2021 TMS Special Sessions: Young Professional Tutorial Lecture
Program Organizers: TMS Administration
Tuesday 12:00 PM
March 16, 2021
Room: RM 20
Location: TMS2021 Virtual
12:00 PM
Young Professional Tutorial Lecture Introduction: Abby Cisko1; 1US Army ERDC
Young Professional Tutorial Lecture Introduction
12:05 PM
Early Career Faculty Fellow Recipient: Electrochemical Healing of Metals: A New Way to Repair Additive and Cellular Metals at Room Temperature: James Pikul1; 1University of Pennsylvania
Structural materials in biology can heal fractures at room temperature, whereas metals require elevated temperatures and large energy inputs. Manmade structural materials that could heal like bone would have several advantages, including: composite materials integrated with polymers or electronics could be repaired without damage, new design approaches that allow for increased part versatility and service life, and increased sustainability. A major challenge has been realizing structural metals that can be effectively healed autonomically near room temperature.We have recently demonstrated effective, low-energy, and room-temperature healing of polymer-coated cellular metals using electrochemistry, which mimics the transport-mediated healing of bone. Using this strategy, fractured samples recovered 100% of their tensile strength in 4 hours of healing. In this presentation, I will discuss the advantages and challenges associated with electrochemical healing of metals, share results for repairing steel and nickel samples, and present future design strategies for repairing structural metals.
12:35 PM
Early Career Faculty Fellow Recipient: Integrated Computational Materials Design for Alloy Additive Manufacturing: Wei Xiong1; 1University of Pittsburgh
Additive manufacturing, as a versatile technique, can produce complex shape components directly for engineering applications. However, it is challenging to perform a comprehensive design for additive manufacturing processes due to its unique microstructure attributes generated by the complex melting/sintering process. The Integrated Computational Materials Design method can be applied to accelerate the new alloy development and processing optimization in additive manufacturing. The method integrates multiscale microstructure engineering approaches, and especially uses the CALPHAD-based ICME approach as a guide tool, to reveal the process-structure-property relationships. Through the development of the CALPHAD-based ICME methods in the Physical Metallurgy and Materials Design Laboratory at Pitt, we are designing different types of high-performance alloys for additive manufacturing and further improving the post-processing of as-built components which are manufactured by powder-bed fusion and directed energy deposition. In turn, additive manufacturing has also been used as a tool for rapid prototyping to assist in new alloy discovery.