Microstructure of Bi-containing zirconium alloys
| Autor: | Jinlong Zhang, Han-Pei Zhao, Jiao Huang, Meiyi Yao, Bangxin Zhou, Jian-Chao Peng |
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| Rok vydání: | 2016 |
| Předmět: |
Materials science
Precipitation (chemistry) Zirconium alloy Metallurgy Metals and Alloys Analytical chemistry chemistry.chemical_element 02 engineering and technology 021001 nanoscience & nanotechnology Condensed Matter Physics Microstructure Bismuth 020401 chemical engineering chemistry Transmission electron microscopy Materials Chemistry 0204 chemical engineering Physical and Theoretical Chemistry Selected area diffraction 0210 nano-technology Spectroscopy Solid solution |
| Zdroj: | Rare Metals. 41:3566-3573 |
| ISSN: | 1867-7185 1001-0521 |
| Popis: | The effect of Bi addition (0.05 wt%–0.50 wt%) on the microstructure of zirconium alloys, including T5 (Zr–0.7Sn–1.0Nb–0.3Fe–0.1Cr), S5 (Zr–0.8Sn–0.35Nb–0.4Fe–0.1Cr), Zr–4(Zr–1.5Sn–0.2Fe–0.1Cr) and Zr–1Nb, was investigated by transmission electron microscopy (TEM), energy-dispersive spectroscopy (EDS) and selected area electron diffraction (SAED). Results show that with the increase in Bi content, h-Zr(Fe,Cr,Nb)2, o-Zr(Fe,Sn,Bi)2 and Zr–Fe–Cr–Nb–Sn–Bi second-phase particles (SPPs) precipitate successively in the T5 + xBi and S5 + xBi alloys; in the Zr–4 + xBi alloys, h-Zr(Fe,Cr)2, o-Zr(Fe,Sn,Bi)2, Zr–Fe–Cr–Sn–Bi and Zr–Fe–Cr–Bi SPPs are detected successively. While as for Zr–1Nb + xBi alloys, Bi-free SPPs appear. The addition of Bi promotes the precipitation of SPPs with Sn in the alloys. The concentration of Bi dissolved in α-Zr matrix increases with the decrease in Sn content in the alloys. Adding reasonable Bi has little influence on the solid solution content of Nb in α-Zr matrix. |
| Databáze: | OpenAIRE |
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