Karen Kruska | Environmental Molecular Sciences Laboratory

Elucidating chemical and structural changes of materials in extreme environments

Lead Institution

Pacific Northwest National Laboratory

Principal Investigator

Kayla Yano

Project type

Contracted Time

This proposal aims to elucidate atomic- to nanoscale fundamental mechanisms driving the evolution of materials in the extreme environments of energy production. Energy generating systems often…

Characterizing the structural and chemical evolution of materials exposed to extreme environments

Lead Institution

Pacific Northwest National Laboratory

Principal Investigator

Kayla Yano

The objective of this proposal is to illuminate atomic- to nanoscale mechanisms driving the fundamental evolution of materials in extreme environments relevant to energy production. Energy generating…

Advanced microstructural analyses of materials degradation and atomic transport in extreme environments

Lead Institution

Pacific Northwest National Laboratory

Principal Investigator

Daniel Schreiber

Environmental degradation is a major problem in high-temperature water environments such as those found in nuclear reactors and other forms of steam generator and high-temperature turbine…

Mechanistic Insights into Stress Corrosion Cracking through Fundamental Studies of Selective Oxidation Mechanisms

Lead Institution

Pacific Northwest National Laboratory

Principal Investigator

Daniel Schreiber

Materials degradation and failure in hostile environments are critical issues affecting current and future generations of power generation systems. In this research, we seek to elucidate the…

An Experimental and Modeling Investigation of Solidification and Microstructural Evolution in Magnesium Alloys using in situ Techniques

Lead Institution

Pacific Northwest National Laboratory

Principal Investigator

Aashish Rohatgi

The goal of this proposal is to understand the microstructural evolution during non-equilibrium, rapid solidification of a molten magnesium-aluminum-zinc (AZ91) alloy, and during its subsequent heat…

Non-Linear Ultrasonic Testing and Microstructural-based Modeling towards the Development of Prognostic Damage Maps for Reactor Structural Materials

Lead Institution

Pacific Northwest National Laboratory

Principal Investigator

Karen Kruska

We suggest using atom-probe tomography (APT) to study the cluster size and density distribution of Cu clusters in Fe-1Cu alloys after thermal ageing. Transmission Electron Microscopy (TEM) will be…

An Experimental and Modeling Investigation of Solidification and Microstructural Evolution in Magnesium Alloys using in situ Techniques

Lead Institution

Pacific Northwest National Laboratory

Principal Investigator

Aashish Rohatgi

The goal of this proposal is to understand the microstructural evolution during non-equilibrium, rapid solidification of a molten magnesium-aluminum-zinc (AZ91) alloy, and during its subsequent heat…

Mechanistic Insights into Stress Corrosion Cracking through Fundamental Studies of Selective Oxidation Mechanisms

Lead Institution

Pacific Northwest National Laboratory

Principal Investigator

Daniel Schreiber

Materials degradation and failure in hostile environments are critical issues affecting current and future generations of power generation systems. In this research, we seek to elucidate the…

JCESR - In Situ and Ex Situ Studies of Energy Storage Materials

Lead Institution

University of Liverpool

Principal Investigator

Nigel Browning

Innovation of energy storage technology depends critically on the fundamental understanding of the operating mechanism and dynamic interaction across different components in the storage unit. With…

Characterization of Irradiation and Environmental Effects in Metallic and Ceramic Materials

Lead Institution

Pacific Northwest National Laboratory

Principal Investigator

Danny Edwards

This proposed work aims to provide samples from archive materials and highly radioactive materials to document the changes in metals and ceramics that have been subjected to neutron and/or ion…

Atom Probe Tomography of Structural Materials for Nuclear Reactors

Lead Institution

Pacific Northwest National Laboratory

Principal Investigator

Danny Edwards

As the world’s population continues to increase, carbon neutral energy resources like nuclear power become increasingly important. A major challenge facing the design of advanced nuclear power…

Defect Production, Diffusion and Precipitation in Ion-Implanted Ceria

Lead Institution

Pacific Northwest National Laboratory

Principal Investigator

Karen Kruska

We suggest using TEM-EDS to study the changes a simulated nuclear fuel (pulsed-laser deposited doped CeO2 films) undergoes during I ion irradiation at temperatures relevant to a nuclear reactor. FIB…

An Experimental and Modeling Investigation of Solidification and Microstructural Evolution in Magnesium Alloys using in situ Techniques

Lead Institution

Pacific Northwest National Laboratory

Principal Investigator

Aashish Rohatgi

The goal of this proposal is to understand the microstructural evolution during non-equilibrium, rapid solidification of a molten magnesium-aluminum-zinc (AZ91) alloy, and during its subsequent heat…

Investigation of Ion Exchange and Its Impact on Radionuclide Release and Surface Reactivity in Glass Waste Forms

Lead Institution

Pacific Northwest National Laboratory

Principal Investigator

Charmayne Lonergan

Due to the long lifetimes of radionuclide species found in nuclear waste, the vitrified waste forms need to retain all hazardous species for thousands of years. With the current inability to…

Investigation of Thermal Aging Effects on the Evolution of Microstructure and
Mechanical Properties of Cast Duplex Stainless Steels

Lead Institution

Environmental Molecular Sciences Laboratory

Principal Investigator

Daniel Perea

This proposal spans a collaboration between EMSL and the University of Maryland under a Nuclear Energy University Program grant. The objectives of the proposed research project are to (1) develop a…

