Transformation of RE2Fe17Bx (RE＝Nd, Dy) Metastable Phase Crystallized from Undercooled Melt
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- OZAWA Shumpei
- Department of Aerospace Engineering, Tokyo Metropolitan University
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- ITOU Akira
- Department of Aerospace Engineering, Tokyo Metropolitan University
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- KURIBAYASHI Kazuhiko
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency
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- MIYOSHI Toshio
- NEOMAX Company, Hitachi Metals, Ltd,
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- HIROSAWA Satoshi
- NEOMAX Company, Hitachi Metals, Ltd,
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Description
8Nd_2Dy_85Fe_5B droplets were containerlessly solidified using a 26m drop tube. The substitution of Dy for Nd in the 10Nd_85Fe_5B sample suppressed the formation of the a-Fe phase and promoted the crystallization of theRE2Fe17Bx metastable phase. The sample with a diameter range of 1200uM to 1500uM mainly consisted of the RE2Fe17Bx metastable phase. The metastable phase was partially decomposed into the a-Fe and RE2Fe14B phase during the postsolidification cooling stage. When the sample washeated, the metastable phase decomposed into the a-Fe and RE2Fe14B phases at around 1140K which was 40K higher than that in the 10Nd_85Fe_5B ternary alloy. Key Words: Metastable phase, Undercooling, solidification, Nd-Fe-B magnet, Containerless processing
Journal
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- Journal of The Japan Society of Microgravity Application
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Journal of The Japan Society of Microgravity Application 26 (2), 122-, 2009-04-30
The Japan Society of Microgravity Application
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Details 詳細情報について
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- CRID
- 1390286981377392896
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- NII Article ID
- 130007972325
- 10025111078
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- NII Book ID
- AN10537663
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- NDL BIB ID
- 10297084
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- ISSN
- 09153616
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- Text Lang
- en
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- Data Source
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- JaLC
- NDL Search
- CiNii Articles
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- Abstract License Flag
- Disallowed
