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A radically new approach to laser additively manufacture metals with periodic coarse-fine grain structures for breaking the strength-ductility trade-off

Project description

Advancing 3D printing with high-performance metals

In the world of manufacturing, engineers often face the challenge of balancing strength and ductility in materials. Periodic lamellar metals (PLMs), with their unique coarse and fine-grained microstructures, offer a promising solution. These materials enhance strength and toughness, making them ideal for future engineering applications. However, despite their potential, limited research has focused on producing PLMs through selective laser melting (SLM), a cutting-edge method in Industry 4.0. Supported by the Marie Skłodowska-Curie Actions programme, the PLMsBySLM project will experiment with alloying elements and optimising microstructures. By harnessing machine learning to predict material properties, this project aims to advance 3D printing technology and produce high-performance metals with an exceptional strength-ductility balance.

Objective

Periodic lamellar metals (PLMs) with coarse-to-fine grained microstructures provides a new way to overcome the strength-ductility trade-off through the accumulation of geometrically necessary dislocations and hetero-deformation induced hardening, demonstrating great potential to future engineering applications. As an important component of Industry 4.0 selective laser melting (SLM) has become a powerful industrial tool in EU and worldwide. However, to date, few to no efforts have been devoted into the experimental investigation of PLMs made by SLM. Only one modeling work briefly discussed the strengthening and toughening mechanisms of the PLMs. Thus, the fundamental knowledge associated with the microstructures and properties of SLM PLM parts is still lacking. Such lack of critical knowledge is a hard barrier for the development of high-performance PLM engineering parts. To this end, this project proposes to adopt SLM for the fabrication of novel PLMs through adding alloying elements into starting powders. The key aspects of this proposal are as follows: 1) Design and fabrication of PLMs; 2) Microstructural tailoring and anisotropic tensile evaluation; 3) Characterization of the strengthening and toughening mechanisms; 4) Prediction of anisotropic tensile properties by machine learning. This project aims to evolve the current in-situ alloying strategy employed during SLM, enable the tailoring of heterogeneous microstructures, and provide an excellent strength-ductility balance over the homogeneous-grained counterparts. It is expected that the new knowledge generated from this project will facilitate the 3D printing of high-performance metals. This proposal involves both the transfer of knowledge to the host institution and the training of the candidate in new advanced techniques. The expected results have the potential capacity to increase the competitiveness and provide room for further studies at both the fundamental and applied levels in additive manufacturing.

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Topic(s)

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Funding Scheme

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HORIZON-TMA-MSCA-PF-EF - HORIZON TMA MSCA Postdoctoral Fellowships - European Fellowships

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Call for proposal

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(opens in new window) HORIZON-MSCA-2024-PF-01

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Coordinator

THE PROVOST, FELLOWS, FOUNDATION SCHOLARS & THE OTHER MEMBERS OF BOARD, OF THE COLLEGE OF THE HOLY & UNDIVIDED TRINITY OF QUEEN ELIZABETH NEAR DUBLIN
Net EU contribution

Net EU financial contribution. The sum of money that the participant receives, deducted by the EU contribution to its linked third party. It considers the distribution of the EU financial contribution between direct beneficiaries of the project and other types of participants, like third-party participants.

€ 268 568,64
Address
COLLEGE GREEN TRINITY COLLEGE
D02 CX56 Dublin
Ireland

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Region
Ireland Eastern and Midland Dublin
Activity type
Higher or Secondary Education Establishments
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Total cost

The total costs incurred by this organisation to participate in the project, including direct and indirect costs. This amount is a subset of the overall project budget.

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