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Indexed by:期刊论文

Date of Publication:2008-12-01

Journal:TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA

Included Journals:SCIE、ISTIC、Scopus

Volume:18

Issue:,1

Page Number:S283-S287

ISSN No.:1003-6326

Key Words:electromagnetic suspension casting; microstructure; grain refinement; tensile properties

Abstract:CaC2 particulates reinforced magnesium materials were synthesized using a new technique-electromagnetic suspension casting(ESC). The microstructure and composition of magnesium alloys were investigated and the mechanical properties of alloys were tested. The tensile fracture surfaces were also studied by scanning electron microscopy. And the grain refinement effect of alloys was also examined. The results indicate that proper additions of CaC2 particulates are found to be efficient in refining the microstructure of magnesium materials. The tensile properties of alloys are consistent with the grain sizes. 0.26% (mass fraction) of CaC2 addition reduces the mean grain size of pure magnesium from more than 2 trim to 125 mu m, and the ultimate tensile strength of pure magnesium at room temperature decreases from 77 to 148 MPa.