Crystal Plasticity Analysis of Mechanical Response and Size Effect in Two Phase Alloys with Dispersion of Fine Particles

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Plastic deformation and dislocations accumulation in a steel alloy dispersed with vanadium carbide particles is numerically analyzed by a crystal plasticity finite element technique and work hardening characteristics are discussed. Increment of dislocation density that contributes to work hardening is calculated from the mean free path of dislocations. The mean free path is defined by the spacing of forest dislocations and the average spacing of dispersed particles. Obtained yield stress and work hardening characteristics was close to that of experimental result, except that the value of work hardening rate was higher than that of experimental one.

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Edited by:

Yeong-Maw Hwang and Cho-Pei Jiang

Pages:

264-268

Citation:

Y. Okuyama and T. Ohashi, "Crystal Plasticity Analysis of Mechanical Response and Size Effect in Two Phase Alloys with Dispersion of Fine Particles", Key Engineering Materials, Vol. 626, pp. 264-268, 2015

Online since:

August 2014

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[1] Ohashi, T., Three dimensional structures of the geometrically necessary dislocations in matrix-inclusion systems under uniaxial tensile loading, Int. J. Plast., 20(2004), 1093-1109.

DOI: https://doi.org/10.1016/j.ijplas.2003.10.005

[2] Nakada, N., Murakami, M., Tsuchiyama, T. and Takaki, S., Aural presentation at ISIJ meeting of special interest group on strain hardening and microstructures, Mar. 2011, Tokyo.

[3] Imanami, Y., Murakami, M., Nakada, N., Tsuchiyama, T. and Takaki, S., Contribution of Soft Copper Particle on Work Hardening Behavior In Ferritic Iron, ISIJ Int., 49(2009), 1225-1228.

DOI: https://doi.org/10.2355/isijinternational.49.1225

[4] Ohashi,T., Numerical modelling of plastic multislip in metal crystals of f. c. c. type, Phil. Mag., A70(1994), 793.

[5] Ohashi,T., Finite-element analysis of plastic slip and evolution of geometrically necessary dislocations in fcc crystals, Phil. Mag. Lett., 75(1997), 51.

DOI: https://doi.org/10.1080/095008397179741

[6] Ohashi, T., Kawamukai, M. and Zbib, H., A Multiscale Approach for Modeling Scale-Dependent Yield Stress in Polycrystalline Metals, Int. J. Plasticity, 23(2007), 897-914.

DOI: https://doi.org/10.1016/j.ijplas.2006.10.002

[7] Ying-Hwa Yeh, Nakashima, H., Kurishita, H., Goto, S. and Yoshinaga, H., Threshold Stress for High-Temperature Creep in Particle Strenghened AL-1. 5 vol%Be Alloys, Materials Transactions, JIM, 31(1990), 284-292.

DOI: https://doi.org/10.2320/matertrans1989.31.284