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Simulation and Modelling of Interactions between Dislocations and Precipitates in High Strength Light Alloys. Most light alloys are strengthened by highly dispersed nanoscale precipitates. The mechanical behaviour of these alloys is determined by the intimate coupling between precipitate microstructure (size, shape and spatial distribution) and dislocation activities (by-pass, shearing and adsorption at interfaces). By integrating state-of-the-art experimental characterization and computer simul ....Simulation and Modelling of Interactions between Dislocations and Precipitates in High Strength Light Alloys. Most light alloys are strengthened by highly dispersed nanoscale precipitates. The mechanical behaviour of these alloys is determined by the intimate coupling between precipitate microstructure (size, shape and spatial distribution) and dislocation activities (by-pass, shearing and adsorption at interfaces). By integrating state-of-the-art experimental characterization and computer simulation techniques, this project aims to reveal detailed and accurate deformation mechanisms in these alloys. The knowledge gained and models developed are expected to provide guidelines to the optimization of existing alloys and design of new alloys, which is expected to create substantial wealth for Australia.Read moreRead less
Nanostructured Al Alloys: SPD Processing and Properties. The use of conventional Al alloys in automotive and airspace industries is often restricted by their low room temperature strength. Development of high strength Al alloys which could replace much more expensive Ti alloys or heavier steel in constructions is a very promising way to reduce structural weight and cost. Using the Severe Plastic Deformation (SPD) technique, namely high pressure torsion and equal-channel angular extrusion, we ai ....Nanostructured Al Alloys: SPD Processing and Properties. The use of conventional Al alloys in automotive and airspace industries is often restricted by their low room temperature strength. Development of high strength Al alloys which could replace much more expensive Ti alloys or heavier steel in constructions is a very promising way to reduce structural weight and cost. Using the Severe Plastic Deformation (SPD) technique, namely high pressure torsion and equal-channel angular extrusion, we aim to develop a new method for production of bulk nanostructured Al alloy with high room temperature strength for automotive and airspace applications.
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CHARACTERISATION OF DIE CAST MAGNESIUM ALLOYS FOR AUTOMOTIVE POWER TRAIN COMPONENTS. A new group of magnesium die casting alloys has recently been developed for fabricating automotive power train components. While these alloys exhibit good tensile yield strength at both ambient and elevated (100-200°C) temperatures, they are prone to excessive creep deformation when exposed to moderate levels of loads at temperatures above 125°C. The aim of this project is to characterise microstructures of th ....CHARACTERISATION OF DIE CAST MAGNESIUM ALLOYS FOR AUTOMOTIVE POWER TRAIN COMPONENTS. A new group of magnesium die casting alloys has recently been developed for fabricating automotive power train components. While these alloys exhibit good tensile yield strength at both ambient and elevated (100-200°C) temperatures, they are prone to excessive creep deformation when exposed to moderate levels of loads at temperatures above 125°C. The aim of this project is to characterise microstructures of these alloys subjected to controlled levels of creep deformation in the temperature and stress regime of interests, with a view to identifying microstructural factors that are important in determining the creep resistance of die cast magnesium alloys. The outcome of this project will provide useful guidelines for further improvements in creep resistance of these alloys and development of new die cast alloys with higher creep resistance at elevated temperatures.Read moreRead less
Development of a Superplastic Forming Capabilities in Magnesium-Based Alloys through Processing using Severe Plastic Deformation. This research will provide a basis for advancing the structural use of magnesium alloys in the building and transportation industries. It is anticipated the project will lower the cost of producing lightweight structures and extend the range of alloys that can be used in such applications. With the growing magnesium industry in Australia, and with the potential for Au ....Development of a Superplastic Forming Capabilities in Magnesium-Based Alloys through Processing using Severe Plastic Deformation. This research will provide a basis for advancing the structural use of magnesium alloys in the building and transportation industries. It is anticipated the project will lower the cost of producing lightweight structures and extend the range of alloys that can be used in such applications. With the growing magnesium industry in Australia, and with the potential for Australia to become a major world supplier of magnesium, the development of advanced processing technology for magnesium-based alloys is of national importance. The project will play a vital role in strengthening the Australian technological position and increasing the opportunities for professional Australians.Read moreRead less
