Reddy, C. D., Zhang, Z.-Q., Msolli, S., Guo, J., & Sridhar, N. (2021). Impact induced metallurgical and mechanical interlocking in metals. Computational Materials Science, 192, 110363. doi:10.1016/j.commatsci.2021.110363
In spite of many experimental and modeling studies reported in the literature, a fundamental understanding of the bonding mechanisms for a supersonic metal particle impinging onto a metal substrate is still an open problem. We show here with molecular dynamics simulations for copper/copper system, impact induced local melting leading to adhesive bonding at the interface. More importantly, we identify the bonding mechanisms as a combination of metallurgical, mechanical and grain boundary interlocking at the interface region. The formation of metallurgical interlocking has heretofore never been reported in the literature. Nanotwins and grain refinement in the particle are also very pervasive.
Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0)
This research / project is supported by the A*STAR - Machining Learning Assisted Control of Metal Cold Spray and Shot Peening Processes
Grant Reference no. : A1894a0032
Please find the link to the article at the publisher's URL: http://dx.doi.org/10.1016/j.commatsci.2021.110363