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Strengthening mechanisms in solid solution aluminum alloys
KTH, School of Engineering Sciences (SCI), Physics.
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2006 (English)In: Metallurgical and Materials Transactions. A, ISSN 1073-5623, E-ISSN 1543-1940, Vol. 37A, no 6, 1999-2006 p.Article in journal (Refereed) Published
Abstract [en]

A number of commercial and high-purity non-heat-treatable aluminum alloys are investigated in this work. It is found that both magnesium and manganese in solid solution give a nearly linear concentration dependence of the strength at a given strain for commercial alloys. This deviates from high-purity AlMg binary alloys, where a parabolic concentration dependence is found. Mn in solid solution is found to give a considerably higher strengthening effect per atom than Mg, both in terms of yield stress and initial work hardening rate. This strengthening effect is stronger comparing commercial grades to high-purity alloys. This enhanced strengthening is believed to be a synergy or clustering effect caused by interaction between Mn atoms and trace elements, probably silicon, in solid solution.

Place, publisher, year, edition, pages
2006. Vol. 37A, no 6, 1999-2006 p.
National Category
Metallurgy and Metallic Materials
URN: urn:nbn:se:kth:diva-37605DOI: 10.1007/s11661-006-0142-7ISI: 000238020000031ScopusID: 2-s2.0-33745280914OAI: diva2:434449
Available from: 2011-08-15 Created: 2011-08-15 Last updated: 2011-08-15Bibliographically approved

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Sjölander, Emma
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