Deformation and fracture in micro-tensile tests of freestanding electrodeposited nickel thin films

Y. Yang, N. Yao, W. O. Soboyejo, C. Tarquinio

Research output: Contribution to journalArticle

16 Scopus citations

Abstract

In situ scanning electron microscopy micro-tensile tests were conducted on freestanding LIGA nickel thin films of two thicknesses (70 and 270 μm). The deformation and fracture mechanisms were elucidated by in situ scanning electron microscopy imaging and ex situ fractographic analysis. Due to the film microstructural gradient, an apparent thickness effect on the film yield strengths was observed, which was then rationalized with a continuum micromechanics model.

Original languageEnglish (US)
Pages (from-to)1062-1065
Number of pages4
JournalScripta Materialia
Volume58
Issue number12
DOIs
StatePublished - Jun 2008

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys

Keywords

  • LIGA
  • Micromechanical modeling
  • Nickel
  • Tension test
  • Thin films

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