Duplex γ/α-phase evolution of biocompatible high-nitrogen stainless steel in additive manufacturing
Addressing the escalating complexity and performance demands of stainless steels in industrial and biomedical contexts, duplex-phase high-nitrogen (N) nickel-free stainless steel (DHNAS) comprising austenitic (γ) and ferritic (α) phases represents a prospective solution. By synergistically integrati...
Saved in:
| Main Authors: | , , , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2025-09-01
|
| Series: | Journal of Materials Research and Technology |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2238785425020277 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1849225369673007104 |
|---|---|
| author | Yufeng Tao Liansheng Lin Xudong Ren Xuejiao Wang Xia Cao Yunxia Ye Erjin Zhang Heng Gu Zijie Dai |
| author_facet | Yufeng Tao Liansheng Lin Xudong Ren Xuejiao Wang Xia Cao Yunxia Ye Erjin Zhang Heng Gu Zijie Dai |
| author_sort | Yufeng Tao |
| collection | DOAJ |
| description | Addressing the escalating complexity and performance demands of stainless steels in industrial and biomedical contexts, duplex-phase high-nitrogen (N) nickel-free stainless steel (DHNAS) comprising austenitic (γ) and ferritic (α) phases represents a prospective solution. By synergistically integrating γ-phase ductility and α-phase strength via dislocation density engineering, DHNAS demonstrates exceptional adaptability for mass production or bespoke applications. However, opaque process-property relationships, microstructural inhomogeneity, and geometric constraints hinder its additive manufacturing (AM) capabilities. This work incorporates laser selective melting protocols with gas-atomized BiossN micro-powders to unravel the thermodynamic evolution of γ/α duplex-phase during the AM process. Through parameter modulation, we establish predictive phase fraction control (0.5–44.9 % γ-phase), achieve high nitrogen supersaturation (1.01 wt% via Mn alloying and N2 gas protection), and maintain exceptional biocompatibility (>99 % fibroblast viability over 14-day cytotoxicity assays). Artificial tunability of microstructured high-nitrogen γ/α duplex-phase at tight topological control promises transformative opportunities not possessed by individual ferrite or austenitic phase, allowing pre-programming mechanics (density, strength, hardness, and tensile properties) for next-generation industrial or implantable biomedical uses requiring complex geometries and multi-functions. |
| format | Article |
| id | doaj-art-e6b7e82e4d5645dcaadc92c914cbeded |
| institution | Kabale University |
| issn | 2238-7854 |
| language | English |
| publishDate | 2025-09-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Journal of Materials Research and Technology |
| spelling | doaj-art-e6b7e82e4d5645dcaadc92c914cbeded2025-08-25T04:14:28ZengElsevierJournal of Materials Research and Technology2238-78542025-09-01383199320710.1016/j.jmrt.2025.08.074Duplex γ/α-phase evolution of biocompatible high-nitrogen stainless steel in additive manufacturingYufeng Tao0Liansheng Lin1Xudong Ren2Xuejiao Wang3Xia Cao4Yunxia Ye5Erjin Zhang6Heng Gu7Zijie Dai8School of Mechanical Engineering, Jiangsu University, Zhenjiang, 212013, PR China; Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan, 430074, PR China; Corresponding author. School of Mechanical Engineering, Jiangsu University, Zhenjiang, 212013, PR China.School of Mechanical Engineering, Jiangsu University, Zhenjiang, 212013, PR ChinaSchool of Mechanical Engineering, Jiangsu University, Zhenjiang, 212013, PR ChinaSchool of Mechanical Engineering, Jiangsu University, Zhenjiang, 212013, PR China; Corresponding author.School of Pharmacy, Jiangsu University, Zhenjiang, 212013, PR ChinaSchool of Mechanical Engineering, Jiangsu University, Zhenjiang, 212013, PR ChinaSchool of Mechanical Engineering, Jiangsu University, Zhenjiang, 212013, PR ChinaSchool of Mechanical Engineering, Jiangsu