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An international team of researchers has invented a method to control the formation of defects called "shear bands" in metals manufacturing processes and discovered microscopic details of how the defects are created. Shear banding occurs often in high-speed machining of structural metals. It has been a longstanding problem in manufacturing processes because it hinders production of good quality surfaces while machining advanced metal alloys like titanium, nickel and high-temperature aerospace materials, and in the production of metal sheets and foils.
Image credit: Purdue University/Center for Materials Processing and Tribology
