Deformation behaviors of [110] and [112] oriented β-Sn single crystals

Jiangtao Liu, Zhongguang Wang, Jian Ku Shang

Research output: Contribution to journalArticlepeer-review

Abstract

Deformation behaviors of [110] and [112] oriented Sn single crystals were investigated under different temperatures and strain rates. It is shown that there are some differences between [110] and [112] orientations. [110] oriented sample has the higher strain rate sensitivity exponent m≈0.133, strain hardening exponent n≈0.54, activation energy Q≈35 kJ/mol and deforms through multiple-slip. While [112] oriented sample has the lower strain rate sensitivity exponent m≈0.108, lower strain hardening exponent n≈0.46, activation energy Q≈52 kJ/mol and deforms through cross-slip and twins together. The first activated slip system is {010}<100>in [110] orientation. The critical-resolved shear stress (CRSS) is 3.1 MPa which is depended on temperature. Deformation process is controlled by the cross--slip according to the activation energy and slip observation.

Original languageEnglish (US)
Pages (from-to)1409-1414
Number of pages6
JournalJinshu Xuebao/ Acta Metallurgica Sinica
Volume44
Issue number12
StatePublished - Dec 1 2008

Keywords

  • Activation energy
  • Critical-resolved shear stress (CRSS)
  • Cross slip
  • Slip system
  • Sn single crystal
  • Strain hardening exponent
  • Strain rate sensitivity exponent

ASJC Scopus subject areas

  • Geotechnical Engineering and Engineering Geology
  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys

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