Deformed microstructure evolution in AM60B Mg alloy under hypervelocity impact at a velocity of 5kms−1

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

“…Zou and Zhen et al [2][3][4]23] investigated shear bands in AM60B Mg alloys and found that deformed bands are composed of elongated grains having high dislocation density, while transformed bands contain ultrafine, equiaxed grains, similar to adiabatic shear bands in other metals. However, the deformation behavior outside of the shear bands, such as twinning and texture evolution, has not been thoroughly investigated.…”

“…Additionally, the crack passing through a grain into another one might be related to paired twins and twin chains [34]. [2][3][4]23]. Fig.…”

“…Therefore, the deformation and failure mechanisms of Mg alloys under impact loading are receiving increased attention. In-situ analysis of dynamic deformation is limited by current technological capabilities due to the high strain rate and the extremely short impact time involved [2][3][4]. Thus, characterization of the microstructures after dynamic loading is widely used to understand the deformation process because the post-deformation microstructure is M A N U S C R I P T A C C E P T E D ACCEPTED MANUSCRIPT 3 closely related to the dynamic loading process [5].…”

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

“…6, 2010 velocities of 4 and 5 km/s. The deformation twins, ultrafine recrystallined grains as well as dislocations were comprehensively characterized [15,16]. In the present work, a zinc-containing AZ91 magnesium alloy was selected as the target material, and different heat treatment process were performed with the alloy in order to investigate the influence of initial microstructure and mechanical properties on the deformation and damage behaviors of magnesium alloy under high velocity impact.…”

Micro-damage of Tungsten Fiber Reinforced Copper Matrix Composites under Hypervelocity Impact

“…Among current researches on projectiles into concrete targets, penetration velocity was mostly less than 1 km/s, which was low, and at the same time high-strength steels and tungsten alloys were mostly adopted as projectile materials. With the development of kinetic energy projectiles to high speed, high strength and high density, the demand to mechanical properties of materials used for armor-piercing projectiles increases higher and higher, and the traditional high-strength steels and tungsten alloys become increasingly unsuited to the military requirements [1][2][3][4] . Composites are composed of two or more kinds of materials reasonably, so they often possess better performance than a single material.…”