Reference : Microstructural size effects on mechanical properties of high purity nickel
Scientific journals : Article
Engineering, computing & technology : Materials science & engineering
Microstructural size effects on mechanical properties of high purity nickel
Keller, Clément mailto [Université de Liège - ULiège > Département Argenco : Secteur MS2F > Département Argenco : Secteur MS2F >]
Hug, E. [> >]
Feaugas, X. [> >]
International Journal of Plasticity
Pergamon Press - An Imprint of Elsevier Science
Yes (verified by ORBi)
United Kingdom
[en] Mechanical testing ; Transmission electron microscopy (TEM) ; Dislocations ; Strengthening mechanisms ; Metallic materials
[en] The aim of this article is to provide experimental results in order to understand the microstructural size effects which occur with a decrease in the thickness of polycrystalline nickel samples from 3.2 mm to 12.5 lm. The influence of the thickness, grain size and ratio thickness to grain size on the mechanical properties and strain hardening were investigated by mechanical tests and TEM observations. The results show the presence of three different domains of mechanical behaviour: polycrystalline, multicrystalline and quasi-single crystalline depending on the thickness and on the number of grains across the thickness.
The transition between the three domains is due to the occurrence of surface effects involving a decrease in the long-range internal backstress revealed by the TEM observations.
journal homepage:
© 2010 Elsevier Ltd. All rights reserved.

File(s) associated to this reference

Fulltext file(s):

Restricted access
2010_Microstructural size effects on mechanical properties of high purity nickel_IJP.pdfPublisher postprint2.37 MBRequest copy

Bookmark and Share SFX Query

All documents in ORBi are protected by a user license.