An analysis on nanovoid growth in body-centered cubic single crystalline vanadium

Molecular dynamics simulations of void shrinkage in γ-TiAl single crystal

“…Case L x = L y L z R (void) Volume fractions (%) 1 3 0 a 0 30c 0 1a 0 0.01 2 3 0 a 0 30c 0 2a 0 0.12 3 3 0 a 0 30c 0 3a 0 0.42 4 3 0 a 0 30c 0 4a 0 0.99 5 3 0 a 0 30c 0 5a 0 1.94 6 3 0 a 0 30c 0 6a 0 3.35 Table 3 Geometric parameters for specimens with different void radius.…”

“…In recent years, the mechanical behavior of materials with voids has become a hot topic. Many studies [1][2][3][4][5] concentrated on materials with nano-voids to analyze the deformation as well as growth mechanism of voids by investigating the growth of voids and their coalescence. Some of them also investigated the voids under compression or shock loading to study the compression process and deformation mechanism of voids [6,7].…”

“…Currently, a large number of experimental studies [14][15][16]12,17] analyzed the mechanism of voids growth and coalescence in qualitative or quantitative methods. Molecular dynamics (MD) is a method which can more thoroughly analyze the micro-mechanisms, and has been preformed for some materials to explore the physical mechanisms of void growth on atomic scales [18][19][20][21][22][23][24][25].…”

Deformation of periodic nanovoid structures in Mg single crystals

“…Prior atomistic studies revealed that the nanovoid growth process is affected by many factors, including, but not limited to, strain rate [9], temperature [10], initial porosity [11], initial void shape [12], and crystallographic orientations [13,14,15]. Compared with face-centered cubic (FCC) [1,10,12] and body-centered cubic (BCC) [9,2,11] systems, there exist much fewer studies of nanvoids in metals with a hexagonal close-packed (HCP) lattice, in part due to a lack of reliable interatomic potential and more complicated slip/twinning systems in the latter.…”

“…Compared with face-centered cubic (FCC) [1,10,12] and body-centered cubic (BCC) [9,2,11] systems, there exist much fewer studies of nanvoids in metals with a hexagonal close-packed (HCP) lattice, in part due to a lack of reliable interatomic potential and more complicated slip/twinning systems in the latter. Particularly for HCP Mg, the lightest and the third most abundant element in the Earth's crust among all metals, most atomistic simulations in the literature concerned nanocracks [16,17,18,19]; to the best of our knowledge, only a few MD and atomistic-based multiscale studies have been devoted to nanovoids [20,21,22].…”