Microstructure evolution of undercooled binary Co–Sn near eutectic alloys under high magnetic field
Source abstract
Abstract
The non-equilibrium solidification behavior of deeply undercooled Co-Sn binary alloys (hypoeutectic Co 79.5 Sn 20.5 at.%, eutectic Co 76 Sn 24 at.% and hypereutectic Co 72 Sn 28 at.%) has been investigated by the glass fluxing method under high magnetic fields up to 12 T. Analysis of the results showed that anomalous eutectics consistently manifest in the terminal microstructure of Co-Sn binary alloys regardless of whether a magnetic field is applied, but the magnetic field reduces the critical undercooling for their formation and accelerates their growth. The application of a high magnetic field reduces the critical undercooling for the formation of anomalous eutectics without changing the primary solidification pathway. It was found that at low undercoolings, regular eutectics formed preferentially with a mutual transformation between regular and anomalous eutectics subsequently. At large undercoolings, regular and anomalous eutectics formed nearly simultaneously, further analysis revealed that the two eutectic phases can transform from either coupled or uncoupled growth states into anomalous eutectics. The present research reveals the microstructural evolution characteristics of Co-Sn binary alloys and explains the origin of anomalous eutectics. It enriches the theory of the effects of high magnetic fields on alloy solidification and offers practical guidance for optimizing the microstructures of eutectic alloys.
Source: openalex_inverted_index · Quality: baseline
Research context
OpenAlex topics: Solidification and crystal growth phenomena · Metallic Glasses and Amorphous Alloys · Intermetallics and Advanced Alloy Properties
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (43)
Show source-provided references
1. Relation between corrosion behavior and microstructure of Mg–Zn–Y alloys prepared by rapid solidification at various cooling rates10.1016/j.corsci.2008.11.003 ↗
2. Microstructure and mechanical properties of Al-Si alloys produced by rapid solidification and hot extrusion10.3390/ma16155223 ↗
3. Phase-selective recrystallization makes eutectic high-entropy alloys ultra-ductile10.1038/s41467-022-32444-4 ↗
4. Five decades of research on the development of eutectic as engineering materials10.1016/j.pmatsci.2021.100793 ↗
5. Solidification behavior and microstructure of Ag–Cu eutectic alloy at different sub-rapid cooling rates10.1016/j.matchemphys.2023.128521 ↗
6. Eutectic growth kinetics and microscopic mechanical properties of rapidly solidified CoCrFeNiMo0.8 high entropy alloy10.1016/j.actamat.2022.118149 ↗
7. Microstructure and morphology of Si crystals grown in pure Si and Al–Si melts10.1088/1361-648X/ac3792 ↗
8. Nucleation-controlled microstructures and anomalous eutectic formation in undercooled Co-Sn and Ni-Si eutectic melts10.1007/s11661-003-0199-5 ↗
9. Mechanism of anomalous eutectic formation in the solidification of undercooled Ni-Sn eutectic alloy10.1557/JMR.2008.0259 ↗
10. In situ and ex situ studies of anomalous eutectic formation in undercooled Ni-Sn alloys10.1016/j.actamat.2020.07.048 ↗
11. Banded regular/anomalous eutectic in rapidly solidified Co-61.8 at.% Si10.1016/j.scriptamat.2019.04.032 ↗
12. Microstructural characteristics of Ni-Sb eutectic alloys under substantial undercooling and containerless solidification conditions10.1007/s11661-002-0223-1 ↗
13. Remelting-induced anomalous eutectic formation during solidification of deeply undercooled eutectic alloy melts10.1016/j.actamat.2015.05.014 ↗
14. A review of the microstructure and properties of superalloys regulated by magnetic field10.1016/j.jmrt.2024.05.189 ↗
15. Application of differential thermal analysis to investigation of magnetic field effect on solidification of Al-Cu hypereutectic alloy10.1016/j.jallcom.2010.06.056 ↗
