Friction Stir Welding of a TRIP Fe49Mn30Cr10Co10C1 High Entropy Alloy
| Autor: | Nikita Stepanov, D.G. Shaysultanov, Sergey Zherebtsov, Kazimzhon Raimov |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
carbides
lcsh:TN1-997 Equiaxed crystals Recrystallization (geology) Materials science structure evolution Alloy 02 engineering and technology mechanical properties engineering.material 01 natural sciences Indentation hardness 0103 physical sciences Friction stir welding General Materials Science lcsh:Mining engineering. Metallurgy high-entropy alloys 010302 applied physics High entropy alloys Metallurgy Metals and Alloys 021001 nanoscience & nanotechnology Microstructure martensitic transformation friction stir welding Diffusionless transformation engineering 0210 nano-technology |
| Zdroj: | Metals; Volume 11; Issue 1; Pages: 66 Metals, Vol 11, Iss 66, p 66 (2021) |
| ISSN: | 2075-4701 |
| DOI: | 10.3390/met11010066 |
| Popis: | The effect of friction stir welding parameters on the structure and properties of Fe49Mn30Cr10Co10C1 high-entropy alloy welds was studied. Due to the development of the TRIP effect, the mechanical behaviour of this alloy was associated with the γ fcc - to - ε hcp martensitic transformation. In the initial condition, the microstructure of the program alloy comprised equiaxed fcc grains and small fractions of the hcp ε-martensite (~5%) and М23С6 carbides (~4%). Friction stir welding of the program alloy resulted in recrystallization of the stir zone and a decrease in the fraction of the carbides to 1–2%; however, the percentage of the hcp phase remained at nearly the same level as that in the initial condition. Post-welding tests showed a considerable increase in the strength and microhardness of the welds both due to the recrystallization-induced decrease in grain size and martensitic transformation. |
| Databáze: | OpenAIRE |
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