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:
Recently, a new super-high-strength Al-Zn-Mg-Cu alloy with Zr bearing was developed inBIAM. In this paper, the effect of microalloying element Zr on the microstructure and mechanicalproperties of the alloy was investigated. It was found that the influence of Zr on the microstructureand age-hardening behaviors was remarkable. The strength of the alloy increases with increasing thecontent of zirconium, and the peak value of the elongation appeared when the content of Zr was0.06%(mass fraction) and then decreases. The fracture behavior was also studied. The result showsthat the fracture mechanism of the alloy was converted from intergranular brittle to transgranularductile model with increasing the content of zirconium. Finally, the optimum contents of Zr in thealloy were proposed as 0.10%~0.14%
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/02/16/transtech_doi~10.4028%252Fwww.scientific.net%252FMSF.546-549.1069.pdf
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