About this Abstract |
Meeting |
2022 TMS Annual Meeting & Exhibition
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Symposium
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Additive Manufacturing: Nano/Micro-mechanics and Length-scale Phenomena
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Presentation Title |
Strategies for Functional Grading Using Additive Manufacturing |
Author(s) |
Moataz M. Attallah |
On-Site Speaker (Planned) |
Moataz M. Attallah |
Abstract Scope |
This talk focuses on the different strategies for functional grading using additive manufacturing and their influence on the mechanical properties. Different approaches for functional grading will be presented, including using lattice structures with variable porosity content, microstructural grading using process parameters control, and finally chemical grading through changing the alloy content along the build height. Functionally graded lattices were tailored to control the elastic modulus and the mechanical deformation behaviour. Digital Image Correlation measurements showed that functionally-graded lattices deform in an inwards fashion, whereas uniform lattices deform through generating a 45˚ deformation band. The talk also explores the use of laser scan strategy and process parameters in controlling the grain structure from uniform (columnar or equiaxed) into functionally graded grain structure in Ni-superalloys through controlling the solidification kinetics. Finally, chemical grading through the use of in-situ alloying will be presented, highlighting the potential opportunities and impact on the build performance.
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Proceedings Inclusion? |
Planned: |
Keywords |
Additive Manufacturing, Characterization, Mechanical Properties |