Microstructure and Mechanical Properties of Mg-12Gd-2Y-Sm-0.5Zr Alloy

Abstract:

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The Mg-12Gd-2Y-Sm-0.5Zr (wt. %) alloy was prepared by casting technology and the microstructure and mechanical properties of the alloy have been investigated. It was found that the alloy was composed of a-Mg matrix, Mg5Gd phase and dispersed long-period ordered β' precipitates. With temperature increasing from 20 to 300 °C, the tensile strength increased and reached to the maximum strength at 300°C, namely 316.3 MPa. The value was superior to those of the conventional heat-resistant magnesium. The improved strain hardening and critical crack propagation stress were the key factors for experimental alloy possessed anomalous temperature dependence of tensile strength.

Info:

Periodical:

Advanced Materials Research (Volumes 168-170)

Edited by:

Lijuan Li

Pages:

1001-1005

DOI:

10.4028/www.scientific.net/AMR.168-170.1001

Citation:

K. J. Li and Q. N. Li, "Microstructure and Mechanical Properties of Mg-12Gd-2Y-Sm-0.5Zr Alloy", Advanced Materials Research, Vols. 168-170, pp. 1001-1005, 2011

Online since:

December 2010

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$35.00

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