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Meeting Materials Science & Technology 2019
Symposium Alloy Design for Additive Manufacturing: Developing New Feedstock Materials
Organizer(s) Joseph McKeown, Lawrence Livermore National Laboratory
Aurelien Perron, Lawrence Livermore National Laboratory
Manyalibo Matthews, Lawrence Livermore National Laboratory
Christian Leinenbach, Empa, Swiss Federal Laboratories for Materials Science and Technology
Peter Hosemann, University of California
Scope Until recently, the arguments favoring additive manufacturing (AM) techniques have largely been 1) the ability to build complex parts that cannot be achieved with conventional processes, 2) the reduction of the number of parts in a complex assembly to avoid issues associated with welding and joining, 3) a reduction in cost, and 4) a reduction of materials waste. In this context, alloys that have been considered have almost exclusively been those developed for standard manufacturing processes, such as conventional steels (i.e., 316L stainless steel), aluminum alloys such those based on Al-Cu-Mg-Sc-Si, Ni-Cr–based superalloys (Inconel 718/625), and titanium alloys (largely Ti-6Al-4V). Challenges associated with achieving controllable microstructures and properties in these technically relevant alloys leads to a pertinent question: Is there a need to develop new materials feedstocks that are better suited to take advantage of AM processes and their parameters? It is anticipated that growth in materials diversity will soon drive the progress of AM. New alloys for structural and biomedical applications, high-strength and high-radiation-resistant alloys, and hierarchically graded materials, among others, have begun to generate interest.

This symposium will highlight recent advances in the design and optimization of new alloy feedstock materials for AM. Presentations are sought that illustrate paths toward broadening the design space to include new, innovative materials, including but not limited to:

* Experiments that explore a broader alloy design space, including powder development and microstructural assessments
* Combinatorial experimental approaches for materials design and optimization
* Computational methods for design of alloys with improved properties
* Experiments and simulations that aid in understanding the role of physical properties on alloy design
* Advanced characterization techniques that provide insight for materials design
Abstracts Due 04/05/2019
Proceedings Plan Planned: Post-meeting proceedings

Additive manufacturing of steels – alloy development aided by computational materials design
Alloy Design and Development for AM: Opportunities and Challenges
Alloy design for additive manufacturing: Development and application of a Materials Design Simulator
Characterization of Vacuum Roll Coating Engineered Ti-6Al-4V Platelets for Metals Additive Manufacturing
Controlling in situ reactions during laser powder bed fusion – A Ti + Mo2C case study
Developing Feedstock Powder for Laser Consolidation of Aluminum Metal Matrix Composites
Discerning the impact of powder feedstock variability on structure, property and performance of selective laser melted Alloy 718
Effect of trace Y addition on the microstructure and mechanical properties of the as-cast Ti-6Al-4V alloys
ICME-based evaluation and optimization of additively manufactured high toughness naval steels
Improving the sintering behavior of aluminum powders by polydopamine assisted introduction of copper nanoparticles
In-situ Microstructural Evolution of Rapidly Solidified Aluminum Alloys
Microsegregation-based indicators of in-build cracking susceptibility under repetitive melting conditions
Microstructures and meta-structures: exerting control across the length scales in Additive Manufacture
Multiscale characterizations of the microstructure and mechanical properties of metallic alloys made by laser powder bed fusion
Novel In-situ Characterization of Solidification Dynamics Relevant for Additive Manufacturing
Parametric study of melt pool dynamics and microstructure of WE43 processed by laser powder bed fusion
Processability and Properties of an innovative AlSi10Mg+Cu alloy for Laser Powder Bed Fusion
The Next Generation of NiTi-based Shape Memory Alloys: Developed for Additive Manufacturing

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