Change search
ReferencesLink to record
Permanent link

Direct link
Steady non-Newtonian flows in copper and iron aluminide at elevated temperatures
KTH, School of Industrial Engineering and Management (ITM), Materials Science and Engineering, Materials Technology.
KTH, School of Industrial Engineering and Management (ITM), Materials Science and Engineering, Materials Technology.ORCID iD: 0000-0002-8494-3983
2007 (English)In: Journal of Materials Processing Technology, ISSN 0924-0136, Vol. 189, no 1-3, 428-434 p.Article in journal (Refereed) Published
Abstract [en]

On the basis of dislocation climb and mobility, a steady-state non-Newtonian flow law is derived for two metallic and one intermetallic material,namely electrolytic tough pitch copper, phosphorus alloyed pure copper, and Fe24AlMo iron aluminide. The purpose is to develop a flow lawapplicable to the finite element simulation for hydrodynamic flow of incompressible metals. The model can accurately represent the experimentalflow stress values and the viscosity of the materials. The mathematical form of the model is similar to that of the free-volume approach, which isused for liquids and amorphous metals. The study indicates that in the temperature and strain-rate regimes that are appropriate to the hot-workingprocesses, the Cohen–Grest model, which is essentially related to the total thermal expansion of fluid, can phenomenologically be extended to thecrystalline solid-state materials for the depiction of viscosity data.

Place, publisher, year, edition, pages
Elsevier B.V. , 2007. Vol. 189, no 1-3, 428-434 p.
Keyword [en]
Copper; Iron aluminides; Shear rate; Steady non-Newtonian flow; Shear-thinning fluid; Viscosity
National Category
Other Materials Engineering
URN: urn:nbn:se:kth:diva-48148DOI: 10.1016/j.jmatprotec.2007.02.024ISI: 000246326700057ScopusID: 2-s2.0-34047142231OAI: diva2:456880
QC 20111123Available from: 2011-11-16 Created: 2011-11-16 Last updated: 2011-11-23Bibliographically approved

Open Access in DiVA

No full text

Other links

Publisher's full textScopus

Search in DiVA

By author/editor
Jin, Lai-ZheSandström, Rolf
By organisation
Materials Technology
In the same journal
Journal of Materials Processing Technology
Other Materials Engineering

Search outside of DiVA

GoogleGoogle Scholar
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

Altmetric score

Total: 29 hits
ReferencesLink to record
Permanent link

Direct link