Study of dislocations in copper by weak beam, stereo, and in situ straining TEM

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Conventional transmission electron microscopy (TEM) has been an invaluable tool for verifjhg and developing dislocation theories since the first direct observations of dislocations were made using a TEM in the 1950s. Several useful techniques and technological advancements have been made since, helping fbrther the advancement of dislocation knowledge. The present paper concerns two studies of dislocations in copper made by coupling several of these techniques, specifically weak beam, in situ straining, and stereo TEM. Stereo-TEM coupled with in situ straining TEM was used for tracking 3D dislocation motion and interactions in low dislocation density copper foils. A mechanism by which ... continued below

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6 p.

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McCabe, R. J. (Rodney J.); Misra, A. (Amit) & Mitchell, T. E. (Terence E.) January 1, 2002.

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Description

Conventional transmission electron microscopy (TEM) has been an invaluable tool for verifjhg and developing dislocation theories since the first direct observations of dislocations were made using a TEM in the 1950s. Several useful techniques and technological advancements have been made since, helping fbrther the advancement of dislocation knowledge. The present paper concerns two studies of dislocations in copper made by coupling several of these techniques, specifically weak beam, in situ straining, and stereo TEM. Stereo-TEM coupled with in situ straining TEM was used for tracking 3D dislocation motion and interactions in low dislocation density copper foils. A mechanism by which dislocations in a pileup bypass a dislocation node is observed and discussed. Weak beam TEM is used in conjunction with stereo-TEM to analyze the dislocation content of a dense dislocation wall (DDW).

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6 p.

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  • Submitted to: Proceedings of the Mike Meshii Symposium on Electron Microscopy: Its Role in Materials Research, 2003 TMS Annual Meeting, San Diego, CA, March 2-6, 2003

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  • Report No.: LA-UR-02-6552
  • Grant Number: none
  • Office of Scientific & Technical Information Report Number: 976398
  • Archival Resource Key: ark:/67531/metadc932000

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  • January 1, 2002

Added to The UNT Digital Library

  • Nov. 13, 2016, 7:26 p.m.

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  • Dec. 12, 2016, 6:41 p.m.

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McCabe, R. J. (Rodney J.); Misra, A. (Amit) & Mitchell, T. E. (Terence E.). Study of dislocations in copper by weak beam, stereo, and in situ straining TEM, article, January 1, 2002; United States. (digital.library.unt.edu/ark:/67531/metadc932000/: accessed November 12, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.