ISSN:
1662-9752
Source:
Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
Notes:
The Mg-8Zn-8Al-4RE (RE = mischmetal, mass%) magnesium alloy was prepared byusing casting method. The microstructure and mechanical properties of as-cast alloy, solid solutionalloy and aged alloy samples have been investigated. Optical microscopy, X-ray diffractometery andscanning electron microscope attached energy spectrometer were used to characterize themicrostructure and phase composition for the alloy. Net shaped τ-Mg32(Al,Zn)49 phase was obtainedat the grain boundary, and needle-like or blocky Al11RE3 phase disperses in grain boundaryand α-Mg matrix. The τ-Mg32(Al,Zn)49 phase disappeared during solution treatment and a new phaseof Al2CeZn2 formed during subsequent age treatment. The mechanical properties were performed byuniversal testing machine at room temperature, 150 ℃ and 200 ℃, separately. The ultimate tensilestrength of as-cast alloy is lower compared to an age treatment alloy at 200 ℃ for 12h. The strengthsdecreased with enhancing test temperature, but elongation has not been effect by age treatment
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/02/16/transtech_doi~10.4028%252Fwww.scientific.net%252FMSF.546-549.187.pdf
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