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 influence of aging treatment on microstructure, mechanical and electrical propertiesof 7A52 alloy was investigated by mechanical property test, electrical conductivity measurement,XRD and TEM analysis. The results showed that the alloy was a typical aging hardening alloy.During aging supersaturated solution decomposed, G.P. zones and η'(MgZn2) precipitated. Theprecipitates of the alloy aging at 100℃ were mainly G.P. zones with the size of about 5nm. Duringaging at 120℃, η’ precipitates nucleated from the G.P. zones. With increasing aging temperatureand time, the size and amount of η' increased. As aged at 120℃ for 24h the tensile strength, yieldstrength, elongation and electrical conductivity of the alloy were 496 MPa, 445 MPa, 9.5% and 26%IACS, respectively. The G.P. zones and η' dispersion strengthening are the major strengtheningmechanisms for the studied alloy at the single-stage peak aging
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/02/16/transtech_doi~10.4028%252Fwww.scientific.net%252FMSF.546-549.867.pdf
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