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:
Microstructure evolution and mechanical properties of an AZ61 Mg alloy processed bycyclic extrusion compression were investigated. It is shown that CEC process may be appliedsuccessfully to AZ61 Mg alloys, and this leads to excellent grain refinement with grain size of ~0.8μmafter 15 passes at 573K and to significant improvements in yield strength, ductility and hardness ofAZ61 materials with slight compressive strength decreases. Dislocations were induced at initial stageof CEC process, and with increased deformation, tangled dislocations developed to form dislocationboundaries and subgrain boundaries, and then evolved into low angle grain boundaries (LAGBs) andhigh angle grain boundaries (HAGBs) which was regarded as continuous dynamic recovery andrecrystallization (CDRR)
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/02/16/transtech_doi~10.4028%252Fwww.scientific.net%252FMSF.546-549.253.pdf
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