Suppression and Recovery of Martensitic Transformation and Magnetism in Mechanically and Thermally Treated Magnetic Shape‐Memory Ni−Mn−Ga Melt‐Spun Ribbons
Source abstract
Abstract
As‐melt‐spun Ni50.2Mn28.3Ga21.5 ribbons are subjected to milling and subsequent annealing for various times. With progressing milling time, the martensitic transformation is gradually suppressed, magnetic moment deteriorates, whereas the crystal structure undergoes a body centered tetragonal (bct) into face centered cubic (fcc) change. High‐resolution transmission electron microscopy demonstrates a twin‐deformed zone in fcc powder particles, which works to improve circularity of as‐produced powders. Subsequent annealing of as‐milled powders restores martensitic transformation and magnetism, as well as it reverts the fcc into the original 5M structure. It is hence showcased that due to an allotropic transformation, brittle Heusler alloys are mechanically optimized for 3D printing without loss of their functional properties.
Source: crossref · Quality: baseline
Research context
OpenAlex topics: Shape Memory Alloy Transformations · Piezoelectric Actuators and Control · Aeroelasticity and Vibration Control
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
The Aleksander Krupkowski Institute of Metallurgy and Materials Science Polish Academy of Sciences 25 Reymonta St. 30-059 Kraków Poland
The Faculty of Materials Science and Engineering Warsaw University of Technology 141 Wołoska St. 02-507 Warsaw Poland
Institute of Non Ferrous Metals 5 Sowinskiego Str. Gliwice 44-100 Poland
Institute of Materials Physics Helmholtz-Zentrum Geesthacht Max-Planck-Strasse 1 D-21502 Geesthacht Germany
Funding
Narodowe Centrum Badań i Rozwoju
References (33)
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