ISSN:
1662-0356
Source:
Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
Topics:
Natural Sciences in General
,
Technology
Notes:
Tb-2Fe and Sm-2Fe molten alloys with a 1:2 molar ratio were unidirectionally solidifiedseparately in microgravity and normal gravity in concurrence with a magnetic flux (0-0.12T). TheTb-2Fe molten alloy was solidified unidirectionally in microgravity with a 0.1T magnetic flux andthe solidification product, TbFe2, had dominant [111] crystallographic alignment and themicrostructure was lamellar with an average lamellar thickness of 30μm oriented along thesolidification direction. The single phase SmFe2 was synthesized by unidirectional solidificationin microgravity with a magnetic flux of 0T, and the microstructure was lamellar. The averageSmFe2 lamella thickness was 30μm and each lamella possessed a 〈111〉 crystallographic alignmentalong the direction of cooling. The unidirectional solidification of Sm-2Fe molten alloys innormal gravity or in microgravity with a magnetic field resulted in Sm2Fe17 and Fe crystallinephases. The magnetostriction of TbFe2 solidified unidirectionally in microgravity with a 0.1Tmagnetic flux was 4,500ppm with an external 1.6T static magnetic flux. In TbFe2 solidified innormal gravity, the maximum magnetostriction remained at 2,000ppm with an external 1.6T staticmagnetic flux. The magnetostriction of single phase SmFe2 solidified unidirectionally inmicrogravity with a magnetic flux of 0T was -3,200ppm with an external 0.09T static magneticflux
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/01/42/transtech_doi~10.4028%252Fwww.scientific.net%252FAST.45.875.pdf
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