Impact of crystalline–amorphous interface on shock response of metallic glass Al90Sm10/crystalline Al nanolaminates

Mishra, Srishti; Reddy, K. Vijay; Pal, Snehanshu

doi:10.1007/s00339-021-04929-4

Cited by 8 publications

(1 citation statement)

References 48 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Owing to the absence of long-range orders in their atomic structure, metallic glasses (MGs) exhibit fascinating mechanical properties such as high elastic limit, superior strength, and good self-sharpening [1][2][3][4]. Recently, MGs have been also identi ed as the promising materials for high-velocity impact applications, in which their shock responses grew in considerable importance [5][6][7][8][9]. For instance, Wen et al [10] reported that the CuZr MGs demonstrates an overdriven plastic state rather than a single elastic shock wave with the piston velocity increasing.…”

Section: Introductionmentioning

confidence: 99%

The Effects of Temperature and Impact Velocity on the Shock Wave Response of Pore-Embedded Metallic Glasses

Patra

Abdulhadi

Fahim³

et al. 2022

Advances in Materials Science and Engineering

View full text Add to dashboard Cite

In this work, the shock wave response of a pore-embedded CuZr metallic glass (PEMG) under different impact velocities (0.5–1.5 km/s) and initial temperatures (300–600 K) was evaluated through the molecular dynamics (MD) simulation. The results indicated that the nucleation and growth of nanoscale shear events around the pore were the dominant mechanisms for plastic deformation under the shock wave. It was also found that the increase in the impact velocity led to the filling of pore, which was due to the structural softening and the local temperature increment in the vicinity of pore. Moreover, the spall event originated from the formation and coalescence of tension transformation zones, leading to the formation of nanovoids in the system. At higher velocities, the spallation was accompanied with the formation of more nanovoids with smaller sizes, inducing the brittle failure in the system. The MD outcomes also showed that the increase in initial temperature decreased the shock pressure and flow shear stress and led to the smoother spallation in the PEMG.

show abstract