Effect of Grain Size on Micro Ball Punch Deformation of SUS 304 Stainless Steel


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Micro metal forming is widely interested due to its potential in manufacturing micro parts with low costs and high production rate as the demands of compact devices have been increasing in many fields. This study uses micro ball punch deformation tests to investigate the effect of grain size on the formability of SUS 304 stainless steel sheets. The study employed annealing treatments to change the grain size of the sheets. By using three punches in different diameters in associated with three dies having an inner diameter of 2 mm and different die radii, it was able to perform micro bulging tests and obtain the bulging depths which were used to assess the formability of the sheets. The study shows that the grain size does affect the depth of the deformed dome in the ball punch deformation test at the micro scale.



Edited by:

Zone-Ching Lin, You-Min Huang, Chao-Chang Arthur Chen and Liang-Kuang Chen




C. C. Chang and L. Y. Lin, "Effect of Grain Size on Micro Ball Punch Deformation of SUS 304 Stainless Steel", Advanced Materials Research, Vol. 579, pp. 445-452, 2012

Online since:

October 2012




[1] T. Masuzawa, State of the art of micromachining, CIRP Annals-Manufacturing Technology, 49 (2000) 473-488.

[2] K. Ho, and S. Newman, State of the art electrical discharge machining (EDM), International Journal of Machine Tools and Manufacture, 43 (2003) 1287-1300.

DOI: https://doi.org/10.1016/s0890-6955(03)00162-7

[3] H. Van Brussel, J. Peirs, D. Reynaerts, A. Delchambre, G. Reinhart, N. Roth, M. Weck, and E. Zussman, Assembly of microsystems, CIRP Annals-Manufacturing Technology, 49 (2000) 451-472.

DOI: https://doi.org/10.1016/s0007-8506(07)63450-7

[4] U. Engel, and R. Eckstein, Microforming—from basic research to its realization, Journal of Materials Processing Tech., 125 (2002) 35-44.

DOI: https://doi.org/10.1016/s0924-0136(02)00415-6

[5] F. Vollertsen, H. Schulze Niehoff, and Z. Hu, State of the art in micro forming, International Journal of Machine Tools and Manufacture, 46 (2006) 1172-1179.

DOI: https://doi.org/10.1016/j.ijmachtools.2006.01.033

[6] L. Peng, F. Liu, J. Ni, and X. Lai, Size effects in thin sheet metal forming and its elastic–plastic constitutive model, Materials and Design, 28 (2007) 1731-1736.

DOI: https://doi.org/10.1016/j.matdes.2006.02.011

[7] M. Geiger, M. Kleiner, R. Eckstein, N. Tiesler, and U. Engel, Microforming, CIRP Annals-Manufacturing Technology, 50 (2001) 445-462.

DOI: https://doi.org/10.1016/s0007-8506(07)62991-6

[8] N. J. Petch, The cleavage strength of polycrystalline, J. Iron Steel Inst., 173 (1953) 25-28.

[9] J. T. Gau, C. Principe, and J. Wang, An experimental study on size effects on flow stress and formability of aluminm and brass for microforming, Journal of Materials Processing Tech., 184 (2007) 42-46.

DOI: https://doi.org/10.1016/j.jmatprotec.2006.11.003

[10] S. Mahabunphachai, and M. Koc, Investigation of size effects on material behavior of thin sheet metals using hydraulic bulge testing at micro/meso-scales, International Journal of Machine Tools and Manufacture, 48 (2008) 1014-1029.

DOI: https://doi.org/10.1016/j.ijmachtools.2008.01.006

[11] H. Hoffmann, and S. Hong, Tensile test of very thin sheet metal and determination of flow stress considering the scaling effect, CIRP Annals-Manufacturing Technology; 55 (2006) 263-266.

DOI: https://doi.org/10.1016/s0007-8506(07)60412-0

[12] T. A. Kals, and R. Eckstein, Miniaturization in sheet metal working, Journal of Materials Processing Tech., 103 (2000) 95-101.

DOI: https://doi.org/10.1016/s0924-0136(00)00391-5

[13] J. F. Michel, and P. Picart, Size effects on the constitutive behaviour for brass in sheet metal forming, Journal of Materials Processing Technology, 141 (2003) 439-446.

DOI: https://doi.org/10.1016/s0924-0136(03)00570-3

[14] L. Raulea, A. Goijaerts, L. Govaert, and F. Baaijens, Size effects in the processing of thin metal sheets, Journal of Materials Processing Technology, 115 (2001) 44-48.

DOI: https://doi.org/10.1016/s0924-0136(01)00770-1

[15] C. C. Chang, and J. C. Lin, Influence of grain size and temperature on micro upsetting of copper, Proceedings of the Institution of Mechanical Engineers, Part B: Journal of Engineering Manufacture, 226 (2012) 183-190.

DOI: https://doi.org/10.1177/0954405410396801