Experimental Approach for Investigation of Micro Void Behavior on Dual Phase Steel during Plastic Deformation

Takashi Ishikawa; T. Ishiguro; N. Yukawa; H. Yoshida; N. Fujita

doi:10.4028/www.scientific.net/KEM.535-536.393

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HomeKey Engineering MaterialsKey Engineering Materials Vols. 535-536Experimental Approach for Investigation of Micro...

Experimental Approach for Investigation of Micro Void Behavior on Dual Phase Steel during Plastic Deformation

Abstract:

In this research, micro void behavior of DPS, which has different phase volume fraction, is investigated experimentally. Prepared specimens have different amount of alloy element and heat treatment condition. Although both these specimens have almost the same strength and total elongation, these showed quite different local elongations, hole expanding ratio and bending ductility. In order to observe micro void behavior specimens, that have different strain levels, are prepared. These sectional areas are observed by laser microscope after cutting and polishing. The change ratio of micro void volume fraction of DPS, which showed high local ductility, is lower than that of the other DPS. Concerning low ductility DPS, small size void (less than 3µm diameter) increases rapidly not only at grain boundary but in the ferrite grain, especially at initial stage of deformation. On the other hand, nucleation of micro void of high ductility DPS is inhibited.

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Periodical:

Key Engineering Materials (Volumes 535-536)

Pages:

393-396

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.535-536.393

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Online since:

January 2013

Authors:

Takashi Ishikawa, T. Ishiguro, N. Yukawa, H. Yoshida, N. Fujita

Keywords:

Dual Phase Steel, Martensite Volume Fraction, Micro-Void

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References

[1] Y. Kuriyama, K. Yamazaki, K. Hashimoto, H. Ohashi, Progress in ULSAB-AVC Project, J. Jpn. Weld. Soc. 71 (2002) 554-558.

DOI: 10.2207/qjjws1943.71.554

Google Scholar

[2] K. Kunishige, Recent Progress and Prospect of High Strength Sheet Steel for Automotive Use, J. Soc. Mater. Sci., Jpn. 50 (2001) 47-54.

Google Scholar

[3] D. Kondo, K. Kunishige et al., Effects of the Grain Size and Volume Fraction of Second Hard Phase on Mechanical Properties of Dual Phase Steel, Tetsu-to-Hagane 92 (2006) 457-463.

DOI: 10.2355/tetsutohagane1955.92.7_457

Google Scholar

[4] J. Kadkhodapour, A. Butz, S. Ziaei Rad, Mechanisms of void formation during tensile testing in a commercial dual-phase steel, Acta Mater. 59 (2011) 2575–2588.

DOI: 10.1016/j.actamat.2010.12.039

Google Scholar

[5] P. W. Bridgman, Studies in large plastic flow and fracture, McGraw-Hill, New York, 1952.

Google Scholar