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 effect of 0.30 Yb (mass fraction,%) additions on the microstructure and properties ofhigh strength Al-Zn-Mg-Cu-Zr aluminum alloys has been investigated by TEM, optical microscopy,hardness and electric conductivity measurement, tensile test, stress corrosion cracking test. Theresults show that the ytterbium additions to high strength Al-Zn-Mg-Cu-Zr aluminum alloyssignificantly inhibited recrystallization during solution treatment. The tensile and yield strengths,elongation, hardness, electric conductivity and stress corrosion cracking resistance of theYb-containing alloys are improved compared to the alloys without Yb additions. By Yb additions, thecritical stress intensity (KISCC) is enhanced from 7 MPa·m1/2 up to 14.5 MPa·m1/2 with theimprovement of the strength and ductility. The mechanism for the property improvement from Ybadditions has been discussed
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/02/16/transtech_doi~10.4028%252Fwww.scientific.net%252FMSF.546-549.1021.pdf
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