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Heat treatment of metastable Nd2Fe17Bx phase formed from undercooled melt of Nd–Fe–B alloys
| Content Provider | Semantic Scholar |
|---|---|
| Author | Ozawa, Shumpei Kuribayashi, Kazuhiko Hirosawa, Satoshi Reutzel, S. Herlach, Dieter M. |
| Copyright Year | 2006 |
| Abstract | Alloys of Nd10Fe85B5, Nd12Fe82B6, and Nd14Fe79B7 were melted and then solidified without a container using a drop tube. In the as-dropped sample, a large amount of the metastable Nd2Fe17Bx phase was contained. Particularly in relatively large samples, the metastable phase, which was partially decomposed into the Nd2Fe14B and α-Fe phases, shows a microstructure similar to that of normalized low-carbon steel. The heat treatment of the as-dropped samples induces a dual-stage phase transformation. The first stage of the phase transformation, which is dominant in the Nd14Fe79B7 alloy, is the diffusive phase transformation from Nd2Fe17Bx and Nd-rich phases into the Nd2Fe14B phase at 950K, and the second stage of the transformation, which is dominant in the Nd10Fe85B5 alloy, is the decomposition of the metastable phase into the Nd2Fe14B and α-Fe phases at 1100K. Although the rate of the phase transformation in either stage is controlled by the diffusion of Nd atoms, the diffusivity at the first stage of the phas... |
| Starting Page | 123906 |
| Ending Page | 123906 |
| Page Count | 1 |
| File Format | PDF HTM / HTML |
| DOI | 10.1063/1.2386943 |
| Volume Number | 100 |
| Alternate Webpage(s) | https://elib.dlr.de/44875/1/JApplPhys_100_123906%5B1%5D.pdf |
| Alternate Webpage(s) | https://doi.org/10.1063/1.2386943 |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
