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Precipitate and Age Hardening Response of As-Cast Mg-8Yb-0.5Zr Magnesium Alloy

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Abstract:

The precipitation hardening response of as-cast Mg-8Yb-0.5Zr magnesium alloy was investigated in the present work. The microstructure evolution of the alloy illustrated that Mg2Yb intermetallic phase was dissolved by solution heat treatment at 520°C for 12 hours. An apparent precipitation hardening response in Mg-8Yb-0.5Zr was discovered after artificial aging at 150°C, with maximum hardness increment of about 80 percent at the peak condition. It was found that the precipitates of the alloy were in the shape of two conjoined cosh and globe about 50 nm, and precipitated preferentially on grain boundaries and dislocations.

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Periodical:

Advanced Materials Research (Volumes 399-401)

Pages:

17-20

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.399-401.17

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Cite this paper

Online since:

November 2011

Authors:

Wen Bin Yu, Zhi Qian Chen, Mang Zhang, Zhou Yu

Keywords:

Heat Treatment, Magnesium Alloy, Precipitation, Ytterbium

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© 2012 Trans Tech Publications Ltd. All Rights Reserved

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