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Finite Element Analysis on the Effect of the Texture to the Crack Tip Plasticity in Aluminum Alloy

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Abstract:

Plasticity zone at crack tip of aluminum alloy with fcc structure is investigated in order to analyze the effect of crystal orientation to the plasticity distribution on crack tip, as well as the effect to CTOD and J-integral, which is implemented using finite element code in Abaqus with a rate dependent crystal plasticity theory. The results show that the crack tip plasticity, stresses and CTOD are significantly affected by grain orientations. When the grains have single textures, Cube and S orientations have a strong ability to against crack propagation. However, when the grains combine textures, the increasing of misorientation enhances the resistance for crack growth. And when the tilt angle is higher, the crack deflection is promoted to reduce the crack propagation rate.

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Periodical:

Materials Science Forum (Volume 850)

Pages:

328-333

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.850.328

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Online since:

March 2016

Authors:

Ran Liu, Hui Huang, Jia Ju Liu, Wei Wang, Li Rong, Zuo-Ren Nie

Keywords:

Crystal Orientation, CTOD, J-Integral, Plastic Zone

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© 2016 Trans Tech Publications Ltd. All Rights Reserved

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DOI: 10.1016/s1875-5372(14)60054-0

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