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- Title
快淬钐铁合金不同速率下的相结构演变.
- Authors
王书桓; 李阳; 张凯璇; 赵定国; 宋春燕
- Abstract
The experiment of preparing Sm-Fe Alloys ribbons with high vacuum arc melting and melt spin ning furnace was performed with the different cooling rates(105 106 K·s-1) which were realized by controlling roller speed. In the process of condensing Sm-Fe alloys rapidly, the alloy droplets falling on roller were rapidly condensed into continuous noncrystalline or microcrystalline ribbons due to the very high thermal gradient. The evolution of phase structure of rapidly quenched Sm-Fe alloys in different rates was researched by XRD phase testing technology. The results showed that the Sm-Fe alloys solidified in conventional chilling conditions had four phases of α-Fe, SmFe3, SmFe2 and Sm2Fe17. The α-Fe phase of Sm-Fe alloys disappeared under the condition of rapid solidification, and the SmFe3 phase also disappeared with increase of the cooling rate, and then the final phases of alloys only contained SmFe2 and Sm2Fe17.With further increasing the cooling rate, noncrystalline appeared in Sm-Fe alloys.Moreover, the content of noncrystalline could be up to 50% with rapidly quenching rate of 36.5 m·s-1.
- Publication
Journal of the Chinese Society of Rare Earths, 2018, Vol 36, Issue 4, p486
- ISSN
1000-4343
- Publication type
Article
- DOI
10.11785/S1000-4343.20180412