|About this Abstract
||2018 TMS Annual Meeting & Exhibition
||Mechanical Behavior at the Nanoscale IV
||Mechanical Properties of Nanocrystalline Aluminum: Atomistic Simulations and Experimental Verification
||Wenwu Xu, Xiaoyan Song, Lilian P. Dávila
|On-Site Speaker (Planned)
Aluminum is lightweight and arguably remains abundant on the earth’s crust. The primary work undertaking is to further strengthen it by tailored design to meet challenges of pollution reduction and efficient transportation. Nanostructuring enables the design of ultra-strong/tunable mechanical properties of aluminum, while its implementation requires comprehensive knowledge of size effects on the deformation process. Classical molecular dynamics allows the study of deformation behavior with atomistic detail. We performed robust atomistic simulations of tensile deformation of nanocrystalline aluminum with a wide range of different mean grain sizes. The simulated mechanical properties at the nanoscale such as Young’s modulus agree well with our experimental measurements on nanocrystalline aluminum prepared via spark plasma sintering. The size dependence of various mechanical properties and associated nanomechanics are revealed. We will provide useful insights in the nanomechanics of nanocrystalline aluminum and facilitate the design and development of high strength nanocrystalline aluminum and aluminum-based alloys.
||Planned: Supplemental Proceedings volume