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 and corrosion behaviour of 6061 and 6013 sheet material wereinvestigated in the naturally aged and peak-aged heat treatment conditions. Transmission electronmicroscopy did not reveal strengthening phases in the naturally aged sheet. In the peak-aged temper,β’’ precipitates were observed in alloy 6061, whereas both β’’ and Q’ phases were present in 6013-T6 sheet. Marked grain boundary precipitation was not found. Corrosion potentials of the alloys6061 and 6013 shifted to more active values with increasing aging. For the copper containing 6013sheet, the potential difference between the tempers T4 and T6 was more pronounced. Whenimmersed in an aqueous chloride-peroxide solution, alloy 6061 suffered predominantlyintergranular corrosion and pitting in the tempers T4 and T6, respectively. On the contrary, 6013sheet was sensitive to pitting in the naturally aged condition, and intergranular corrosion was theprevailing attack in the peak-aged material. Both alloys 6061 and 6013 were resistant to stresscorrosion cracking in the tempers T4 and T6
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/02/13/transtech_doi~10.4028%252Fwww.scientific.net%252FMSF.519-521.735.pdf
