Failure Mechanisms and Scaling Laws of Nanoporous Aluminum: A Computational Study1 . Issue 4 (7th October 2015)

• Record Type: Journal Article
• Authors: Winter, Nicholas; Becton, Matthew; Zhang, Liuyang; Wang, Xianqiao
• Is Part Of: Advanced engineering materials. Volume 18:Issue 4(2016:Apr.)
• Page Start: 632
• Page End: 642
• Publication Date: 2015-10-07
• Subjects: Materials -- Periodicals; 620.11
• DOI: 10.1002/adem.201500315
• Languages: English
• ISSNs: 1438-1656

Abstract

Abstract : Recent nanomechanical experiments and simulations reveal a ligament size‐dependent effect on the strength of nanowires, nanocolumns, and nanofoams. Here, we show the failure mechanism and scaling laws of nanoporous aluminum (np‐Al) using a molecular dynamics case study. We develop scaling laws for Young's modulus, yield strength, ultimate strength, and toughness with respect to relative density and ligament diameter for np‐Al. Our findings offer useful insights into the knowledge of nanoporous metals' mechanical properties in order to support material scientists' intention of developing fully comprehensive scaling laws for nanoporous metals. Abstract : An all‐atom computational study of the mode of failure and the effects of ligand size and relative density on nanoporous aluminum's mechanical properties including Young's modulus, yield strength, ultimate strength, and toughness has been presented in this paper.