Additive manufacturing of functionally graded Co–Fe and Ni–Fe magnetic materials

Varun Chaudhary; Nartu Mohan Sai Kiran Kumar Yadav; Srinivas Aditya Mantri; Sriswaroop Dasari; Abhinav Jagetia; R. V. Ramanujan; R. Banerjee

doi:10.1016/j.jallcom.2020.153817

Additive manufacturing of functionally graded Co–Fe and Ni–Fe magnetic materials

Varun Chaudhary, Nartu Mohan Sai Kiran Kumar Yadav, Srinivas Aditya Mantri, Sriswaroop Dasari, Abhinav Jagetia, R. V. Ramanujan, R. Banerjee^*

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

104 Citations (Scopus)

Abstract

Accelerated development of soft magnetic materials is vital for addressing the challenges associated with improving the performance of electrical machines, transformer cores, electric vehicles etc. A combinatorial assessment of the structural, magnetic and mechanical properties of Co_100-xFe_x (x = 30 to 70) and Ni_100-xFe_x (x = 30 to 70) alloys has been carried out on samples fabricated via laser additive manufacturing (AM). Co_100-xFe_x showed a bcc structure in the composition range studied while Ni_100-xFe_x exhibited either single phase fcc or a mixture of fcc and bcc phases, depending on the composition. The saturation magnetization (M_s) for both Co_100-xFe_x and Ni_100-xFe_x compositionally graded alloys increases monotonically with increasing Fe content while the coercivity (H_c) variation is not monotonic. The M_s value of 199.3 emu/g for Co₇₀Fe₃₀ increases to 248 emu/g for Co₃₀Fe₇₀ alloys. Ni₇₀Fe₃₀ exhibits a M_s of 119.8 emu/g which increases to 168.7 emu/g for Ni₃₀Fe₇₀. The peak hardness is 260 VHN for the Co_100-xFe_x series and 160VHN for the Ni_100-xFe_x series. Such AM processed graded magnetic materials can be used for accelerated experiments to discover novel materials.

Original language	English
Article number	153817
Journal	Journal of Alloys and Compounds
Volume	823
DOIs	https://doi.org/10.1016/j.jallcom.2020.153817
Publication status	Published - May 15 2020
Externally published	Yes

Bibliographical note

Publisher Copyright:
© 2020 Elsevier B.V.

ASJC Scopus Subject Areas

Mechanics of Materials
Mechanical Engineering
Metals and Alloys
Materials Chemistry

Keywords

Additive manufacturing
Fe–Co
Fe–Ni
Soft magnetic materials

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10.1016/j.jallcom.2020.153817

Cite this

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title = "Additive manufacturing of functionally graded Co–Fe and Ni–Fe magnetic materials",

abstract = "Accelerated development of soft magnetic materials is vital for addressing the challenges associated with improving the performance of electrical machines, transformer cores, electric vehicles etc. A combinatorial assessment of the structural, magnetic and mechanical properties of Co100-xFex (x = 30 to 70) and Ni100-xFex (x = 30 to 70) alloys has been carried out on samples fabricated via laser additive manufacturing (AM). Co100-xFex showed a bcc structure in the composition range studied while Ni100-xFex exhibited either single phase fcc or a mixture of fcc and bcc phases, depending on the composition. The saturation magnetization (Ms) for both Co100-xFex and Ni100-xFex compositionally graded alloys increases monotonically with increasing Fe content while the coercivity (Hc) variation is not monotonic. The Ms value of 199.3 emu/g for Co70Fe30 increases to 248 emu/g for Co30Fe70 alloys. Ni70Fe30 exhibits a Ms of 119.8 emu/g which increases to 168.7 emu/g for Ni30Fe70. The peak hardness is 260 VHN for the Co100-xFex series and 160VHN for the Ni100-xFex series. Such AM processed graded magnetic materials can be used for accelerated experiments to discover novel materials.",

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AU - Chaudhary, Varun

AU - Sai Kiran Kumar Yadav, Nartu Mohan

AU - Mantri, Srinivas Aditya

AU - Dasari, Sriswaroop

AU - Jagetia, Abhinav

AU - Ramanujan, R. V.

AU - Banerjee, R.

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AB - Accelerated development of soft magnetic materials is vital for addressing the challenges associated with improving the performance of electrical machines, transformer cores, electric vehicles etc. A combinatorial assessment of the structural, magnetic and mechanical properties of Co100-xFex (x = 30 to 70) and Ni100-xFex (x = 30 to 70) alloys has been carried out on samples fabricated via laser additive manufacturing (AM). Co100-xFex showed a bcc structure in the composition range studied while Ni100-xFex exhibited either single phase fcc or a mixture of fcc and bcc phases, depending on the composition. The saturation magnetization (Ms) for both Co100-xFex and Ni100-xFex compositionally graded alloys increases monotonically with increasing Fe content while the coercivity (Hc) variation is not monotonic. The Ms value of 199.3 emu/g for Co70Fe30 increases to 248 emu/g for Co30Fe70 alloys. Ni70Fe30 exhibits a Ms of 119.8 emu/g which increases to 168.7 emu/g for Ni30Fe70. The peak hardness is 260 VHN for the Co100-xFex series and 160VHN for the Ni100-xFex series. Such AM processed graded magnetic materials can be used for accelerated experiments to discover novel materials.

KW - Additive manufacturing

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KW - Fe–Ni

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Additive manufacturing of functionally graded Co–Fe and Ni–Fe magnetic materials

Abstract

Bibliographical note

ASJC Scopus Subject Areas

Keywords

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