Harnessing metastability for grain size control in multiprincipal element alloys during additive manufacturing
Abstract Controlling microstructure in fusion-based metal additive manufacturing (AM) remains a significant challenge due to the many parameters that directly impact solidification condition. Multiprincipal element alloys (MPEAs), also known as high entropy alloys, offer a vast compositional space t...
Saved in:
| Main Authors: | , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Nature Portfolio
2025-02-01
|
| Series: | Nature Communications |
| Online Access: | https://doi.org/10.1038/s41467-025-56616-0 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1850067503756083200 |
|---|---|
| author | Akane Wakai Jenniffer Bustillos Noah Sargent Jamesa L. Stokes Wei Xiong Timothy M. Smith Atieh Moridi |
| author_facet | Akane Wakai Jenniffer Bustillos Noah Sargent Jamesa L. Stokes Wei Xiong Timothy M. Smith Atieh Moridi |
| author_sort | Akane Wakai |
| collection | DOAJ |
| description | Abstract Controlling microstructure in fusion-based metal additive manufacturing (AM) remains a significant challenge due to the many parameters that directly impact solidification condition. Multiprincipal element alloys (MPEAs), also known as high entropy alloys, offer a vast compositional space to design for microstructural engineering due to their chemical complexity and exceptional properties. Here, we use the FeMnCoCr system as a model platform for exploring alloy design in MPEAs for AM. By exploiting the decreasing stability of the face-centered cubic phase with increasing Mn content, we achieve notable grain refinement and breakdown of epitaxial columnar grain growth. We employ a multifaceted approach encompassing thermodynamic modeling, operando synchrotron X-ray diffraction, multiscale microstructural characterization, and mechanical testing to gain insight into the solidification physics and its ramifications on the resulting microstructure of FeMnCoCr MPEAs. This work aims toward tailoring desirable grain sizes and morphology through targeted manipulation of phase stability, thereby advancing microstructure control in AM applications. |
| format | Article |
| id | doaj-art-fab722b60f1a468bb2b2b1db448bbc44 |
| institution | DOAJ |
| issn | 2041-1723 |
| language | English |
| publishDate | 2025-02-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Nature Communications |
| spelling | doaj-art-fab722b60f1a468bb2b2b1db448bbc442025-08-20T02:48:18ZengNature PortfolioNature Communications2041-17232025-02-0116111010.1038/s41467-025-56616-0Harnessing metastability for grain size control in multiprincipal element alloys during additive manufacturingAkane Wakai0Jenniffer Bustillos1Noah Sargent2Jamesa L. Stokes3Wei Xiong4Timothy M. Smith5Atieh Moridi6Department of Mechanical and Aerospace Engineering, Cornell UniversityDepartment of Mechanical and Aerospace Engineering, Cornell UniversityDepartment of Mechanical Engineering and Materials Science, University of PittsburghNASA Glenn Research CenterDepartment of Mechanical Engineering and Materials Science, University of PittsburghNASA Glenn Research CenterDepartment of Mechanical and Aerospace Engineering, Cornell UniversityAbstract Controlling microstructure in fusion-based metal additive manufacturing (AM) remains a significant challenge due to the many parameters that directly impact solidification condition. Multiprincipal element alloys (MPEAs), also known as high entropy alloys, offer a vast compositional space to design for microstructural engineering due to their chemical complexity and exceptional properties. Here, we use the FeMnCoCr system as a model platform for exploring alloy design in MPEAs for AM. By exploiting the decreasing stability of the face-centered cubic phase with increasing Mn content, we achieve notable grain refinement and breakdown of epitaxial columnar grain growth. We employ a multifaceted approach encompassing thermodynamic modeling, operando synchrotron X-ray diffraction, multiscale microstructural characterization, and mechanical testing to gain insight into the solidification physics and its ramifications on the resulting microstructure of FeMnCoCr MPEAs. This work aims toward tailoring desirable grain sizes and morphology through targeted manipulation of phase stability, thereby advancing microstructure control in AM applications.https://doi.org/10.1038/s41467-025-56616-0 |
| spellingShingle | Akane Wakai Jenniffer Bustillos Noah Sargent Jamesa L. Stokes Wei Xiong Timothy M. Smith Atieh Moridi Harnessing metastability for grain size control in multiprincipal element alloys during additive manufacturing Nature Communications |
| title | Harnessing metastability for grain size control in multiprincipal element alloys during additive manufacturing |
| title_full | Harnessing metastability for grain size control in multiprincipal element alloys during additive manufacturing |
| title_fullStr | Harnessing metastability for grain size control in multiprincipal element alloys during additive manufacturing |
| title_full_unstemmed | Harnessing metastability for grain size control in multiprincipal element alloys during additive manufacturing |
| title_short | Harnessing metastability for grain size control in multiprincipal element alloys during additive manufacturing |
| title_sort | harnessing metastability for grain size control in multiprincipal element alloys during additive manufacturing |
| url | https://doi.org/10.1038/s41467-025-56616-0 |
| work_keys_str_mv | AT akanewakai harnessingmetastabilityforgrainsizecontrolinmultiprincipalelementalloysduringadditivemanufacturing AT jennifferbustillos harnessingmetastabilityforgrainsizecontrolinmultiprincipalelementalloysduringadditivemanufacturing AT noahsargent harnessingmetastabilityforgrainsizecontrolinmultiprincipalelementalloysduringadditivemanufacturing AT jamesalstokes harnessingmetastabilityforgrainsizecontrolinmultiprincipalelementalloysduringadditivemanufacturing AT weixiong harnessingmetastabilityforgrainsizecontrolinmultiprincipalelementalloysduringadditivemanufacturing AT timothymsmith harnessingmetastabilityforgrainsizecontrolinmultiprincipalelementalloysduringadditivemanufacturing AT atiehmoridi harnessingmetastabilityforgrainsizecontrolinmultiprincipalelementalloysduringadditivemanufacturing |