RESISTIVITY CHANGES DUE TO PRECIPITATION EFFECTS IN FIBER-REINFORCED MG AL-ZN-MN ALLOY

Authors
KIEHN J KAINER KU VOSTRY P STULIKOVA I
Citation
J. Kiehn et al., RESISTIVITY CHANGES DUE TO PRECIPITATION EFFECTS IN FIBER-REINFORCED MG AL-ZN-MN ALLOY, Physica status solidi. a, Applied research, 161(1), 1997, pp. 85-95
Citations number
18
Categorie Soggetti
Physics, Condensed Matter
Journal title
Physica status solidi. a, Applied research → ACNP
ISSN journal
00318965
Volume
161
Issue
1
Year of publication
1997
Pages
85 - 95
Database
ISI
SICI code
0031-8965(1997)161:1<85:RCDTPE>2.0.ZU;2-0
Abstract
The change of electrical properties of alumina short fibre reinforced Mg-Al-Zn-Mn alloy AZ91D during isochronal annealing up to 300 degrees C is discussed. The Saffil(R) fibres were incorporated into the magnes ium alloy by direct squeeze casting. The fibre distribution is random planar parallel to the flat faces of the de four-point resistivity spe cimens machined from the solution treated castings. A sharp drop of re sistivity between 140 and 260 degrees C is explained by the formation of incoherent beta-phase particles. Some practical recommendations con cerning the use of alumina short fibre reinforced AZ91 alloy are made on the basis of the results obtained.