Discovery Early Career Researcher Award - Grant ID: DE200101105
Funder
Australian Research Council
Funding Amount
$423,856.00
Summary
Probing the nanomechanics of single grain boundary with decorated solutes. Grain boundaries (GBs) are thermodynamically susceptible to attract solutes to reduce system energy. Elaborately manipulating the GB nanostructure and chemistry via segregation can essentially be conducive, rather than detrimental, to materials performance. However, the underlying mechanism of GB segregation and its detailed effect on material properties remain elusive due to the GB complexities in the polycrystals. Throu ....Probing the nanomechanics of single grain boundary with decorated solutes. Grain boundaries (GBs) are thermodynamically susceptible to attract solutes to reduce system energy. Elaborately manipulating the GB nanostructure and chemistry via segregation can essentially be conducive, rather than detrimental, to materials performance. However, the underlying mechanism of GB segregation and its detailed effect on material properties remain elusive due to the GB complexities in the polycrystals. Through correlative in-situ nanomechanical testing and atom probe tomography, this project aims to unravel the rationale of segregation behaviour of individual GBs and its effectiveness to enhance the material performance, and hence enable nanostructural design of advanced metallic materials with unprecedented properties.Read moreRead less
Atomic-scale insights into interfaces in ultrafine-grained, low-solute alloys. This project will involve the development and application of innovative advanced microscopy methods for the study of the stability of new, ultrafine-grained alloys. This will allow the design of new alloys with exceptional properties for structural applications in environments that require ultra-high performance.
Understanding grain boundary segregation - a route to developing new advanced engineering materials. This project will investigate atomic-scale grain boundary segregation - one of the most important factors influencing the properties of engineering alloys. This will be applied in the development of new Ti, Zr and nanocrystalline alloys with a large potential market and for which Australia is extremely well positioned to become a major producer.
Quantifying the role of impurities in nanocrystalline metals. This project aims to create new designer nanocrystalline materials with applications in aerospace, transportation and medical devices through the controlled addition of impurity elements. This project will investigate and predict the fundamental role of these impurities to be able to tailor the mechanical properties to particular applications.
Interactions between linear and interfacial crystalline defects and their impact on mechanical properties in nanostructured metals and alloys. The project aims to apply in-situ deformation transmission electron microscopy to investigate the interactions among crystalline defects in nanostructured metallic materials and to explore the effect of the interactions on mechanical properties. The results will guide the structural design of nanomaterials with superior mechanical properties.
Linkage Infrastructure, Equipment And Facilities - Grant ID: LE160100089
Funder
Australian Research Council
Funding Amount
$185,000.00
Summary
A tool to observe nanoscale deformation by transmission Kikuchi diffraction. A tool to observe nanoscale deformation by transmission Kikuchi diffraction:
This project seeks to establish an advanced in-situ characterisation capability for understanding the nanoscale processes that govern the properties of materials and how microstructures change during straining. A custom-designed mechanical straining device will operate within a scanning electron microscope configured for orientation mapping wi ....A tool to observe nanoscale deformation by transmission Kikuchi diffraction. A tool to observe nanoscale deformation by transmission Kikuchi diffraction:
This project seeks to establish an advanced in-situ characterisation capability for understanding the nanoscale processes that govern the properties of materials and how microstructures change during straining. A custom-designed mechanical straining device will operate within a scanning electron microscope configured for orientation mapping with the new technique of transmission Kikuchi diffraction. The facility, which would be the first in the world, is designed to have a very high spatial structural resolution of only a few nanometres for crystal orientation mapping and can be operated at temperatures up to 400 °C. The resulting knowledge may provide guidance for the design of structural materials and materials processing with applications in aerospace, transportation and medical devices.Read moreRead less
Discovery Early Career Researcher Award - Grant ID: DE120102778
Funder
Australian Research Council
Funding Amount
$375,000.00
Summary
Enabling a new generation of advanced high-strength aluminium alloys through materials design. This project will create an analysis-engine of novel atom-sensitive methods to unlock the materials science of hierarchy-strengthening. It will assist in determining how hierarchical structures evolve and synergistically strengthen a new generation of advanced high-strength aluminium alloys that are strong as steel, but a third the weight.
Mitigating hydrogen embrittlement in high-strength steels. Hydrogen wreaks havoc in many alloys, leading to embrittlement that can cause catastrophic failure. This is a very serious issue for any industry in which structures are exposed to hydrogen and is a limiting factor for the production, transport, storage and use of hydrogen in a potential hydrogen economy. However, understanding the behaviour of hydrogen in alloys is restricted by the difficulty of observing it. In this project we will ob ....Mitigating hydrogen embrittlement in high-strength steels. Hydrogen wreaks havoc in many alloys, leading to embrittlement that can cause catastrophic failure. This is a very serious issue for any industry in which structures are exposed to hydrogen and is a limiting factor for the production, transport, storage and use of hydrogen in a potential hydrogen economy. However, understanding the behaviour of hydrogen in alloys is restricted by the difficulty of observing it. In this project we will obtain accurate 3D maps showing the position of hydrogen atoms in steel by combining deuteration with cryogenic atom probe microscopy. In this way we will will elucidate how a proposed solution, hydrogen trapping, reduces hydrogen embrittlement, contributing to design criteria for hydrogen-resistant steels.Read moreRead less
Discovery Early Career Researcher Award - Grant ID: DE170100053
Funder
Australian Research Council
Funding Amount
$375,000.00
Summary
Quantitatively probing the nanoscale plasticity of a single grain boundary. This project aims to study grain boundaries, which are important in the mechanical behaviour of nanomaterials. However, the exact contribution of individual grain boundaries to mechanical properties is not well understood, affecting advanced materials design. This project will use in-situ deformation transmission electron microscopy techniques to reveal how individual grain boundaries deform and interact with dislocation ....Quantitatively probing the nanoscale plasticity of a single grain boundary. This project aims to study grain boundaries, which are important in the mechanical behaviour of nanomaterials. However, the exact contribution of individual grain boundaries to mechanical properties is not well understood, affecting advanced materials design. This project will use in-situ deformation transmission electron microscopy techniques to reveal how individual grain boundaries deform and interact with dislocations, and to link directly the structures and orientation of individual grain boundaries with mechanical behaviours. Expected results are better structural design of advanced metallic nanomaterials with superior mechanical performance.Read moreRead less