ISSN:
1662-9779
Source:
Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
Topics:
Physics
Notes:
We have developed new type semi-solid injection process, that is, runner-less injectionprocess which can obtain high material yield of about 90% for magnesium alloy. In this process,alloy billets are heated to the semi-solid temperature in the injection cylinder and are injected into apermanent mold. In order to investigate the effects of volume fraction solid and injection speed onmicrostructure and mechanical properties of AZ91D magnesium alloy injected into the permanentmold, semi-solid forming testing machine which has the same system as a runner-less injectionmachine, has been made on an experimental basis. The magnesium billet precisely controlled atgiven temperature has been injected into a permanent mold with two kinds (slow and high) of speedand plate-like specimens with each fraction solid have been fabricated. Microstructure has beenobserved by optical microscopy and X-ray computerized tomography (CT) scanner. Mechanicalproperties have been measured by tensile test. The effects of volume fraction solid of the alloyslurry and injection speed on mechanical properties have been clarified
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/02/24/transtech_doi~10.4028%252Fwww.scientific.net%252FSSP.141-143.761.pdf
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