Effect of lamellar microstructure on oxidation kinetics of Fe3Al sintered by hot isostatic pressing
Source abstract
Abstract
Abstract The present paper focuses on the investigation of the relationship between microstructure of Fe3Al prepared by hot isostatic pressing (HIP) and kinetics of alumina layer formation during oxidation at 900 °C, 1000 °C and 1100 °C. As prepared HIPed Fe3Al sample reveals lamellar microstructure with inhomogeneous Al distribution which originates from the preliminary mechanical activation of Fe–Al mixture. At 900 °C, Fe3Al oxidation is characterized by selective growth of very rough alumina layer containing only transient aluminium oxides. In addition to these transient oxides, α-Al2O3 stable phase is formed at 1000 °C. At the highest temperature (1100 °C), continuous and relatively smooth alumina layer mainly contains fine crystallites of α-Al2O3. The initial lamellar structure and phase inhomogeneity in as-HIPed Fe3Al samples are supposed to be the main factors that determine observed peculiarities after Fe3Al oxidation at 900 °C and 1000 °C.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Intermetallics and Advanced Alloy Properties · High-Temperature Coating Behaviors · Aluminum Alloys Composites Properties
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (21)
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1. Nickel and iron aluminides: an overview on properties, processing and applications10.1016/0966-9795(95)00056-9 ↗
2. Alloy design of intermetallics for protective scale formation and for use as precursors for complex ceramic phase surfaces10.1016/j.intermet.2004.02.019 ↗
3. Critical factors affecting the high-temperature corrosion performance of iron aluminides10.1016/S0921-5093(98)00924-1 ↗
4. High-temperature oxidation characteristics of ODS-Fe3 Al10.4028/www.scientific.net/MSF.251-254.195 ↗
5. Oxidation, sulfidation and hot corrosion of intermetallic compound Fe3Al at 605°C and 800°C10.1016/S0254-0584(98)00280-6 ↗
6. High-temperature oxidation of Fe3 Al-based iron aluminides in oxygen10.1016/S0010-938X(01)00035-X ↗
7. The oxidation improvement of Fe3Al based alloy with cerium addition at temperature above 1000°C10.1016/S0921-5093(03)00468-4 ↗
8. The oxidation of Fe3Al–(0, 2, 4, 6%)Cr alloys at 1000°C10.1016/S0921-5093(02)00112-0 ↗
9. Microstructure – property relationship for iron aluminides
10. High temperature environmental interactions in carbon-alloyed iron aluminide of low Al content10.1016/j.msea.2003.09.079 ↗
11. AFM study of the oxide film formed on dual phase Fe3Al–Fe3AlC intermetallics10.1016/j.intermet.2004.04.044 ↗
12. Reactive sintering and reactive hot isostatic pressing of iron aluminides
13. Characterization of Fe3 Al-based intermetallic alloys fabricated by mechanical alloying and HIP consolidation10.1016/S0921-5093(00)01025-X ↗
14. Effect of carbon on the long-term oxidation behavior of Fe3Al ion aluminides10.1023/A:1015348320981 ↗
15. Preparation and characterization of iron aluminide based intermetallic alloy from titaniferous magnetite ore10.1016/S0925-8388(03)00197-X ↗
16. Oxidation behaviour of Fe3Al nanoparticles prepared by hydrogen plasma–metal reaction10.1088/0957-4484/14/5/311 ↗
17. Formation mechanism of Fe3Al and FeAl intermetallic compounds during mechanical alloying10.1007/s10853-005-0718-4 ↗
18. X-ray line broadening from filed aluminum and wolfram
19. Comparison of the high-temperature oxidation of uncoated and CVD–FBR aluminized AISI-304 stainless steel10.1023/A:1020529223965 ↗
20. Calculations of parabolic reaction rate constants10.1007/BF00667057 ↗
21. Doychak · 1994 · 977