Indexed by:会议论文
Date of Publication:2014-07-04
Included Journals:EI、Scopus
Volume:816
Page Number:21-26
Abstract:In this paper, a remelting and diluting (RD) approach was used to fabricate in situ A356-3wt.%TiB2 composites and the effect of Sr and La on the modification of the composites is investigated in comparison with the conventional flux assisted synthesis (FAS) approach. The microstructure was examined and tensile properties were tested to evaluate the modification efficiency on the composites. The results demonstrated that composites fabricated via RD approach achieve preferable modification by Sr and La due to the higher level of melt cleanliness so as to minimize the Sr-B interaction, in which the eutectic Si which displays a microstructure with globular-fibrous eutectic Si particles. Superior mechanical properties are obtained in the RD composites (especially the elongation) after modified by Sr and La. ? (2015) Trans Tech Publications, Switzerland.