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 cold-compressed AZ31 magnesium alloys with different (2.5%, 5%, 7.5%, 10%,12.5% and 15%) were annealed at different temperatures (573, 623 and 673K) for different time. Withaid of the optical microscopy, and microhardness tester, the microstructural evolution duringannealing at different temperature of the compressed AZ31 has been investigated. Themicrostructural characterized results were further related to the hardness test results and the calculatedactivation energy. The results showed that for the compressed AZ31, the recrystallization can occuron the samples with the strain just above 10% and the deformation twinning plays an important roleon the nucleation and grain growth of the recrystallization. It was found that the twinning boundarywas the location of the recrystallization nuclei and a lot of recrystallized grains with equiaxed shapewere found along the twinning boundaries. The relationships among the nuclei orientations and thecrystallographic orientations on both sides of the twining boundary have been statisticallyinvestigated. The effects of the compressed strain and the annealing temperature on annealingbehavior were also discussed based on the experimental results
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/02/16/transtech_doi~10.4028%252Fwww.scientific.net%252FMSF.546-549.267.pdf
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