ISSN:
1662-8985
Quelle:
Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
Thema:
Maschinenbau
Notizen:
Isothermal grain coarsening of AlCu5MnCdVA aluminum alloy prepared by permanentmould casting during semi-solid treatment process was studied. It was found that the relationshipbetween the average diameter of α (Al) grains and the isothermal holding time fitted the formular − r = K ⋅ t− −'303, where the coarsening rate K’ varied with the holding temperature, which equaled to4.288×10-10m3/s and 5.962×10-10m3/s at the holding temperature. A modified model of liquid filmmigration has been proposed for explaining of 622°C and 631°C respectively the coarsening ratevariation with annealing temperature. The diffusion of the solutes as well as vacancies, and the grainboundary tension are responsible for the microstructure evolution of AlCu5MnCdVA cast alloy
Materialart:
Digitale Medien
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/01/40/transtech_doi~10.4028%252Fwww.scientific.net%252FAMR.26-28.489.pdf
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