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  In situ TEM straining of single crystal Au films on polyimide: Change of deformation mechanisms at the nanoscale

Oh, S. H., Legros, M., Kiener, D., Gruber, P. A., & Dehm, G. (2007). In situ TEM straining of single crystal Au films on polyimide: Change of deformation mechanisms at the nanoscale. Acta Materialia, 55(16), 5558-5571. doi:10.1016/j.actamat.2007.06.01.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-0024-51FD-A Version Permalink: http://hdl.handle.net/11858/00-001M-0000-0024-51FE-8
Genre: Journal Article

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 Creators:
Oh, Sang Ho1, Author              
Legros, Marc2, Author              
Kiener, Daniel3, Author              
Gruber, Patric Alfons4, Author              
Dehm, Gerhard5, Author              
Affiliations:
1Erich Schmid Institute of Materials Science, Austrian Academy of Sciences, Department Materials Physics, Montanuniversität Leoben, Jahnstrasse. 12, 8700 Leoben, Austria, ou_persistent22              
2CEMES-CNRS, 29 rue J. Marvig, 31055 Toulouse, France, ou_persistent22              
3Erich Schmid Institute of Materials Science, Austrian Academy of Sciences, Austria, ou_persistent22              
4CEMES-CNRS, 29 rue Jeanne Marvig, 31055 Toulouse, France, ou_persistent22              
5Erich Schmid Institute of Material Science, Austrian Academy of Sciences, Leoben, Austria, ou_persistent22              

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 Abstract: In situ transmission electron microscopy straining experiments were performed on 40, 60, 80 and 160 nm thick single crystalline Au films on polyimide substrates. A transition in deformation mechanisms was observed with decreasing film thickness: the 160 nm thick film deforms predominantly by perfect dislocations while thinner films deform mainly by partial dislocations separated by stacking faults. In contrast to the 160 nm thick film, interfacial dislocation segments are rarely laid down by threading dislocations for the thinner films. At the late stages of deformation in the thicker Au films prior to fracture, dislocations start to glide on the (001) planes (cube-glide) near the interface with the polymer substrate. The impact of size-dependent dislocation mechanisms on thin film plasticity is addressed.

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Language(s): eng - English
 Dates: 2007-09
 Publication Status: Published in print
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Method: -
 Identifiers: DOI: 10.1016/j.actamat.2007.06.01
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Title: Acta Materialia
  Abbreviation : Acta Mater.
Source Genre: Journal
 Creator(s):
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Publ. Info: Tarrytown, NY : Pergamon
Pages: - Volume / Issue: 55 (16) Sequence Number: - Start / End Page: 5558 - 5571 Identifier: ISSN: 1359-6454
CoNE: https://pure.mpg.de/cone/journals/resource/954928603100