Electronic Resource
s.l. ; Stafa-Zurich, Switzerland
Solid state phenomena
Vol. 116-117 (Oct. 2006), p. 140-144
ISSN:
1662-9779
Source:
Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
Topics:
Physics
Notes:
Transmission electron microscopy (TEM) was used to assess the microstructural changesaccompanying semisolid molding of a creep resistant Mg-5%Al-2%Sr alloy. It was revealed that theprocessing created thixotropic morphologies with globular solids of α-Mg, having well-developedsub-structures. The quickly-solidified liquid fraction, enriched in Al and Sr, led to the formation ofincreased volumes of a lamellae type Al4Sr phase, surrounding the secondary α-Mg. Traces ofMg17Al12 still existed, predominantly as irregular shape compounds located mainly in graininteriors. Both the primary solid and high melting point precipitates of Mn-Al modified with Sr,acted as nucleation substrates for secondary α-Mg grains
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/02/22/transtech_doi~10.4028%252Fwww.scientific.net%252FSSP.116-117.140.pdf
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