Paper Title:
Mechanical Properties and Creep Behavior of Mg–Al–Ca Alloys
  Abstract

This paper investigates the microstructure, mechanical properties and creep behavior of Mg–Al–Ca alloys with different Ca content. SEM and EDAX analyses show that the dominant second phase in the as-cast Mg–Al–Ca alloys is Al2Ca, which distributes at the grain boundaries and disperses in the grain interior as well. Both the elevated tensile strength and the creep resistance of Mg–Al–Ca alloys obviously increased with increasing Ca at high temperature. TEM analyses reveal that finer Al2Ca particles with an average size of 0.02 µm precipitated dynamically during the creep process. Selected area electron diffraction (SAD) patterns show that the dynamic Al2Ca precipitates have a coherent interface with matrix as (0110) Mg // (220) Al2Ca, [2110] Mg // [112] Al2Ca. The strengthening mechanism of Mg–Al–Ca alloys at elevated temperature was discussed.

  Info
Periodical
Materials Science Forum (Volumes 488-489)
Edited by
W.Ke, E.H.Han, Y.F.Han, K.Kainer and A.A.Luo
Pages
763-766
DOI
10.4028/www.scientific.net/MSF.488-489.763
Citation
M. P. Liu, Q. D. Wang, X. Q. Zeng, G. Y. Yuan, Y. P. Zhu, W. J. Ding, "Mechanical Properties and Creep Behavior of Mg–Al–Ca Alloys", Materials Science Forum, Vols. 488-489, pp. 763-766, 2005
Online since
July 2005
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Price
$32.00
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