Direct visualization of metals --metal atoms during shear deformation has applications from batteries to lightweight vehicles
manufacturing, metals are processed using shear forces to produce high-performance metal alloys for use in vehicles and other applications.
PNNL researchers visualized how atoms are rearranged during shear deformation by taking an extreme close-up look at a gold nano-crystal. In this video, each row of atoms is moved in a specific way during shear deformation, generating specific structures that determine the material’s properties. Physical forces are universal.
When researchers watched gold undergoing shear, they saw that crystals of gold were divided into smaller grains. They noticed that natural defects in the arrangement of gold atoms changed how shear deformation moved the atoms. This is useful information because defects are common in metals during deformation, but don’t behave the same in all metals—which can directly affect metal properties.
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