Study of deformed microstructures near the impact crater in pure copper targets

Twinning behavior and lattice rotation in a Mg–Gd–Y–Zr alloy under ballistic impact

“…Materials used in these applications must withstand shock loading and dynamic loading from sources such as micrometeoroid impact and armor penetration [1]. Therefore, the deformation and failure mechanisms of Mg alloys under impact loading are receiving increased attention.…”

“…Analysis of phenomena such as dislocation slip, deformation twinning, recrystallization, phase transformation, amorphization, and micro-hardness evolution, is available in the literature for steel [6][7][8][9][10], copper [1,[11][12][13], aluminum alloys [13][14][15][16], and titanium alloys [17][18][19][20][21][22].…”

Formation and evolution of shear bands in Zr40Ti60 alloy impacted by Hopkinson bar

“…This localised deformation caused by shear localisation at high strain rates has been observed in many metals, such as steels, [1][2][3][4] light metals [5][6][7][8] and Ti alloys. [9][10][11][12][13] These extreme heterogeneous deformations at high strain rates result in high temperatures within the shear band, which cause thermal plastic instabilities in the materials. Materials can even be melted within the shear bands at high temperatures.…”

Deformed Microstructure of AZ91 Magnesium Alloy Impacted by Projectiles with Velocities of 2-3 km/s

“…For example, the crater formation process and microstructure changes near the crater in steel targets under high velocity impact have been investigated [5][6][7][8], and ASBs and phase tranformation induced by dynamic deformation were found. Meanwhile, the impact cratering and crater-related microstructures in copper targets have been studied, and microbands and linear microstructure are the dominant feature [9][10][11]. ASBs in Al alloy and its composite induced by high velocity impact have been studied [12,13], and the deformation localization and dynamic rrecrystallization in Ti alloys targets have been investigated [4,14].…”