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  • Ghassemali, Ehsan, 1983-, et al. (author)
  • Effect of cold-work on the Hall–Petch breakdown in copper based micro-components
  • 2015
  • In: Mechanics of materials. - : Elsevier. - 0167-6636 .- 1872-7743. ; 80, part A, s. 124-135
  • Journal article (peer-reviewed)abstract
    • Effects of substructural dimensions on the mechanical properties of micro-pins produced by an open-die micro-extrusion/forging process were studied. Micro-pins of diameter 0.3 mm were manufactured from copper strips, having different initial grain sizes. Micro-compression tests on the micro-pins revealed no significant size effect, even if the number of grains over the diameter of the micro-pins falls below its critical value. However, relaxation of the as-formed substructure using recovery annealing led to a surprising drop in the flow stress of the micro-pins. This was explained and attributed to the number of subgrains over the diameter of the micro-pins, showing the important role of subgrains rather than grains in determining the mechanical properties.
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  • Result 1-1 of 1
Type of publication
journal article (1)
Type of content
peer-reviewed (1)
Author/Editor
Ghassemali, Ehsan, 1 ... (1)
Jarfors, Anders E. W ... (1)
Lim, S.C.V. (1)
Tan, Ming-Jen Tan (1)
Wahb, Chua Beng (1)
University
Jönköping University (1)
Language
English (1)
Research subject (UKÄ/SCB)
Engineering and Technology (1)
Year
2015 (1)

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