Anomalies in Hall-Petch strengthening for nanocrystalline Au-Cu alloys below 10 nm grain size Conference Paper

abstract

• The mechanical behavior of an electrodeposited nanocrystalline alloy is assessed with regards to the experimentally measured strain-rate sensitivity. Foils are characterized with grain sizes as small as 3. nm, a nano-scale regime that has previously gone without detailed experimental examination. It is found from micro-scratch measurements that hardness, hence strength, approaches ideal values as the grain size decreases to 7. nm. Below 7. nm, softening in strength and departure from Hall-Petch behavior is related to an increase in the activation volume for deformation as grain size decreases further. 2010 Elsevier B.V.

authors

• Nyakiti, Luke

published proceedings

• SURFACE & COATINGS TECHNOLOGY

author list (cited authors)

• Jankowski, A. F., & Nyakiti, L. O.

citation count

• 4

complete list of authors

• Jankowski, Alan F||Nyakiti, Luke O

publication date

• January 2010

publisher

• Elsevier  Publisher

published in

• Surface and Coatings Technology  Journal

keywords

• Nanocrystalline
• Nanohardness
• Strain-rate Sensitivity

Digital Object Identifier (DOI)

• 10.1016/j.surfcoat.2010.07.106

start page

• 1398

end page

• 1402

volume

• 205

issue

• 5

URL

• http://dx.doi.org/10.1016/j.surfcoat.2010.07.106