Primary Creep of Die-Cast Magnesium–Rare Earth Based Alloys

Primary Creep of Die-Cast Magnesium–Rare Earth Based Alloys

The creep response of die-cast Mg-2.5RE-0.6Zn (wt pct) alloys with different rare earth (RE) mixtures has been investigated at 177 °C. The Nd-rich alloy displayed significantly lower primary creep than its La-rich counterpart. Microstructural analyses revealed the formation of additional Nd-containi...

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Veröffentlicht in:Metallurgical and materials transactions. A, Physical metallurgy and materials science Physical metallurgy and materials science, 2009-09, Vol.40 (9), p.2036-2041
Hauptverfasser: Zhu, S.M., Gibson, M.A., Nie, J.F., Easton, M.A., Dunlop, G.L.
Format: Artikel
Sprache:eng
Schlagworte:
Alloys
Applied sciences
Automobile industry
Characterization and Evaluation of Materials
Chemistry and Materials Science
Communication
Creep
Exact sciences and technology
Grain boundaries
Materials Science
Mechanical properties and methods of testing. Rheology. Fracture mechanics. Tribology
Metallic Materials
Metallurgy
Metals. Metallurgy
Nanotechnology
Precipitation hardening
Solid solutions
Structural Materials
Surfaces and Interfaces
Thin Films
Transmission electron microscopy
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Zusammenfassung:The creep response of die-cast Mg-2.5RE-0.6Zn (wt pct) alloys with different rare earth (RE) mixtures has been investigated at 177 °C. The Nd-rich alloy displayed significantly lower primary creep than its La-rich counterpart. Microstructural analyses revealed the formation of additional Nd-containing precipitates on dislocations in the Nd-rich alloy during creep. The degree of supersaturation of RE solutes in the α -Mg matrix after die casting is suggested to be the key factor in influencing primary creep.
ISSN:1073-5623
1543-1940
DOI:10.1007/s11661-009-9896-z