Size Effect Mechanism on Foil Rolling Analyzed by Crystal Plasticity Finite Element Method


Article Preview

A novel computational model is presented for the representation of polycrystalline grain structures and crystal plasticity finite element model are used to investigate size effect due to grain orientation and number of grains through the thickness, in term of activity of slip system, roll force and the scatter involved. It is predicted that increasing the number of grains through the thickness has detrimental effects on mechanical performance. It is clear from the current study that foil thickness significantly influences the deformation heterogeneity which leads to non-uniform distributions of strain and the inhomogeneous slip systems active in the cold rolled samples. It is found that the decrease of roll force and slip systems activities in surface grains are caused by the increasing of free surface grain effect when the thickness is decreased.



Advanced Materials Research (Volumes 1120-1121)

Edited by:

Antonio Apicella






S. D. Chen et al., "Size Effect Mechanism on Foil Rolling Analyzed by Crystal Plasticity Finite Element Method", Advanced Materials Research, Vols. 1120-1121, pp. 1424-1428, 2015

Online since:

July 2015




* - Corresponding Author

[1] U. Engel, R. Eckstein, Microforming-from basic research to its realization, J. Mater. Process. Technol. 125-126 (2002) 35-44.

[2] T.A. Kals, R. Eckstein, Miniaturization in sheet metal working, J. Mater. Process. Technol. 103 (2000) 95-101.

[3] M.W. Fu, B. Yang, W.L. Chan, Experimental and simulation studies of micro blanking and deep drawing compound process using copper sheet, J. Mater. Process. Technol. 213 (2013) 101-110.

DOI: 10.1016/j.jmatprotec.2012.08.007

[4] A. Molotnikov, R. Lapovok, C.H.J. Davies, W. Cao, Y. Estrin, Size effect on the tensile strength of fine-grained copper, Scr. Mater. 59 (2008) 1182-1185.

DOI: 10.1016/j.scriptamat.2008.08.004

[5] D.K. Leu, Modeling of size effect on tensile flow stress of sheet metal in microforming, J. Manuf. Sci. Eng. 131 (2009) 0110021-0110028.

DOI: 10.1115/1.3039520

[6] W.L. Chan, M.W. Fu, J. Lu, J.G. Liu, Modeling of the grain size effect on the micro deformation behavior in micro-forming of pure copper, Mater. Sci. Eng. A 527 (2010) 6638-6648.

DOI: 10.1016/j.msea.2010.07.009

[7] H.N. Lu, D.B. Wei, Z.Y. Jiang, X.H. Liu, K. Manabe, Modelling of size effects in microforming process with consideration of grained heterogeneity, Comp. Mater. Sci. 77 (2013) 44-52.

DOI: 10.1016/j.commatsci.2013.03.033

[8] I. Özdemir, Grain statistics induced size effect in the expansion of metallic micro rings, Inter. J. of Mech. Sci. 87 (2014) 52-59.

[9] L.Y. Si, C. Lu, N.N. Huyne N N, A.K. Tieu A K, X.H. Liu, Simulation of rolling behaviour of cubic oriented al single crystal with crystal plasticity FEM, J. Mater. Process. Technol. 201 (2008) 79-84.

DOI: 10.1016/j.jmatprotec.2007.11.227

[10] J.L. Bassani, T.Y. Wu, Latent Hardening in Single Crystals II. Analytical Characterization and Predictions, P. Roy. Soc. A-Math. Phy. 435 (1991) 21-41.

[11] Y.G. Huang, Division of Engineering and Applied Science, Harvard University, (1991).

In order to see related information, you need to Login.