Thermal Aging Degradation Mechanisms

Lead Institution

Oak Ridge National Laboratory

Principal Investigator

Timothy Lach

The objective of this research is to continue the investigation on the microstructural and chemical evolution of cast stainless steels subjected to accelerated thermal aging conditions relevant to…

Atom Probe Tomography of Structural Materials for Nuclear Reactors

Lead Institution

Pacific Northwest National Laboratory

Principal Investigator

Danny Edwards

A major challenge facing the design of advanced nuclear power systems lies in finding appropriate materials that demonstrate the needed material properties as well as radiation and high temperature…

Mechanistic Insights into Stress Corrosion Cracking through Fundamental Studies of Selective Oxidation Mechanisms

Lead Institution

Pacific Northwest National Laboratory

Principal Investigator

Karen Kruska

Materials degradation and failure in hostile environments are critical issues affecting current and future generations of power generation systems. In this research, we seek to elucidate the…

Characterization of Irradiation Effects in Metallic Alloys for Fusion and Fission Reactors

Lead Institution

Pacific Northwest National Laboratory

Principal Investigator

Danny Edwards

The structural components of nuclear reactors encompasses a wide variety of various materials, including austenitic stainless steels, ferritic alloys, and zirconium alloys. The microstructural and…

Unravelling atomic-scale mechanisms influencing metal degradation in corrosion and irradiation environments

Lead Institution

Pacific Northwest National Laboratory

Principal Investigator

Daniel Schreiber

A multitude of extreme and harsh conditions exist simultaneously within nuclear reactors, including irradiation, high temperatures, stress, and corrosive conditions that act together to degrade…

Meso-scale Magnetic Signatures for Nuclear Reactor Steel Irradiation Embrittlement Monitoring

Lead Institution

Pacific Northwest National Laboratory

Principal Investigator

Jonathan Suter

This project is funded by the Office of Nuclear Energy under the Enabling Technologies program. Verifying the structural integrity of passive components in light-water and advanced reactors will be…

Resolving the structural and chemical evolution in materials exposed to extreme environments at the nano-scale

Lead Institution

Pacific Northwest National Laboratory

Principal Investigator

Sandra Taylor

The objective of this work is to elucidate atomic- to nano-scale mechanisms driving the evolution of materials in extreme environments, relevant to energy applications. Current understanding of the…

Characterization of Novel Rapidly Solidified and Nanostructured Alloys

Lead Institution

Pacific Northwest National Laboratory

Principal Investigator

Nicole Overman

The goal of this proposal is to to develop robust synthesis strategies for producing nanocomposite particle or flake precursors with far-from-equilibrium compositions and nanostructured features…

Resolving the structural and chemical evolution in materials exposed to extreme environments at the nano-scale

Lead Institution

Pacific Northwest National Laboratory

Principal Investigator

Karen Kruska

The objective of this proposal is to elucidate atomic- to nanoscale mechanisms driving the evolution of materials in extreme environments relevant to energy applications. In energy generating systems…

An Experimental and Modeling Investigation of Solidification and Microstructural Evolution in Magnesium Alloys using in situ Techniques

Lead Institution

Pacific Northwest National Laboratory

Principal Investigator

Aashish Rohatgi

The goal of this proposal is to understand the microstructural evolution during non-equilibrium, rapid solidification of a molten magnesium-aluminum-zinc (AZ91) alloy, and during its subsequent heat…

Developing Data Analytical Tools to Map Crystalline Defects from APT 3D Compositional Point Cloud Maps

Lead Institution

Environmental Molecular Sciences Laboratory

Principal Investigator

Daniel Perea

The atom-by-atom 3D point cloud composition mapping produced by Atom Probe Tomography (APT) provides the potential to directly measure nanocrystalline structure and identify specific lattice defects,…

Characterization of Novel Rapidly Solidified and Nanostructured Alloys

Lead Institution

Pacific Northwest National Laboratory

Principal Investigator

Nicole Overman

The goal of this proposal is to further develop robust synthesis strategies for producing nanocomposite particle or flake precursors with far-from-equilibrium compositions and nanostructured features…

Resolving the structural and chemical evolution in materials exposed to extreme environments at the nano-scale

Lead Institution

Pacific Northwest National Laboratory

Principal Investigator

Karen Kruska

The objective of this proposal is to elucidate atomic- to nanoscale mechanisms driving the evolution of materials in extreme environments relevant to energy applications. In energy generating systems…

Precursor Evolution and SCC Initiation of Cold-Worked Alloy 690 in Simulated PWR Primary Water

Lead Institution

Pacific Northwest National Laboratory

Principal Investigator

Karen Kruska

We suggest to use FIB/SEM sequential milling either manually or with the slice and view application to study stress corrosion cracking (SCC) precursors in cold-worked Alloy 690 specimens. Although to…

Characterization of Irradiation Effects in Metallic Alloys for Fusion and Fission Reactors

Lead Institution

Pacific Northwest National Laboratory

Principal Investigator

Danny Edwards

Structural materials used in current light water reactors and future fusion reactors all face a common problem: radiation induced changes at the nanometer level that require advanced…

Atom Probe Tomography of Structural Materials for Nuclear Reactors

Lead Institution

Pacific Northwest National Laboratory

Principal Investigator

Danny Edwards

To develop an understanding of material performance under neutron irradiation requires detailed knowledge of the evolution of the materials microstructure both before and after irradiation. The…

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