ISSN:
1662-9752
Source:
Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
Notes:
Scandium additions are known to offer a number of benefits to aluminium alloyperformance. Many of these benefits can be attributed to the precipitation of fine Al3Sc particles.These particles are fully coherent with the aluminium matrix when they are small, but can losecoherency as they grow or coarsen. In this work, the change in coherency has been studied in an Al-0.12 wt%Sc alloy over the temperature range 300-425oC. Three coherency regimes were identified,consistent with previous observations. The time and temperature range over which coherencychanges occur have been measured for a range of conditions and correlated with the precipitationkinetics and the predictions of a model for Al3Sc precipitation. The effect of the coherency changeon the particle morphology has also been investigated
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/02/13/transtech_doi~10.4028%252Fwww.scientific.net%252FMSF.519-521.473.pdf