University, Zhenjiang, 212013, PR ChinaSchool of Mechanical Engineering, Jiangsu University, Zhenjiang, 212013, PR ChinaAddressing the escalating complexity and performance demands of stainless steels in industrial and biomedical contexts, duplex-phase high-nitrogen (N) nickel-free stainless steel (DHNAS) comprising austenitic (γ) and ferritic (α) phases represents a prospective solution. By synergistically integrating γ-phase ductility and α-phase strength via dislocation density engineering, DHNAS demonstrates exceptional adaptability for mass production or bespoke applications. However, opaque process-property relationships, microstructural inhomogeneity, and geometric constraints hinder its additive manufacturing (AM) capabilities. This work incorporates laser selective melting protocols with gas-atomized BiossN micro-powders to unravel the thermodynamic evolution of γ/α duplex-phase during the AM process. Through parameter modulation, we establish predictive phase fraction control (0.5–44.9 % γ-phase), achieve high nitrogen supersaturation (1.01 wt% via Mn alloying and N2 gas protection), and maintain exceptional biocompatibility (>99 % fibroblast viability over 14-day cytotoxicity assays). Artificial tunability of microstructured high-nitrogen γ/α duplex-phase at tight topological control promises transformative opportunities not possessed by individual ferrite or austenitic phase, allowing pre-programming mechanics (density, strength, hardness, and tensile properties) for next-generation industrial or implantable biomedical uses requiring complex geometries and multi-functions.http://www.sciencedirect.com/science/article/pii/S2238785425020277High-nitrogen stainless steelDuplex phaselaser selective meltingBiocompatibilityMechanical properties |
| spellingShingle | Yufeng Tao Liansheng Lin Xudong Ren Xuejiao Wang Xia Cao Yunxia Ye Erjin Zhang Heng Gu Zijie Dai Duplex γ/α-phase evolution of biocompatible high-nitrogen stainless steel in additive manufacturing Journal of Materials Research and Technology High-nitrogen stainless steel Duplex phase laser selective melting Biocompatibility Mechanical properties |
| title | Duplex γ/α-phase evolution of biocompatible high-nitrogen stainless steel in additive manufacturing |
| title_full | Duplex γ/α-phase evolution of biocompatible high-nitrogen stainless steel in additive manufacturing |
| title_fullStr | Duplex γ/α-phase evolution of biocompatible high-nitrogen stainless steel in additive manufacturing |
| title_full_unstemmed | Duplex γ/α-phase evolution of biocompatible high-nitrogen stainless steel in additive manufacturing |
| title_short | Duplex γ/α-phase evolution of biocompatible high-nitrogen stainless steel in additive manufacturing |
| title_sort | duplex γ α phase evolution of biocompatible high nitrogen stainless steel in additive manufacturing |
| topic | High-nitrogen stainless steel Duplex phase laser selective melting Biocompatibility Mechanical properties |
| url | http://www.sciencedirect.com/science/article/pii/S2238785425020277 |
| work_keys_str_mv | AT yufengtao duplexgaphaseevolutionofbiocompatiblehighnitrogenstainlesssteelinadditivemanufacturing AT lianshenglin duplexgaphaseevolutionofbiocompatiblehighnitrogenstainlesssteelinadditivemanufacturing AT xudongren duplexgaphaseevolutionofbiocompatiblehighnitrogenstainlesssteelinadditivemanufacturing AT xuejiaowang duplexgaphaseevolutionofbiocompatiblehighnitrogenstainlesssteelinadditivemanufacturing AT xiacao duplexgaphaseevolutionofbiocompatiblehighnitrogenstainlesssteelinadditivemanufacturing AT yunxiaye duplexgaphaseevolutionofbiocompatiblehighnitrogenstainlesssteelinadditivemanufacturing AT erjinzhang duplexgaphaseevolutionofbiocompatiblehighnitrogenstainlesssteelinadditivemanufacturing AT henggu duplexgaphaseevolutionofbiocompatiblehighnitrogenstainlesssteelinadditivemanufacturing AT zijiedai duplexgaphaseevolutionofbiocompatiblehighnitrogenstainlesssteelinadditivemanufacturing |