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:
The microstructures of Al-0.2Sc and Al-0.2Sc-0.12Zr alloys have been investigated.Theresults show that Al3Sc and Al3(Sc1-xZrx) dispersoids exist in as-rolled Al-0.2Sc and Al-0.2Sc-0.12Zralloy respectively, and their orientation is (001)α║(001)dispersoid, [010]α║[010]dispersoid.The Al3Scparticles in as-rolled Al-0.2Sc were precipitated from hot rolling process, while the largerAl3(Sc1-xZrx) particles in as-rolled Al-0.2Sc-0.12Zr from the solidification, and the small particlesalso from hot rolling process. There is segregation of Sc and Zr in the Al3(Sc1-xZrx) dispersoid, and Scis rich in the outside shell while Zr rich in the core of the particles. It is believed that the grain andsubgrain boundaries can be pinned by the Al3Sc particles when annealed after cold-rolling, and thismay lead to restricting the recrystallization of the Sc-containing alloys.And it’s not until thedissolution of Al3Sc that the recrystallization can happen in this kind of alloys
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/02/16/transtech_doi~10.4028%252Fwww.scientific.net%252FMSF.546-549.629.pdf
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