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Influence of particle shape on zener drag
Luleå tekniska universitet.
Luleå tekniska universitet.
1990 (English)In: Acta Metallurgica et Materialia, ISSN 0956-7151, Vol. 39, no 6, p. 1045-1052Article in journal (Refereed) Published
Abstract [en]

Practically all papers concerned with grain refinement based on pinning by particle dispersions have considered spherical particles. This paper avoids this restriction and develops Zener pinning equations for ellipsoidal particles of any shape, orientation and degree of coherency. Theoretical predictions are verified using soap bubble model experiments. It is found that within well defined conditions of particle orientation, disk or needle-shaped particles may offer greater pinning resistance, or Zener drag to migrating boundaries than spherical ones. However, the pinning resistance of non-spherical particles is sensitive to particle orientation. Their use in alloys is best utilised in systems based on mono-orientation dispersions

Place, publisher, year, edition, pages
1990. Vol. 39, no 6, p. 1045-1052
National Category
Other Materials Engineering
Research subject
Engineering Materials
Identifiers
URN: urn:nbn:se:ltu:diva-6611Local ID: 4db7d390-f49c-11db-ac9f-000ea68e967bOAI: oai:DiVA.org:ltu-6611DiVA: diva2:979497
Note

Godkänd; 1990; 20070427 (cira)

Available from: 2016-09-29 Created: 2016-09-29 Last updated: 2018-02-06Bibliographically approved

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