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Multi-property materials discovery from additively manufactured compositionally graded Fe-Ni-Si alloys.

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Title: Multi-property materials discovery from additively manufactured compositionally graded Fe-Ni-Si alloys.
Authors: Teh, Wei Hock1 (AUTHOR), Tan, Li Ping1,2 (AUTHOR), Chen, Shilin1 (AUTHOR), Lee, Coryl Jing Jun1 (AUTHOR), Wei, Fengxia1,3 (AUTHOR), Padhy, Shakti P.2 (AUTHOR), Chaudhary, V.1,2,4 (AUTHOR) varunc@chalmers.se, Tan, Cheng Cheh1 (AUTHOR) dennis-tan@imre.a-star.edu.sg, Ramanujan, R.V.1,2 (AUTHOR) Ramanujan@ntu.edu.sg
Source: Acta Materialia. Jan2026, Vol. 302, pN.PAG-N.PAG. 1p.
Subjects: Magnetic alloys, Ternary alloys, Selective laser sintering, Mechanical behavior of materials, Functionally gradient materials
Abstract: There is an urgent demand for novel magnetic alloys with excellent functional and mechanical properties for next generation, high frequency, large torque, rotating electric machine applications. Binary Fe-Si alloys are low cost and exhibit attractive magnetic and electrical properties. However, high Si content Fe-Si alloys are brittle. Binary Fe-Ni alloys also possess good magnetic properties. It is hypothesized that certain ternary Fe-Ni-Si alloy compositions can possess an attractive blend of properties. Samples containing a range of Fe-Ni-Si alloy compositions were produced by directed energy deposition based additive manufacturing. These compositionally graded pillar samples were studied by rapid characterization and property evaluation techniques. Across the explored ternary space (of up to 40 wt% Ni and 10 wt% Si), we observed a wide range of properties, with some compositions achieving high hardness (∼600 HV), electrical resistivity of up to 255 µΩ·cm, and saturation magnetization of up to 200 emu/g, while coercivity ranged from ∼13 to ∼216 Oe. Fe-11.5Ni-2.7Si was identified as a novel promising composition and validation experiments were conducted to verify its properties. This work has successfully identified an additively manufactured Fe-Ni-Si alloy composition with promising functional as well as mechanical properties. [Display omitted] [ABSTRACT FROM AUTHOR]
Copyright of Acta Materialia is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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DbLabel: Engineering Source
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  Data: Multi-property materials discovery from additively manufactured compositionally graded Fe-Ni-Si alloys.
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  Data: <searchLink fieldCode="AR" term="%22Teh%2C+Wei+Hock%22">Teh, Wei Hock</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Tan%2C+Li+Ping%22">Tan, Li Ping</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Chen%2C+Shilin%22">Chen, Shilin</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Lee%2C+Coryl+Jing+Jun%22">Lee, Coryl Jing Jun</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Wei%2C+Fengxia%22">Wei, Fengxia</searchLink><relatesTo>1,3</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Padhy%2C+Shakti+P%2E%22">Padhy, Shakti P.</searchLink><relatesTo>2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Chaudhary%2C+V%2E%22">Chaudhary, V.</searchLink><relatesTo>1,2,4</relatesTo> (AUTHOR)<i> varunc@chalmers.se</i><br /><searchLink fieldCode="AR" term="%22Tan%2C+Cheng+Cheh%22">Tan, Cheng Cheh</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> dennis-tan@imre.a-star.edu.sg</i><br /><searchLink fieldCode="AR" term="%22Ramanujan%2C+R%2EV%2E%22">Ramanujan, R.V.</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<i> Ramanujan@ntu.edu.sg</i>
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  Data: <searchLink fieldCode="JN" term="%22Acta+Materialia%22">Acta Materialia</searchLink>. Jan2026, Vol. 302, pN.PAG-N.PAG. 1p.
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  Data: <searchLink fieldCode="DE" term="%22Magnetic+alloys%22">Magnetic alloys</searchLink><br /><searchLink fieldCode="DE" term="%22Ternary+alloys%22">Ternary alloys</searchLink><br /><searchLink fieldCode="DE" term="%22Selective+laser+sintering%22">Selective laser sintering</searchLink><br /><searchLink fieldCode="DE" term="%22Mechanical+behavior+of+materials%22">Mechanical behavior of materials</searchLink><br /><searchLink fieldCode="DE" term="%22Functionally+gradient+materials%22">Functionally gradient materials</searchLink>
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  Label: Abstract
  Group: Ab
  Data: There is an urgent demand for novel magnetic alloys with excellent functional and mechanical properties for next generation, high frequency, large torque, rotating electric machine applications. Binary Fe-Si alloys are low cost and exhibit attractive magnetic and electrical properties. However, high Si content Fe-Si alloys are brittle. Binary Fe-Ni alloys also possess good magnetic properties. It is hypothesized that certain ternary Fe-Ni-Si alloy compositions can possess an attractive blend of properties. Samples containing a range of Fe-Ni-Si alloy compositions were produced by directed energy deposition based additive manufacturing. These compositionally graded pillar samples were studied by rapid characterization and property evaluation techniques. Across the explored ternary space (of up to 40 wt% Ni and 10 wt% Si), we observed a wide range of properties, with some compositions achieving high hardness (∼600 HV), electrical resistivity of up to 255 µΩ·cm, and saturation magnetization of up to 200 emu/g, while coercivity ranged from ∼13 to ∼216 Oe. Fe-11.5Ni-2.7Si was identified as a novel promising composition and validation experiments were conducted to verify its properties. This work has successfully identified an additively manufactured Fe-Ni-Si alloy composition with promising functional as well as mechanical properties. [Display omitted] [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Acta Materialia is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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        Value: 10.1016/j.actamat.2025.121625
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      – Code: eng
        Text: English
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        StartPage: N.PAG
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      – SubjectFull: Magnetic alloys
        Type: general
      – SubjectFull: Ternary alloys
        Type: general
      – SubjectFull: Selective laser sintering
        Type: general
      – SubjectFull: Mechanical behavior of materials
        Type: general
      – SubjectFull: Functionally gradient materials
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    Titles:
      – TitleFull: Multi-property materials discovery from additively manufactured compositionally graded Fe-Ni-Si alloys.
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            NameFull: Teh, Wei Hock
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            NameFull: Tan, Li Ping
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            – D: 01
              M: 01
              Text: Jan2026
              Type: published
              Y: 2026
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