About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
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| Symposium
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Additive Manufacturing: Materials Design and Alloy Development VII – Design With Multi-Modal and Field Data by Integrating Uncertainty
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| Presentation Title |
Gradient Alloy Design through Multi-Material TIG-based Wire Arc Additive Manufacturing: Microstructural Control and Performance Optimization |
| Author(s) |
Ganesan Gunasekaran, Siddartha S, Narasimhan K, Karunakaran K.P. |
| On-Site Speaker (Planned) |
Ganesan Gunasekaran |
| Abstract Scope |
This study demonstrates the fabrication of functionally graded steel alloys using an in-house developed multi-wire TIG cladding system, enabling controlled transition from ferritic (ER70S-6) to austenitic (SS-304) microstructures across 11 layers. By precisely modulating wire feed rates and arc parameters, a smooth compositional gradient was achieved, verified through EBSD, XRD, and microhardness characterization. The phase evolution showed a transition from BCC to FCC phases, with peak hardness observed in the duplex regions due to strain hardening and grain refinement. This approach highlights the capability of additive manufacturing to engineer site-specific properties by controlling material composition at the voxel scale. The results support the broader vision of integrating multi-modal data for alloy design in AM, fostering rapid qualification of high-performance materials for critical applications. The method holds promise for developing structurally robust components with tailored performance in aerospace, defense, and energy sectors. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Additive Manufacturing, Phase Transformations, Mechanical Properties |