![]() Qin E, Lu L, Tao N, Lu K (2009) Enhanced fracture toughness of bulk nanocrystalline Cu with embedded nanoscale twins. Plimpton S (1995) Fast parallel algorithms for short-range molecular dynamics. Mendelev M, Han S, Srolovitz D, Ackland G, Sun D, Asta M (2003) Development of new interatomic potentials appropriate for crystalline and liquid iron. Lu L, Chen X, Huang X, Lu K (2009) Revealing the maximum strength in nanotwinned copper. ![]() Liu L, Wang J, Gong S, Mao S (2014) Atomistic observation of a crack tip approaching coherent twin boundaries. Li X, Wei Y, Lu L, Lu K, Gao H (2010) Dislocation nucleation governed softening and maximum strength in nano-twinned metals. ![]() Li J (2003) AtomEye: an efficient atomistic configuration viewer. Kim SW, Li X, Gao H, Kumar S (2012) In situ observations of crack arrest and bridging by nanoscale twins in copper thin films. Kelchner CL, Plimpton S, Hamilton J (1998) Dislocation nucleation and defect structure during surface indentation. Kedharnath A, Panwar AS, Kapoor R (2017) Molecular dynamics simulation of the interaction of a nano-scale crack with grain boundaries in \(\alpha\)-Fe. source number: competing mechanisms in the yield of twinned gold nanowires of finite length. Gordon PA, Neeraj T, Luton MJ, Farkas D (2007) Crack-tip deformation mechanisms in \(\alpha \)-Fe and binary Fe alloys: an atomistic study on single crystals. Phys Rev B 81(15):155430įang W, Xie H, Yin F, Li J, Fang Q et al (2016) Molecular dynamics simulation of grain boundary geometry on crack propagation of bi-crystal aluminum. Scr Mater 63(1):50ĭeng C, Sansoz F (2010) Effects of twin and surface facet on strain-rate sensitivity of gold nanowires at different temperatures. Acta Mater 58(7):2293ĭeng C, Sansoz F (2010) Repulsive force of twin boundary on curved dislocations and its role on the yielding of twinned nanowires. Phys Rev B 75(21):212104Ĭheng Y, Jin ZH, Zhang Y, Gao H (2010) On intrinsic brittleness and ductility of intergranular fracture along symmetrical tilt grain boundaries in copper. J Appl Phys 103(9):094322Ĭhen Z, Jin Z, Gao H (2007) Repulsive force between screw dislocation and coherent twin boundary in aluminum and copper. J Nucl Mater 472:20Īnderoglu O, Misra A, Wang H, Zhang X (2008) Thermal stability of sputtered Cu films with nanoscale growth twins. Finally, an interesting relationship has been observed between the crack growth rate and flow stress.Īl-Motasem AT, Mai NT, Choi ST, Posselt M (2016) Atomistic study on mixed-mode fracture mechanisms of ferrite iron interacting with coherent copper and nickel nanoclusters. Further, increasing the number of twin boundaries increased the amount of plastic deformation leading to better crack resistance and high failure strains. ![]() However, following the introduction of twin boundaries, a noticeable plastic deformation has been observed at the crack tip. The results indicate that the (111) \(\langle\)110 \(\rangle\) crack in single crystal BCC Fe grows in brittle manner. In order to study the influence of twin boundaries on the crack growth behaviour, single and multiple twin boundaries were introduced perpendicular to crack growth direction. The growth of an atomically sharp crack with an orientation of (111) \(\langle\)110 \(\rangle\) (crack plane/crack front) has been studied under mode-I loading at constant strain rate. In this paper, the effect of twin boundaries on the crack growth behaviour of single crystal BCC Fe has been investigated using molecular dynamics simulations.
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