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Proceedings Paper

Molecular dynamic simulation of Ti3Al brittle fracture behavior
Author(s): Liudmila I. Yakovenkova; Lidia E. Karkina
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Paper Abstract

The decohesion energy and the energy of unstable stacking faults for all cracking planes and dislocation slip systems observed experimentally are calculated using the molecular dynamics method with N-body interatomic potentials. A dimensionless parameter characterizing the brittle behavior of the material is calculated for basis, prism, and pyramid planes in terms of the model elaborated by Kelly and extended by Rice and Thompson. Cleavage in Ti3A1 is due to low decohesion energy values, which facilitates cracking, and high energies of unstable stacking faults, which prevents the formation of a plastic zone and stress relaxation at its top.

Paper Details

Date Published: 10 April 2007
PDF: 5 pages
Proc. SPIE 6597, Nanodesign, Technology, and Computer Simulations, 65970F (10 April 2007); doi: 10.1117/12.726719
Show Author Affiliations
Liudmila I. Yakovenkova, Institute of Metal Physics (Russia)
Lidia E. Karkina, Institute of Metal Physics (Russia)

Published in SPIE Proceedings Vol. 6597:
Nanodesign, Technology, and Computer Simulations
Alexander I. Melker; Teodor Breczko, Editor(s)

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