16. Reexaminations of the effects of magnetic field on the nucleation of undercooled Cu melt10.7567/JJAP.55.105601 ↗
17. Effect of steady magnetic field on undercooling of Al-Cu alloy melts10.1209/0295-5075/126/46001 ↗
18. Nucleation of supercooled Co melts under a high magnetic field10.1016/j.matchemphys.2018.12.070 ↗
19. In-situ fabrication of graded material with the application of a horizontal magnetic field during directional solidification10.1016/j.matchar.2018.05.007 ↗
20. High-gradient magnetic field-controlled migration of solutes and particles and their effects on solidification microstructure: a review10.1088/1674-1056/27/11/118103 ↗
21. Revealing influence mechanism of a transverse static magnetic field on the refinement of primary dendrite spacing during directional solidification10.1016/j.jcrysgro.2019.04.010 ↗
22. Nucleation and growth of discontinuous precipitates in Cu-Ag alloys10.1088/2053-1591/ac5775 ↗
23. A crystallographic investigation on the growth of Al4Sr crystals under a high magnetic field10.1063/1.5097251 ↗
24. Effect of a high magnetic field on the macro- and microstructures of Zn-Mg alloy during semi-solid isothermal annealing process10.1016/j.jcrysgro.2020.125947 ↗
25. Crystal orientation induced by high magnetic fields during peritectic reaction of alloys10.1016/j.matchar.2021.111608 ↗
26. Alternating-magnetic-field induced enhancement of diffusivity in Ni-Cr alloys10.1038/s41598-017-18500-w ↗
27. Microstructure development in eutectic Al-Fe alloy during directional solidification under high magnetic fields at different growth velocities10.1007/s10853-021-06298-y ↗
28. Research progress of magnetic field regulated mechanical property of solid metal materials10.3390/met12111988 ↗
29. Constitutional supercooling and corresponding microstructure transition triggered by high magnetic field gradient during directional solidification of Al-Fe eutectic alloy10.1016/j.matchar.2022.111920 ↗
30. 4D printing of magnetically responsive shape memory polymers: toward sustainable solutions in soft robotics, wearables, and biomedical devices
31. Magnetic field intensity dependent microstructure evolution and recrystallization behavior in a Co-B eutectic alloy10.1016/j.jmst.2022.08.014 ↗
32. Microscopic mechanisms of solute migration and redistribution at the solid-liquid interface during directional solidification of a Cu-Ag eutectic alloy under high magnetic fields10.1007/s11661-024-07654-8 ↗
33. Synergistic control of microstructures and properties in eutectic high-entropy alloys via directional solidification and strong magnetic field10.1016/j.jmrt.2024.01.058 ↗
34. Influence of high magnetic field on the liquid-liquid phase separation behavior of an undercooled Cu-Co immiscible alloy10.1016/j.jallcom.2020.155502 ↗
35. Formation of polycrystalline-Co particle-chains in Cu-Co alloy during liquid-phase sintering in a high magnetic field10.1007/s10853-024-09983-w ↗
36. High steady magnetic field processing of functional magnetic materials
37. Bondi · 1956
38. Properties and microstructural evolution of a ternary Cu-Co-Fe immiscible alloy solidified under high magnetic fields10.1016/j.jmrt.2023.04.086 ↗
39. Revealing the nucleation and growth modes upon rapid solidification of undercooled Co-24 at.% Sn eutectic alloy by the crystallographic orientation relations10.1016/j.jallcom.2024.175806 ↗
40. Microstructure transition of Al-Cu eutectic alloy during containerless rapid solidification
41. Phase selection and re-melting-induced anomalous eutectics in undercooled Ni-38 wt% Si alloys10.1007/s10853-016-0312-y ↗
42. Cellular automaton simulation of the growth of anomalous eutectic during laser remelting process10.3390/ma11101844 ↗
43. Globular to lamellar transition during anomalous eutectic growth