Abstract

Impact-induced erosion is the ablation of matter caused by being physically struck by another object. While this phenomenon is known, it is empirically challenging to study mechanistically because of the short timescales and small length scales involved. Here, we resolve supersonic impact erosion in situ with micrometer- and nanosecond-level spatiotemporal resolution. We show, in real time, how metallic microparticles (~10-μm) cross from the regimes of rebound and bonding to the more extreme regime that involves erosion. We find that erosion in normal impact of ductile metallic materials is melt-driven, and establish a mechanistic framework to predict the erosion velocity.

Details

Title
Melt-driven erosion in microparticle impact
Author
Hassani-Gangaraj, Mostafa 1   VIAFID ORCID Logo  ; Veysset, David 2   VIAFID ORCID Logo  ; Nelson, Keith A 3   VIAFID ORCID Logo  ; Schuh, Christopher A 1   VIAFID ORCID Logo 

1  Department of Materials Science and Engineering, MIT, Cambridge, MA, USA 
2  Institute for Soldier Nanotechnologies, MIT, Cambridge, MA, USA 
3  Institute for Soldier Nanotechnologies, MIT, Cambridge, MA, USA; Department of Chemistry, MIT, Cambridge, MA, USA 
Pages
1-7
Publication year
2018
Publication date
Nov 2018
Publisher
Nature Publishing Group
e-ISSN
20411723
Source type
Scholarly Journal
Language of publication
English
DOI
https://doi.org/10.1038/s41467-018-07509-y
ProQuest document ID
2139580356
Copyright
© 2018. This work is published under http://creativecommons.org/licenses/by/4.0/ (the “License”). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License.