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Brittle versus ductile fracture behaviour in nanotwinned FCC crystals

Journal Article


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Abstract


  • Molecular dynamic simulation (MD) was used to study the brittle versus ductile fracture behaviour in nanotwinned Face Centred Cubic (FCC) crystals subjected to the uniaxial tensile deformation. A fundamental brittle versus ductile fracture is observed, which can be mainly understood in terms of the ratio of surface energy to unstable stacking fault energy or the ratio of ideal tensile strength to ideal shear strength in atomic model with a confined range of twinning spacing. Results show that the small ratio value is favourable for the brittle fracture, and vice versa, the big one supports the ductile fracture.

Publication Date


  • 2015

Citation


  • Pei, L., Lu, C., Tieu, K., Zhao, X., Zhang, L., Cheng, K. & Michal, G. (2015). Brittle versus ductile fracture behaviour in nanotwinned FCC crystals. Materials Letters, 152 65-67.

Scopus Eid


  • 2-s2.0-84926379251

Ro Full-text Url


  • http://ro.uow.edu.au/cgi/viewcontent.cgi?article=4964&context=eispapers

Ro Metadata Url


  • http://ro.uow.edu.au/eispapers/3945

Has Global Citation Frequency


Number Of Pages


  • 2
  • 2

Start Page


  • 65

End Page


  • 67

Volume


  • 152

Place Of Publication


  • Netherlands

Abstract


  • Molecular dynamic simulation (MD) was used to study the brittle versus ductile fracture behaviour in nanotwinned Face Centred Cubic (FCC) crystals subjected to the uniaxial tensile deformation. A fundamental brittle versus ductile fracture is observed, which can be mainly understood in terms of the ratio of surface energy to unstable stacking fault energy or the ratio of ideal tensile strength to ideal shear strength in atomic model with a confined range of twinning spacing. Results show that the small ratio value is favourable for the brittle fracture, and vice versa, the big one supports the ductile fracture.

Publication Date


  • 2015

Citation


  • Pei, L., Lu, C., Tieu, K., Zhao, X., Zhang, L., Cheng, K. & Michal, G. (2015). Brittle versus ductile fracture behaviour in nanotwinned FCC crystals. Materials Letters, 152 65-67.

Scopus Eid


  • 2-s2.0-84926379251

Ro Full-text Url


  • http://ro.uow.edu.au/cgi/viewcontent.cgi?article=4964&context=eispapers

Ro Metadata Url


  • http://ro.uow.edu.au/eispapers/3945

Has Global Citation Frequency


Number Of Pages


  • 2
  • 2

Start Page


  • 65

End Page


  • 67

Volume


  • 152

Place Of Publication


  • Netherlands