. Bleck, “Stretch-flangeability characterisation of multiphase steel using a microstructure based failure modelling,” Comput. Mater. Sci., vol. 45, no. 3, pp. 617–623, 2009.

E. Silvestre, J. Mendiguren, L. Galdos, and E. S. De Argandoña, “International Journal of Mechanical Sciences Comparison of the hardening behaviour of different steel families : From mild and stainless steel to advanced high strength steels,” Int. J. Mech. Sci., vol. 101–102, pp. 10–20, 2015.

S. Matsuoka, K. Hasegawa, and Y. Tanaka, “Newly-Developed Ultra-High Tensile Strength Steels with Excellent Formability and Weldability,” JFE Tech. Rep., no. 10, pp. 13–18, 2007.

I. Gil, J. Mendiguren, L. Galdos, E. Mugarra, and E. Saenz De Argandoña, “Influence of the pressure dependent coefficient of friction on deep drawing springback predictions,” Tribol. Int., vol. 103, pp. 266–273, 2016.

A. Grajcar, R. Kuziak, and W. Zalecki, “Third generation of AHSS with increased fraction of retained austenite for the automotive industry,” Arch. Civ. Mech. Eng., vol. 12, no. 3, pp. 334–341, 2012.

B. C. De Cooman, K.-G. Chin, and J. Kim, “High Mn TWIP steels for automotive applications,” in New Trends and Developments in Automotive System Engineering, 2011, pp. 101–128.

D. K. Matlock, J. G. Speer, E. De Moor, and P. J. Gibbs, “Recent developmets in advanced high strength sheet steels for automotive applications: an overview,” JESTECH, vol. 15, no. 1, pp. 1–12, 2012.

C. M. Tamarelli, “The evolving use of advanced high-strength steels for automotive applications,” 2000.

ISO 16630:2009 (E). Metallic materials-Sheet and strip-Hole expanding test.

P. Larour, H. Pauli, J. Freudenthaler, J. Lackner, F. Leomann, and G. Schestak, “Experimental artefacts on ISO 16630 hole expansion ratio,” in IDDRG 2016 International Conferece, 2016, pp. 480–498.

K. Hashimoto, T. Kuwabara, E. Iizuka, and J. Yoon, “Hole expansion simulation of high strength steel sheet,” Int. J. Mater. Form., vol. 3, no. 1, pp. 259–262, 2010.

L. Xu, F. Barlat, M. G. Lee, K. S. Choi, and X. Sun, “Hole expansion of dual phase steels,” High Perform. Struct. Mater. VI, vol. 124, pp. 75–83, 2012.

K. Wang, M. Luo, and T. Wierzbicki, “Experiments and modeling of edge fracture for an AHSS sheet,” Int. J. Fract., vol. 187, no. 2, pp. 245–268, 2014.

J. I. Yoon et al., “Correlation between fracture toughness and stretch-flangeability of advanced high strength steels,” Mater. Lett., vol. 180, pp. 322–326, 2016.

C. Krempaszky, P. Larour, J. Freudenthaler, and E. Werner, “Towards More Efficient Hole Expansion Testing,” in IDDRG 2014 Conference, 2014, pp. 204–209.

Dünckelmeyer, A. K. M., C. Krempaszky, and E. Werner, “Instrumented hole expansion test,” in Proceeding of International Doctoral Seminar 2009, 2009, pp. 411–419.

S. K. Paul, M. Mukherjee, S. Kundu, and S. Chandra, “Prediction of hole expansion ratio for automotive grade steels,” Comput. Mater. Sci., vol. 89, pp. 189–197, 2014.

J. Krawczyk, Z. Gronostajski, S. Polak, K. Jaśkiewicz, W. Chorzępa, and I. Pęcak, “The Influence of the Punch Shape and the Cutting Method on the Limit Strain in the Hole Expansion Test,” Key Eng. Mater., vol. 716, pp. 129–137, 2016.

S. H. Choi, E. Y. Kim, and S. I. Kim, “The micromechanical deformation behaviors of hot-rolled 590FB steel during hole-expansion test,” Int. J. Plast., vol. 58, pp. 184–200, 2014.

X. Chen, H. Jiang, Z. Cui, C. Lian, and C. Lu, “Hole expansion characteristics of ultra high strength steels,” in Procedia Engineering, 2014, vol. 81, pp. 718–723.

M. Li, C. J. VanTyne, and Y. H. Moon, “The effect of mechanical properties on hole flangeability of stainless steel sheets,” J. Mech. Sci. Technol., vol. 29, no. 12, pp. 5233–5239, 2015.

F. Stachowicz, “Estimation of hole-flange ability for deep drawing steel sheets,” Arch. Civ. Mech. Eng., vol. 8, no. 2, pp. 167–172, 2008.

R. Narayanasamy, C. S. Narayanan, P. Padmanabhan, and T. Venugopalan, “Effect of mechanical and fractographic properties on hole expandability of various automobile steels during hole expansion test,” Int. J. Adv. Manuf. Technol., vol. 47, no. 1–4, pp. 365–380, 2010.

S. K. Paul, “Non-linear Correlation Between Uniaxial Tensile Properties and Shear-Edge Hole Expansion Ratio,” J. Mater. Eng. Perform., vol. 23, no. 10, pp. 3610–3619, 2014.

R. J. Comstock, D. K. Scherrer, and R. D. Adamczyk, “Hole Expansion in a Variety of Sheet Steels,” J. Mater. Eng. Perform., vol. 15, no. 6, pp. 675–683, 2006.

J. Li, H. Wang, and D.-W. Yan, “Influence of Experiment Methods on Limit Hole Expansion Ratio,” in Advanced Manufacture Technology and Industrial Application, 2016.

L. Xu, F. Barlat, and M. G. Lee, “Hole expansion of twinning-induced plasticity steel,” Scr. Mater., vol. 66, no. 12, pp. 1012–1017, 2012.

Q. B. Le, J. A. Devries, S. F. Golovashchenko, and J. J. F. Bonnen, “Analysis of sheared edge formability of aluminum,” J. Mater. Process. Technol., vol. 214, no. 4, pp. 876–891, 2014.

T. Kuwabara, T. Mori, M. Asano, T. Hakoyama, and F. Barlat, “Material modeling of 6016-O and 6016-T4 aluminum alloy sheets and application to hole expansion forming simulation,” Int. J. Plast., vol. 93, pp. 164–186, 2016.

R. D. Adamczyk and G. M. Michal, “Shearen Edge Extension of High-Strength Cold-Rolled Steels,” J. Appl. Met., vol. 4(2), pp. 157–163, 1986.

S. Sadagopan, C. Wong, M. Huang, B. Yan, and D. Urban, “Formability Characterization of a New Generation of High Strength Steels,” 2003.

L. Chen, J. Kim, S. Kim, G. Chin, and B. C. De Cooman, “On the Stretch-Flangeability of High Mn TWIP Steels,” Mater. Sci. Forum, vol. 654, pp. 278–281, 2010.

K. Chung, N. Ma, T. Park, D. Kim, D. Yoo, and C. Kim, “A Modified Damage Model for Advanced High Strength Steel Sheets,” Int. J. Plast., vol. 27, pp. 1485–1511, 2011.

X. H. Hu, X. Sun, and S. F. Golovashchenko, “An integrated finite element-based simulation framework: From hole piercing to hole expansion,” Finite Elem. Anal. Des., vol. 109, pp. 1–13, 2016.


DOI: http://dx.doi.org/10.18063/msmr.v2i1.408
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