BU-04 Exploring the Magnetic and Magnetocaloric Properties of PLA Composite Filaments of Mn0.5Fe0.5Ni0.95Cr0.05Si0.95Al0.05 for Additive Manufacturing
Creators: Thomas F. McKenzie
Ashika Bhatta
Jemma R. DeFeo
Jacob Casey
Venkateswara Yenugonda
Shakhzodkhon Mukaddaskhonov
Gejla Toromani
Arjun K. Pathak
and Mahmud Khan
Publisher: name: IEEE
Year: 2025

Mn0.5Fe0.5Ni0.95Cr0.05Si0.95Al0.05 that belongs to the Mn1-xFex-δNiδSi1-yAly intermetallic family [1, 2] exhibits a first-order phase transition at ~325 K on heating [3]. For field changes of 20 kOe and 50 kOe peak entropy changes of -16 J kg-1 K-1 and -42 J kg-1 K-1, respectively, have been reported for the compound. Like the other members of the Mn1-xFex-δNiδSi1-yAly family, Mn0.5Fe0.5Ni0.95Cr0.05Si0.95Al0.05 physically deteriorates to powder form over a few thermal cycles due to the large thermal expansion that accompanies the first order phase transition. This makes this material, in bulk form, unsuitable for application in magnetocaloric cooling. Additive manufacturing is an emerging method that can be utilized to fabricate polylactic acid (PLA)-based composite filament for fused deposition modeling [4]. This method allows design of parts of various shapes that are physically stable over many thermal cycles. Here we present an experimental study on the structural and magnetocaloric properties of PLA-based composite filaments containing nominal (27, 54, and 57) wt.% of Mn0.5Fe0.5Ni0.95Cr0.05Si0.95Al0.05 powder. X-ray diffraction patterns confirmed that powder and filament exhibited the hexagonal and orthorhombic crystal structures at room temperature. The magnetization data over a temperature range, M(T), showed a first-order magnetic phase transition accompanied by thermal hysteresis in all samples. The entropy changes evaluated from the magnetization data peaked at 302 K for the powder sample and 322 K for filament with 57 wt.% powder during warming. For a field change of 5T, peak entropy changes of -5.5 J kg-1 K-1 and -1.2 J kg-1 K-1 were observed for powder and filament, respectively. The work at State University of New York (SUNY), Buffalo State University, was supported by the National Science Foundation Award No. DMR-2213412.References: [1] A. Biswas, A.K. Pathak, N.A. Zarkevich, Acta Mater., Vol. 180, p.341 (2019) [2] Jacob Casey, Babajide Akintunde, Ranjit Chandra Das, J. Magn. Magn. Mater., Vol. 579, 170862 (2023) [3] A. Bhatta, J. Casey, S. Bhattacharjee, AIP Advances., Vol. 14, 015336 (2024) [4] Á. Díaz-García, J.Y. Law, A. Cota, ScienceDirect., Vol. 24, 101049 (2020)
Mn0.5Fe0.5Ni0.95Cr0.05Si0.95Al0.05 that belongs to the Mn1-xFex-δNiδSi1-yAly intermetallic family [1, 2] exhibits a first-order phase transition at ~325 K on heating [3]. For field changes of 20 kOe and 50 kOe peak entropy changes of -16 J kg-1 K-1 and -42 J kg-1 K-1, respectively, have been reported for the compound. Like the other members of the Mn1-xFex-δNiδSi1-yAly family, Mn0.5Fe0.5Ni0.95Cr0.05Si0.95Al0.05 physically deteriorates to powder form over a few thermal cycles due to the large thermal expansion that accompanies the first order phase transition. This makes this material, in bulk form, unsuitable for application in magnetocaloric cooling. Additive manufacturing is an emerging method that can be utilized to fabricate polylactic acid (PLA)-based composite filament for fused deposition modeling [4]. This method allows design of parts of various shapes that are physically stable over many thermal cycles. Here we present an experimental study on the structural and magnetocaloric properties of PLA-based composite filaments containing nominal (27, 54, and 57) wt.% of Mn0.5Fe0.5Ni0.95Cr0.05Si0.95Al0.05 powder. X-ray diffraction patterns confirmed that powder and filament exhibited the hexagonal and orthorhombic crystal structures at room temperature. The magnetization data over a temperature range, M(T), showed a first-order magnetic phase transition accompanied by thermal hysteresis in all samples. The entropy changes evaluated from the magnetization data peaked at 302 K for the powder sample and 322 K for filament with 57 wt.% powder during warming. For a field change of 5T, peak entropy changes of -5.5 J kg-1 K-1 and -1.2 J kg-1 K-1 were observed for powder and filament, respectively. The work at State University of New York (SUNY), Buffalo State University, was supported by the National Science Foundation Award No. DMR-2213412.References: [1] A. Biswas, A.K. Pathak, N.A. Zarkevich, Acta Mater., Vol. 180, p.341 (2019) [2] Jacob Casey, Babajide Akintunde, Ranjit Chandra Das, J. Magn. Magn. Mater., Vol. 579, 170862 (2023) [3] A. Bhatta, J. Casey, S. Bhattacharjee, AIP Advances., Vol. 14, 015336 (2024) [4] Á. Díaz-García, J.Y. Law, A. Cota, ScienceDirect., Vol. 24, 101049 (2020)