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Grain Boundary Responses to Local and Applied Stress: An In Situ TEM Deformation Study

  • Bryan Miller (a1), Jamey Fenske (a1), Dong Su (a1), Chung-Ming Li (a1), Lisa Dougherty (a1) and Ian M. Robertson (a2)...

Abstract

Deformation experiments at temperatures between 300 and 750 K have been performed in situ in the transmission electron microscope to investigate dislocation interactions and reactions with grain boundaries and other obstacles. Dislocations, both partial and perfect, as well as deformation twins have been observed being emitted from grain boundaries and, in some cases, even the same grain boundary. The ejection of dislocations from the grain boundary can result in its partial or total annihilation. In the latter case, the disintegration of the grain boundary was accompanied by grain growth and a change in misorientation.

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Keywords

Grain Boundary Responses to Local and Applied Stress: An In Situ TEM Deformation Study

  • Bryan Miller (a1), Jamey Fenske (a1), Dong Su (a1), Chung-Ming Li (a1), Lisa Dougherty (a1) and Ian M. Robertson (a2)...

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