Scientists are smashing metallic micro-cubes to make them ultrastrong and tough by rearranging their nanostructures upon impact. The team reports that firing a tiny, nearly perfect cube of silver onto a hard target turns its single-crystal microstructure into a gradient-nano-grained (GNG) structure.
from Engineering and Construction News – ScienceDaily https://www.sciencedaily.com/releases/2016/10/161020143651.htm
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