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:
Severely rolled sheets of Al-4.5%Mg-0.7%Mn based alloys have been prepared to achievegrain refinement leading to low temperature superplasticity. Rolling is one of straining techniquewhich has a high possibility of industrial application. The alloys used were T1: base one adding0.08%Zr and 0.05Ti for suppression of grain growth, F1: 0.80%Fe addition and F2: 1.92%Fe additionto increase nucleation sites of recrystallization. For comparison, M1: Al-4.2%Mg was also prepared.All of samples were 99.8% cold rolled to thin sheet 0.1mm thick. The maximum elongation of 150%,which was markedly large in consideration of specimen thickness of 0.1mm, was obtained at 533Kand 1.4×10-3s-1 for T1 sample while the elongations for F1 and F2 showed less than 100%. On theother hand, M1 exhibited larger elongation of 190% at 533K and 1.4×10-3s-1. Further, difference insuperplastic deformation of these alloys was investigated by using SEM/ EBSP analysis ofintragranular misorientation, which reflects strain or stored energy generated during deformation withdislocation glide, to discuss the deformation mechanism
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/02/16/transtech_doi~10.4028%252Fwww.scientific.net%252FMSF.551-552.601.pdf
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