Realization of magnetic-field-induced martensitic transformation in melt-spun Fe-Mn-Ga alloys
Source abstract
Abstract
This study investigates the crystal structural, magnetic properties, and phase transformation of melt-spun Fe-Mn-Ga alloys. We found that melt-spun Fe 50Mn 25Ga 25 alloy crystallizes into a γ phase, which exhibits ferromagnetism at room temperature, and undergoes a magnetic transition at 257 K. On the other hand, melt-spun Fe 49Mn 24Ga 27, Fe 43Mn 28Ga 29 and Fe 44Mn 28Ga 28 alloys exhibit a single body-centered cubic phase, with the latter two alloys undergo martensitic transformation during cooling. Additionally, a magnetic-field-induced martensitic transformation was observed within the temperature range of 180 to 160 K. Notably, the martensitic transformation temperatures of these two melt-spun Fe-Mn-Ga alloys are significantly lower compared to other fabrication methods, potentially attributed to the atomic disorder, microstructure and internal stresses that arise during the melt-spun fabrication process. These findings expand the available preparation methods for Fe-Mn-Ga alloys and offer new possibilities for future applications.
Source: expertdata · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Shape Memory Alloy Transformations · Magnetic Properties and Applications · Magnetic Properties of Alloys
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
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