ENHANCED PERFORMANCE OF AUTOMOTIVE SHEET ALLOYS VIA CONTROL OF COMPOSITION, THERMAL PROCESSING AND NANOSTRUCTURE. This project involves characterisation using modern facilities of the form and identity of atomic-scale clusters of alloying elements in selected automotive sheet alloys that have been subjected to single and multiple ageing treatments and examination and modelling of deformation mechanisms and behaviour in such alloys. The aim is to establish the precise role of clusters of solute a ....ENHANCED PERFORMANCE OF AUTOMOTIVE SHEET ALLOYS VIA CONTROL OF COMPOSITION, THERMAL PROCESSING AND NANOSTRUCTURE. This project involves characterisation using modern facilities of the form and identity of atomic-scale clusters of alloying elements in selected automotive sheet alloys that have been subjected to single and multiple ageing treatments and examination and modelling of deformation mechanisms and behaviour in such alloys. The aim is to establish the precise role of clusters of solute atoms and vacancies in the formation of precipitate phases that control the final strength and deformation behaviour of the alloys, and to provide useful guidelines for further improvements in strength of these alloys via the control of alloy composition and of multiple ageing treatments.Read moreRead less
Modelling of Nanostructuring of Bulk Metallic Materials by Severe Plastic Deformation. The use of ultrafine grained alloys is expected to lead to significant breakthroughs in relation to fuel-efficient cars, light weight/high strength designs in aerospace and structural applications, and bio-medical implants. It will provide a wider market for such metals and create niche applications in domestic and export manufacturing industry. The development of technologically viable processes of nanostruct ....Modelling of Nanostructuring of Bulk Metallic Materials by Severe Plastic Deformation. The use of ultrafine grained alloys is expected to lead to significant breakthroughs in relation to fuel-efficient cars, light weight/high strength designs in aerospace and structural applications, and bio-medical implants. It will provide a wider market for such metals and create niche applications in domestic and export manufacturing industry. The development of technologically viable processes of nanostructuring hinges on the fundamental understanding of the fundamental mechanisms of microstructure and texture development. The knowledge base to be developed through this project will bring Australia to the international forefront in the area of structural nanomaterials and prepare the ground for future frontier technologies. Read moreRead less
Ductile Bulk Metallic Glass Composites. Structural materials are the basic building blocks of modern society, even a small advancement can have a strong impact on our society. The properties of steel have been pushed close to the limit. The development of bulk metallic glasses (BMGs) offers the opportunity to revolutionize the field of structural materials with strengths 3 or 4 time that of steel. The proposed project, aims to overcome the major technical barrier for BMGs of insufficient ductili ....Ductile Bulk Metallic Glass Composites. Structural materials are the basic building blocks of modern society, even a small advancement can have a strong impact on our society. The properties of steel have been pushed close to the limit. The development of bulk metallic glasses (BMGs) offers the opportunity to revolutionize the field of structural materials with strengths 3 or 4 time that of steel. The proposed project, aims to overcome the major technical barrier for BMGs of insufficient ductility. The development of ductile and high strength BMGs, will position Australia and its researchers at the forefront of this exciting material innovation. The project will develop and strengthen Australia's international research linkages with overseas centres of excellence.Read moreRead less
Mechanisms for Improved Ductility of Magnesium Alloys. The work will lead to more ductile magnesium alloys. These alloys will be more readily formed into automotive components. The lighter cars that will result will be cheaper to run and more environmentally friendly. The exchange of key researchers that will occur under this proposal will provide an exciting injection of expertise into the partner organisations from which students will greatly benefit. The work will also open up access to state ....Mechanisms for Improved Ductility of Magnesium Alloys. The work will lead to more ductile magnesium alloys. These alloys will be more readily formed into automotive components. The lighter cars that will result will be cheaper to run and more environmentally friendly. The exchange of key researchers that will occur under this proposal will provide an exciting injection of expertise into the partner organisations from which students will greatly benefit. The work will also open up access to state-of-the-art equipment in the collaborating laboratories.Read moreRead less