ISSN:
1662-8985
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:
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
Type of Medium:
Electronic Resource
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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