Journal
JOURNAL OF RARE EARTHS
Volume 28, Issue 5, Pages 790-793Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/S1002-0721(09)60202-7
Keywords
Mg-Sn-Nd alloy; microstructure; mechanical properties; rare earths
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Funding
- Science & Technology Bureau of Sichuan Province of China [03GG009-007-4]
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Microstructure, tensile properties and compressive creep behaviors of Mg-(1.65-11.52) wt.% Sn-2 wt.% Nd alloys were studied in this paper. The microstructure of the as-cast Mg-Sn-Nd alloys consisted of dendritic alpha-Mg, Mg2Sn and Mg-Sn-Nd ternary phase containing rare earth element. The highest ultimate tensile strength of 140 MPa and percentage elongation after fracture of 9.7%, were achieved with a composition of Mg-8.23 wt.% Sn-2 wt.% Nd. The compressive creep resistance of Mg-8.23 wt.% Sn-2 wt.% Nd alloy was much better than other alloys at 200 degrees C for applied load of 35 MPa, which was mainly due to the formation of dispersive heat-resistance Mg2Sn and Mg-Sn-Nd intermetallic compounds.
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