Sintering behavior of Lanthana-bearing nanostructured ferritic steel consolidated via spark plasma sintering
- Univ. of Idaho, Moscow, ID (United States); Center for Advanced Energy Studies (CAES), Idaho Falls, ID (United States)
- Boise State Univ., Boise, ID (United States); Center for Advanced Energy Studies (CAES), Idaho Falls, ID (United States)
Elemental powder mixture of Fe–14Cr–1Ti–0.3Mo–0.5La2O3 (wt%) composition is mechanically alloyed for different milling durations (5, 10 and 20 h) and subsequently consolidated via spark plasma sintering under vacuum at 950 °C for 7 min. The effects of milling time on the densification behavior and density/microhardness are studied. The sintering activation energy is found to be close to that of grain boundary diffusion. The bimodal grain structure created in the milled and sintered material is found to be a result of milling and not of sintering alone. The oxide particle diameter varies between 2 and 70 nm. As a result, faceted precipitates smaller than 10 nm in diameter are found to be mostly La–Ti–Cr-enriched complex oxides that restrict further recrystallization and related phenomena.
- Research Organization:
- Idaho National Lab. (INL), Idaho Falls, ID (United States)
- Sponsoring Organization:
- USDOE
- Grant/Contract Number:
- AC07-05ID14517
- OSTI ID:
- 1294356
- Report Number(s):
- INL/JOU-13-30950
- Journal Information:
- Advanced Engineering Materials, Vol. 18, Issue 2; ISSN 1438-1656
- Publisher:
- WileyCopyright Statement
- Country of Publication:
- United States
- Language:
- English
Web of Science
A study on microstructural evolution and corrosion behavior of spark plasma sintered Fe–Cr alloy system
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journal | August 2019 |
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