Digitale Medien
s.l. ; Stafa-Zurich, Switzerland
Advanced materials research
Vol. 51 (June 2008), p. 85-92
ISSN:
1662-8985
Quelle:
Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
Thema:
Maschinenbau
Notizen:
In this investigation, experiments were carried out to study the relationship ofsolidification parameters and the secondary dendrite arm spacing (SDAS) in A357 alloy casting withvarious thicknesses under the same solidification condition. The results show that the cooling ratedecreases as the thickness of specimens increases, the local solidification time increased, and SDASincreased. The relationships between the SDAS and cooling rate and local solidification time underthe condition of furan resin self-hardening sand casting were obtained: SDAS = 20.8 tf 0.3, SDAS =69.34 v -0.3. The mechanical properties have some linear relations with SDAS of A357 alloy afteraging heat treatment. The correlations can be expressed: UTS=410.4-0.8SDAS andEl%=7.9-0.05SDAS
Materialart:
Digitale Medien
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/01/41/transtech_doi~10.4028%252Fwww.scientific.net%252FAMR.51.85.pdf
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