In:
Applied Mechanics and Materials, Trans Tech Publications, Ltd., Vol. 597 ( 2014-7), p. 135-139
Abstract:
Magnesium (Mg) alloys with 30 weight percentage (wt.%) of yttrium (Y) were gravity cast using copper mold and copper mold with air cooling. The results were benchmarked with Mg-30Y alloys produced using steel mold casting. It was found that the Mg-30Y alloys cast using the copper mold with air cooling exhibited the best mechanical properties, whereby the compression strength and the Vickers hardness value peak at 633 MPa and 137.6 HV respectively. Microstructural observations show that with increasing cooling rate, and hence increasing molten metal solidification rate, the dendrite structures are much finer due to enhanced nucleation rate. This is due to limited time for the dendrites to coarsen.
Type of Medium:
Online Resource
ISSN:
1662-7482
DOI:
10.4028/www.scientific.net/AMM.597
DOI:
10.4028/www.scientific.net/AMM.597.135
Language:
Unknown
Publisher:
Trans Tech Publications, Ltd.
Publication Date:
2014
detail.hit.zdb_id:
2251882-4