Crystal Plasticity Analysis of Scale Effect on Tensile Properties of Ferrite/Cementite Fine Lamellar Structure under Lattice Strain

Yohei Yasuda; Tetsuya Ohashi; Takuro Sugiyama

doi:10.4028/www.scientific.net/KEM.626.145

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HomeKey Engineering MaterialsKey Engineering Materials Vol. 626Crystal Plasticity Analysis of Scale Effect on...

Crystal Plasticity Analysis of Scale Effect on Tensile Properties of Ferrite/Cementite Fine Lamellar Structure under Lattice Strain

Abstract:

Tensile properties of ferrite lamella in pearlite under lattice strain are examined by a strain gradient crystal plasticity analysis. Tensile direction is made to be parallel to the lamella. Obtained results of macroscopic stress-strain relation of the lamella show significant increase of yield stress and strain hardening rate with the reduction of the lamella thickness and further increase of the yield stress with positive normal lattice strain parallel to the tensile direction in the ferrite layer. Whereas normal lattice strain perpendicular to the tensile direction contributes little to the tensile properties.

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Periodical:

Key Engineering Materials (Volume 626)

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145-148

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.626.145

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Online since:

August 2014

Authors:

Yohei Yasuda*, Tetsuya Ohashi, Takuro Sugiyama

Keywords:

Crystal Plasticity Analysis, Dislocation, Fine Lamellar Structure, Lattice Strain, Scale Effect, Tensile Properties

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