Titanium Committee

Technical Programming

2021 TMS Annual Meeting & Exhibition: Advances in Titanium Technology: Organized by Don Li; Yufeng Zheng; Peeyush Nandwana; Matthew Dunstan

The symposium is proposed as the yearly signature symposium for Titanium Committee in an effort to gather the titanium experts and researchers all over the world. This symposium will address the recent advances in titanium technology and serve as an international forum for scientists, engineers, and technologists from industry, academia, and research laboratories to share latest progresses and exchange ideas on the state-of-the-art in processing-microstructure-property relationships of titanium and titanium alloys. The symposium will cover all aspects of physical and mechanical metallurgy of titanium and titanium alloys, processing techniques, product development, alloys design, microstructure exploration and performance evaluation. The topics of choice include, but are not limited to: • Titanium and titanium alloys, including near alpha alloys, alpha+beta alloys, metastable beta alloys, intermetallic alloys and titanium matrix composites • Processing of titanium and titanium alloys using advanced techniques • Phase transformations and microstructural evolution in titanium and titanium alloys • Mechanical behavior and performance of titanium and titanium alloys • Additive manufacturing of titanium and titanium alloys, especially the development of titanium alloys specific for additive manufacturing that can leverage the site-specific control afforded by various additive manufacturing technologies • Titanium alloy development toward powder-based titanium manufacturing processes with special focus on improved densification, resistance to contamination, microstructural control, and cost reduction

2021 TMS Annual Meeting & Exhibition: Practical Tools for Integration and Analysis in Materials Engineering: Organized by Adam Pilchak; Michael Gram; William Joost; Raymundo Arroyave; Charles Ward

As the principles outlined in the Materials Genome Initiative continue to take root in our field, computational tools applied to integration (establishing connections along the process-structure-property-performance continuum) and analysis (gaining insight about a specific element of the ICME framework though simulations or machine learning-based frameworks) in materials engineering proliferate. Although broadly beneficial, this has led to some redundancy of effort among researchers unaware that many of the practical tools they need may already exist. Practical computational tools ready to address day-to-day integration and analysis challenges are valuable to industry practitioners and an associated symposium could draw additional industry participants to the TMS Annual Meeting. In light of this, the objectives of this symposium are to (1) serve as a forum to present new computational tools that can be readily applied to materials integration and analysis challenges in industry, academia, and government, (2) stimulate sharing the code and data associated with each presentation through an online repository (e.g. GitHub, Materials Data Facility, etc.) so that the audience and materials community can access the tools, and (3) provide a persistent link between the presentation/ProgramMaster listing, code repository, and optional IMMI publication. Abstracts in either of the following categories are sought: • Presentation of a computational tool developed and applied to integration or analysis of materials models, experiments, and data. Presentations in this category emphasize discussion of the underlying theory and implementation of the computational tool, limits and examples of its application, and instruction for use by the audience and broader materials community. • Presentation of a new research result that employed a novel computational tool for integration or analysis of materials models, experiments, and data. Presentations in this category emphasize discussion of the research result along with details of the computational tool sufficient to give general instruction for use by the audience and the broader materials community. In all cases, presenters will be required to upload the code and data associated with their presentation to a publicly accessible repository with defined expectations on data and code discoverability, ability to be cited, and longevity (to be identified by the symposium organizers and TMS). Presenters are also encouraged to submit a paper aligned with their presentation to IMMI (https://link.springer.com/journal/40192). Presenters are encouraged to consider the use of non-traditional formats in their presentations, including (for example) combining traditional slides with demonstrations or working code or notebooks as necessary.

Materials Science & Technology 2020: Additive Manufacturing: Microstructure and Material Properties of Titanium-based Materials: Organized by Ulf Ackelid; Ola Harrysson; Peeyush Nandwana; Rongpei Shi; Yufeng Zheng

Additive Manufacturing (AM) opens new opportunities not attainable with conventional manufacturing technologies. AM involves unique processing cycles, producing microstructure and material properties that differ from those produced by conventional methods. AM continues to attract attention of professional communities including research, design, and process engineers. However, more research is still needed to fully understand the capabilities of these processes and the correlation between process conditions, process parameters, microstructure and other material properties. This symposium is a derivative of the AM symposium on microstructure and material properties held at MS&T in previous years. Titanium-based alloys are attractive for industrial use thanks to excellent properties in terms of specific strength, biocompatibility, and corrosion resistance. Titanium alloys are also expensive and challenging to machine. Thus it is not surprising that titanium attracts a strong interest within the AM community. The purpose of this symposium is to discuss AM processes and AM materials having titanium as the main constituent, with focus on the correlation between processing conditions and microstructure/material performance, in a broad perspective. We welcome contributions on all types of titanium-based materials: Unalloyed, alloys, intermetallics, composites, etc. We also welcome contributions on new innovative alloy compositions tailored for additive manufacturing.

