Edge cracks in nickel and aluminium single crystals: A molecular dynamics study

Journal Article · Mon May 23 00:00:00 EDT 2016 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.4948007· OSTI ID:22608764

Chandra, Sagar; Chavan, V. M.; Patel, R. J. ^[1]; Samal, M. K. ^[2]

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1. Refueling Technology Division, Bhabha Atomic Research Centre, Mumbai-400085 (India)
2. Reactor Safety Division, Bhabha Atomic Research Centre, Mumbai-400085 (India)

A molecular dynamics study of edge cracks in Ni and Al single crystals under mode-I loading conditions is presented. Simulations are performed using embedded-atom method potentials for Ni and Al at a temperature of 0.5 K. The results reveal that Ni and Al show different fracture mechanisms. Overall failure behavior of Ni is brittle, while fracture in Al proceeds through void nucleation and coalescence with a zig-zag pattern of crack growth. The qualitative nature of results is discussed in the context of vacancy-formation energies and surface energies of the two FCC metals.

• OSTI ID: 22608764
• Journal Information: AIP Conference Proceedings, Vol. 1731, Issue 1; Conference: DAE solid state physics symposium 2015, Uttar Pradesh (India), 21-25 Dec 2015; Other Information: (c) 2016 Author(s); Country of input: International Atomic Energy Agency (IAEA); ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ALUMINIUM
ATOMS
COALESCENCE
CRACK PROPAGATION
CRACKS
FCC LATTICES
FORMATION HEAT
FRACTURES
MOLECULAR DYNAMICS METHOD
MONOCRYSTALS
NICKEL
NUCLEATION
SIMULATION
SURFACE ENERGY
SURFACES
TEMPERATURE RANGE 0000-0013 K
VACANCIES