Abstract

Highlights Powder-mixed Ti-35Nb alloy produced by LPBF breaks through the strength-ductility trade-off. The ultimate strength, uniform elongation and Young’s modulus of heterostructured Ti-35Nb alloy are (806 ± 7) MPa, (18.0 ± 1.1)%, and (68 ± 6) GPa, respectively. In-situ laser re-melting improves elemental distribution uniformity in LPBF-produced powder-mixed Ti-xNb alloys. Optimized Nb content induces the phase transformation of β + α′ → β + ω in Ti-xNb alloy. Heterostructured β + ω/β enhances the strength-ductility synergy of Ti-35Nb alloy.

Document Type

Journal Article

Date of Publication

12-1-2025

Volume

7

Issue

6

Funding Information

National Natural Science Foundation of China (92166112, 52373236, 52271132) / Natural Science Foundation of Guangdong Province (2024A1515010658) / Guangdong Province International Science and Technology Cooperation Project (2023A0505050103) / Guangxi Key Laboratory of Information Materials (231033-K) / Open Project Program of Wuhan National Laboratory for Optoelectronics (2021WNLOKF010) / Guangzhou Science and Technology Planning Project (2024A04J9966) / Guangdong Provincial Science and Technology Plan Project (2022A0505050043) / ECU Industrial Grant (G1006320) / ECU DVC Strategic Research Fund (23965)

School

Centre for Advanced Materials and Manufacturing / School of Engineering

Creative Commons License

Creative Commons Attribution 4.0 License
This work is licensed under a Creative Commons Attribution 4.0 License.

Publisher

IOP

Identifier

Lai Chang Zhang: https://orcid.org/0000-0003-0661-2051

Comments

Jin, J., Zhou, S., Yang, H., Yang, J., Zhang, Z., Guo, B., & Zhang, L. (2025). Breaking through the strength-ductility trade-off of LPBF-produced Ti-xNb alloys from mixed powders via ω-phase induced heterostructure. International Journal of Extreme Manufacturing, 7, 065003. https://doi.org/10.1088/2631-7990/aded4e

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