2020 TMS Annual Meeting & Exhibition: Low-cost Titanium: 'Affordable Ti': Organized by Ramana Reddy; M. Ashraf Imam

Titanium and titanium alloys are used in many demanding applications in aerospace, automotive, biomedical and terrestrial systems because of their excellent combination of mechanical properties and corrosion resistance. However, titanium alloys are excluded from many applications because of their high cost- a result of an energy intensive extraction process and complex fabrication sequence to mill products. This is particularly true in the cost obsessed automobile industry; albeit some in-roads are now being made even into the family car. In the proposed six-session symposium, papers addressing all aspects of cost reduction in titanium and its alloys will be presented, and proceedings will be published. The various segments of titanium technology to be covered will include, but not be limited to: extraction (with emphasis on innovative and low cost Kroll approaches) new lower cost alloys, creative melting including cold hearth approaches, near net shape techniques (including powder metallurgy variants such as near net shapes, spraying, laser forming, and casting approaches), additive manufacturing, biomedical applications, processing/fabrication advances such as warm drawing, extrusion, superplastic forming (also in combination with diffusion bonding), high speed machining and knowledge based processing with emphasis on computer aided approaches, better process control including enhanced inspection methods, and creative designs such as functionally graded materials, porous alloys and infiltrated concepts.

2020 TMS Annual Meeting & Exhibition: Purveyors of Processing Science and ICME: A SMD Symposium to Honor the Many Contributions of Taylan Altan, Wei Tsu Wu, Soo-Ik Oh, and Lee Semiatin: Organized by Adam Pilchak; Ayman Salem; Viola Acoff; Nathan Levkulich; Michael Glavicic; Yufeng Zheng; John Rotella

The ability to design and repeatedly produce complex, highly durable components for demanding aerospace applications is generally taken for granted these days, but this was not always the case. Edisonian techniques and institutional knowledge were the prevailing methods to choose alloys and develop processing routes with a primary focus of form over function. Little attention was paid to material microstructure and its evolution over the course of processing, and even fewer attempts were made to model it. This all changed when a small group of scientists and engineers came together at Battelle Memorial Institute in the late 1970’s and worked on a wide range of metals processing techniques. Their early success, leveraging the momentum building in the steel industry during World War 2, stemmed from their combined expertise in mechanics, metallurgy, processing science, and computational methods. Their work was constantly advancing the state of the art and often far before the rest of the world was ready for it. For example, their team was the primary contractor for the very first Air Force Materials Lab Processing Science Program. During this program, the team developed (what we call now) a foundational engineering problem using integrated computational materials science and engineering (ICME, or "ICMSE" in some places) to optimize the process for creating a dual-microstructure/dual-property Ti-6Al-2Sn-4Zr-2Mo disk – and they did this ~25 years before the widespread adoption of ICME in our community. They were masters of understanding processes and developing practical simulations of them. They devised elegant and convincing validation experiments and paid careful attention to boundary conditions, process parameters, and material behavior under processing conditions. Their work at Battelle and that which followed when they each went their separate ways has touched every facet of metals processing including: solid, liquid, and vapor phase processes, power and wrought metallurgy, conventional and solid state joining processes, high-speed machining processes, and additive manufacturing (a decade before the current explosion of effort). Their work touched a vast array of technologically important materials including titanium and its alloys, nickel-base and cobalt-base superalloys, aluminum alloys, various intermetallics, and high entropy alloys, among others. Within these alloy systems, the honorees have contributed well over 1,000 papers to the body of literature on analytical and numerical modeling of microstructure and texture evolution and collectively advised over 200 graduate students! Their work led to the formation of a small business focused on simulating virtually every aspect of the metals processing value stream in the early 1990’s. This company continues to thrive today and is an integral part of the aerospace metals supply chain that produces flight-critical rotating components. The contributions of Taylan Altan, Wei Tsu Wu, Soo-Ik Oh, and Lee Semiatin to the field of processing science are so vast and impactful that it is the Structural Materials Division’s great pleasure to honor their lifetime of achievements at TMS 2020. Paying homage to the honorees lifelong commitment to developing and validating process models, this symposium will remain alloy-agnostic and instead keep central themes of processing, process simulation, and modeling the evolution of microstructure/texture/defects during processing. Hence, this symposium seeks papers on any metallic material system in the following areas: (1) wrought processing, (2) powder production, (3) powder processing, (4) melting and casting, (5) solid-state joining operations, (6) additive manufacturing, (7) machining operations, and (8) application of numerical methods in processing. Preference will be given to papers that combine experiment with modeling for greater insight into material behavior and also those that span more than one of the above topic areas. Invited speakers from academia and government labs will highlight the honoree’s technical breadth and depth while those from industry will highlight the impact of their work in a production environment.