Strain rate sensitivity studies in an ultrafine-grained Al-30wt.% Zn alloy using micro- and nanoindentation

N. Chinh, Tamás Csanádi, Tivadar Gyori, Ruslan Z. Valiev, Boris B. Straumal, Megumi Kawasaki, Terence G. Langdon

Research output: Contribution to journalArticle

49 Citations (Scopus)

Abstract

The characteristics of plastic deformation of an ultrafine-grained (UFG) Al-30. wt.% Zn alloy were investigated using depth-sensing micro- and nanoindentation. Emphasis was placed on the effects of grain boundaries and the unusually high strain rate sensitivity. It is shown that there is a close relationship between enhanced strain rate sensitivity and ductility in this UFG material and this is associated with grain boundary sliding and enhanced diffusion along the Al/Al grain boundaries which appear to be wetted by Zn-rich layers.

Original languageEnglish
Pages (from-to)117-120
Number of pages4
JournalMaterials Science and Engineering A
Volume543
DOIs
Publication statusPublished - May 1 2012

Fingerprint

Nanoindentation
nanoindentation
microhardness
strain rate
Strain rate
Grain boundaries
grain boundaries
Grain boundary sliding
Ductility
Plastic deformation
ductility
plastic deformation
sliding
Ultrafine

Keywords

  • Grain boundary sliding
  • Micro and nanoindentation
  • Strain rate sensitivity
  • Ultrafine-grained materials
  • Wetted boundaries

ASJC Scopus subject areas

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

Cite this

Strain rate sensitivity studies in an ultrafine-grained Al-30wt.% Zn alloy using micro- and nanoindentation. / Chinh, N.; Csanádi, Tamás; Gyori, Tivadar; Valiev, Ruslan Z.; Straumal, Boris B.; Kawasaki, Megumi; Langdon, Terence G.

In: Materials Science and Engineering A, Vol. 543, 01.05.2012, p. 117-120.

Research output: Contribution to journalArticle

Chinh, N. ; Csanádi, Tamás ; Gyori, Tivadar ; Valiev, Ruslan Z. ; Straumal, Boris B. ; Kawasaki, Megumi ; Langdon, Terence G. / Strain rate sensitivity studies in an ultrafine-grained Al-30wt.% Zn alloy using micro- and nanoindentation. In: Materials Science and Engineering A. 2012 ; Vol. 543. pp. 117-120.
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