||Advances in additive manufacturing (AM) technology have enabled design and fabrication of metal parts with complex, often previously unattainable, shapes and geometries. AM is a fast-growing manufacturing domain and its growth is partially driven by application needs. The nonequilibrium nature of the AM processes, however, introduces highly heterogeneous microstructures across multiple length scales, and thus presents a significant characterization challenge to the construction of the process-structure-performance relationship in the final product and to the certification of materials with predictable materials properties.
To meet this challenge, researchers worldwide are leveraging existing and developing new experimental capabilities enabled by the powerful synchrotron X-ray and neutron facilities. On the X-ray side, the high-flux, low-emittance, and high-energy X-rays generated by the synchrotron sources allow relatively deep penetration through high-Z materials, and make possible a range of scattering, diffraction, and imaging experiments to address many aspects of AM metals across a wide range of length and time scales. Recent progresses in neutron sources and instrumentation also bring new opportunities for AM research. The highly penetrating neutrons are routinely used to map stress in large AM parts and to gain physical insights of the mechanisms that governs the phase transformation and mechanical behaviors of AM materials.
The main objective of this symposium is to provide a forum for discussions associated with the study of the processing, structure, and properties of AM metals using the state-of-the-art X-ray and neutron characterization techniques, including modeling of synchrotron and neutron data. We believe that the extensive application of these facility-based techniques, in combination with theoretical simulations and numerical modeling, will lead to major breakthroughs in understanding the AM materials at a fundamental level within the foreseeable future, bridge the knowledge gap between academia and industry, and contribute to the development of AM technology and industrial innovation.
Abstracts are requested in, but not limited to, the following areas:
1. Time-resolved imaging and diffraction of the AM processing
2. Post-build heat treatment to establish predictable, reproducible, and certifiable microstructures
3. Texture and recrystallization of AM materials
4. Residual stress measurements and their model validation
5. Spatially resolved measurements at different length scales, including microdiffraction and microtomography
6. Phase transformation and microstructure evolution
7. Mechanical behavior characterization, including deformation, fatigue, and fracture
8. Industrial applications and industrial perspective on characterization needs
9. New experimental and analysis methods, including machine learning methods
10. Theoretical modeling and simulations of synchrotron and neutron data