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:
Effect of solid solution elements on microstructure evolution and mechanical propertieswas investigated using a high purity Al (purity 99.99%) and Al-0.5 at.% X ( X = Si, Ag, Mg ) alloysdeformed by accumulative roll bonding (ARB) process up to 7 cycles (equivalent strain of 5.6) atambient temperature. The ARB-processed high purity Al showed the equiaxed microstructure havingmean grain size of 750 nm. On the other hand, the microstructure of the ARB-processed Al-0.5at.%Xalloys showed lamellar boundary structures elongated along RD. The mean lamellar boundaryspacing significantly differed depending on the alloying elements, which suggested that solute atomshad a significant effect on microstructure evolution. The difference in the grain size was regarded tobe caused by the difference in recovery processes in the alloys. The tensile strength of the alloysincreased with increasing the number of ARB cycles. In the Al-Si and Al-Ag alloys, the post-uniformelongation increased with increasing the number of the ARB cycles. On the other hand, the elongationof the Al-Mg hardly changed during the ARB process
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/02/19/transtech_doi~10.4028%252Fwww.scientific.net%252FMSF.584-586.547.pdf
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