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:
Mg alloy has a poor formability at room temperature because of lack of the active slipsystems, but the grain refinement improves its ductility. Friction stir processing (FSP) can createhomogeneous microstructure consisting of fine grains in Mg alloys, thus it would be expected thatFSP enhances the formability of Mg alloys. In this study, multi-pass FSP was applied to Mg alloyAZ31B, and then formability of FSPed alloy was evaluated. Multi-pass FSP produced the finerecrystallized grains in Mg alloy. The stir zone exhibited larger fracture limit major strains than thebase material under uniaxial tension and plane strain deformation, and these values increased withdecreasing grain size. The stir zone having grain size of 2.9 μm showed the fracture limit majorstrains which are roughly as same as those of an annealed pure Al. The present study suggests thatFSP is an effective method to enhance the formability of Mg alloys
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/02/15/transtech_doi~10.4028%252Fwww.scientific.net%252FMSF.539-543.3775.pdf
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