Author/Authors :
Z. H. Gu، نويسنده , , H. Y. Wang، نويسنده , , and N. Zheng، نويسنده , , M. Zha، نويسنده , ,
L. L. Jiang، نويسنده , , W. Wang، نويسنده , , Q. C. JIANG، نويسنده ,
Abstract :
The effect of melt superheating treatment on
the microstructure of Mg–1.5Si–1Zn alloy is investigated
in this article. The microstructure of samples poured into
sand and metal molds shows that the primary Mg2Si is
considerably refined in size when the melt is superheated
from 750 to 900 C. However, its polyhedral morphology
does not change. In addition, also the size of eutectic
Mg2Si phase obviously decreases, but the morphology still
exhibits Chinese script type. Meanwhile, it is concluded
that the reduction of the heredity plays an important role in
the grain refinement of Mg–1.5Si–1Zn alloy
