|About this Abstract
||2017 TMS Annual Meeting & Exhibition
||Fundamental Aspects and Modeling Powder Metal Synthesis and Processing
||Mesoscale Modeling of Single Particle Impact Induced Microstructural Evolution during Cold Spray of Aluminum Powders
||Sumit A Suresh, Benjamin Bedard, Tyler Flanagan, Seok-Woo Lee, Mark Aindow, Harold Brody, Xuemei Wang, Victor Champagne,
|On-Site Speaker (Planned)
||Sumit A Suresh
The cold spray process involves acceleration of metal particles at supersonic velocities on to a metal substrate for applications in coatings, repair and manufacturing technologies. A critical challenge in optimizing the applicability of the cold spray process is the understanding of the deformation behavior during particle impact. Mesoscale simulations are therefore carried out to investigate the microstructural evolution during impact of Al particles with sizes up to tens of microns on to a metal substrate using a newly developed quasi-coarse-grained dynamics (QCGD) method. The QCGD method is based on solving the equations of motion for a chosen set of representative atoms from an atomistic microstructure and retaining their energetics using scaling relationships for the atomic scale interatomic potentials as would be used in MD simulations. The scaling relationships, and the effect of particle size, temperature of the particle and impact velocity on the predicted microstructural evolution will be presented.