Role of Heat Treatment on Atomic Order and Ordering Domains in Ni45Co5Mn36.6In13.4 Ribbons
| Autor: | Yan-Ling Ai, Haibo Wang, Xueman Wan, Yan Feng, Xiaohai Bian |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
Quenching
Diffraction Phase transition Materials science Mining engineering. Metallurgy Annealing (metallurgy) heat treatment Transition temperature Metals and Alloys Intermetallic TN1-997 Microstructure domain morphology Transmission electron microscopy Chemical physics phase transition transmission electron microscopy intermetallics General Materials Science |
| Zdroj: | Metals, Vol 11, Iss 1472, p 1472 (2021) Metals; Volume 11; Issue 9; Pages: 1472 |
| ISSN: | 2075-4701 |
| Popis: | The effects of cooling rate and annealed temperature on the state of atomic order and microstructure of L21 domains of Ni45Co5Mn36.6In13.4 ribbons are investigated comprehensively. The state of atomic order is quantitatively studied by in situ X-ray diffraction (XRD), and the microstructure of ordered domains is revealed by transmission electron microscopy (TEM). As-spun ribbons show B2 structure of low atomic order, exhibiting the dispersive L21 domains’ morphology. By applying heat treatment around the order–disorder transition temperature followed by furnace cooling or quenching into water, respectively, we found the strong dependence of ordered domains on cooling rates. Furnace cooling samples show L21 domains with small sized antiphase boundary, revealing a high degree of atomic order, while quenching hinders the formation of ordered domains. Annealing above the order–disorder transition temperature followed by quenching preserves the disordered atomic state with the mixture of L21 structure in B2 matrix. |
| Databáze: | OpenAIRE |
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