PNNL

Scientists from Pacific Northwest National Laboratory (PNNL) will join peers from around the world at TMS 2024, gathering place for the global minerals, metals, and materials community. 

Featured Conference Program

Additive Manufacturing Materials in Energy Environments Symposium

TUESDAY, March 5 – WEDNESDAY, MARCH 6 

Co-organizers: Subhashish Meher, Mohan Sai Kiran Kumar Yadav Nartu, and Isabella van Rooyen

Isabella also has a personal story and advice about aiming for diversity in connection with International Women’s Day.

Towards a Future of Sustainable Production and Processing of Metals and Alloys: Sustainable Manufacturing: Solid Phase Processing and Recycling

TUESDAY, March 5, 08:00 – 11:00 A.M. ET 

Session co-organizer: Arun Devaraj 

Selected PNNL Presentations

Evaluation of Corrosion Performance of Friction Stir Processed Magnesium Alloys Using Multimodal Analysis across Length Scales

MONDAY, March 4, 10:30 – 10:55 A.M. ET 

Invited Presenter: Sridhar Niverty 

Friction Stir Processing (FSP) homogenizes and refines the microstructure through severe plastic deformation. Previous studies have demonstrated that the processed zone is more corrosion resistant compared to the base magnesium alloy. However, the corrosion behavior of the microstructure immediately adjacent to the processed zone, and how it affects the base material under corrosive environments has received little attention. 

Solid Phase Recycling of Titanium Scrap by Friction Extrusion

TUESDAY, March 5, 11:15 – 11:35 A.M. ET 

Presenter: Mageshwari Komarasamy 

Titanium scrap is highly recyclable but requires the addition of titanium sponge during vacuum arc remelting to achieve the desired properties. If the need for fresh sponge and remelting could be eliminated during recycling, then energy consumption, carbon footprint, and sustainability could be dramatically improved. 

Temperature Dependence of Helium Cavity Behavior in Ion-Irradiated Ductile-Phase-Toughened Tungsten

TUESDAY, March 5, 05:20 – 05:40 P.M. ET 

Presenter: Weilin Jiang 

Compared to brittle tungsten, ductile-phase-toughened tungsten (DPT W) composites are found to possess significantly improved mechanical properties. These materials have been investigated for potential applications in the plasma-facing components of fusion reactors. The DPT W in this study consists of W particles embedded in a ductile-phase NiFeW matrix. 

Friction Surfacing Layer Deposition of a High Entropy Alloy

WEDNESDAY, March 6, 8:30 – 9:00 A.M. ET 

Presenter: Jorge F. dos Santos 

Solid phase additive manufacturing is an emerging technology to produce parts featuring recrystallized, fine grained, isotropic microstructures, circumventing melting and solidification of the deposited material. 

Battery500 Consortium: Understanding and Addressing the Fundamental Challenges in Rechargeable Lithium Metal Batteries

WEDNESDAY, March 6, 10:10 – 10:30 A.M. ET 

Keynote Presenter: Jie Xiao 

To significantly boost the energy of the state-of-art lithium ion (Li-ion) batteries, one of the most effective approaches is to replace graphite anode with Li metal which is ultralight but energy rich. However, its thermodynamically instable nature in liquid electrolytes poses well-known challenges such as dendrite formation, which plagues the implementation of the proposed technology. This talk will discuss the fundamental challenges of utilizing Li metal anode at the cell-level. 

Real-Time Process Monitoring: Supporting Advances in Nuclear Material Processing

WEDNESDAY, March 6, 2:00 – 2:25 P.M. ET 

Presenter: Amanda Lines 

Real time and in situ monitoring of chemical composition within nuclear materials processing streams can provide unprecedented insight into process chemistry. This can facilitate significant benefits at large-scale (e.g., process control, nonproliferation efforts, and cost reductions). However, this approach can also offer a powerful route to better understand the fundamental chemistry of actinides or improve efficiency of development and testing of new actinide processing techniques. 

Atomic-Scale Understanding of the Hydrogen Embrittlement Mechanism in Model and Commercial Austenitic Steels Using Cryogenic Transfer Atom Probe Tomography

THURSDAY, March 7, 10:10 – 10:40 A.M. ET 

Invited Presenter: Li Zehao 

Friction Stir Processing (FSP) homogenizes and refines the microstructure through severe plastic deformation. Previous studies have demonstrated that the processed zone is more corrosion resistant compared to the base magnesium alloy. However, the corrosion behavior of the microstructure immediately adjacent to the processed zone, and how it affects the base material under corrosive environments has received little attention. 

Microstructural Analysis of Stainless Steel Backscatter Electron Images by Combining EBSD Data and Deep Learning

THURSDAY, March 7, 4:10 – 4:30 P.M. ET 

Invited Presenter: Julia Nguyen 

The characterization of microstructural features is essential for understanding and predicting material performance. One powerful tool for microstructural characterization is electron backscatter diffraction (EBSD), which provides quantitative information on features such as shape, size, and orientation of grains. 

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