To achieve the UK zero carbon emission target by 2050, alternative energy generation with zero CO2 emission, such as wind, solar, and nuclear energy, is now the target of urgent development to completely replace the use of fossil fuels such as coal, oil, and natural gas. However, the widely used nuclear fission reactors have many issues, for example, the difficulty of nuclear waste treatment and storage and the risk of uncontrolled chain reactions. On the other hand, nuclear fusion energy has many potential advantages, for example, four times higher energy than fission, abundant hydrogen and its isotopes as the fuel, and the short lifespan of the radioactive waste products. However, the development of fusion reactors puts a high demand on materials, as these must withstand high energy levels, high transmutation rates, high temperatures, and high thermomechanical stresses. This brings major material design challenges and requires the design and development of superior materials, along with innovative, facile, manufacturing routes, especially for the first wall structures and breeder blanket of fusion reactors. The structure is not only irradiated by the plasma but also undergoes neutron bombardment from the plasma, as well as high loadings of helium and hydrogen, which causes serious damage to the structural materials. Currently, one of the potential materials designed for the first wall and blanket structures on the fusion reactors is the reduced activation ferritic/martensitic (RAFM) steels, due to the superior thermal conductivity, relatively low thermal expansion, and resistance to radiation-induced swelling and helium embrittlement, as well as the easy commercial process, compared to other materials. However, the properties of these RAFM steels restrict their maximum operating temperature to only 550C, which is much lower than the service temperature of 650C. Moreover, irradiation induces the hardening of these steels at lower service temperatures (250-350C) and embrittlement at high temperatures (450-550C), which also restricted their application. Thus, the 3rd generation oxide dispersion strengthened (ODS) RAFM steels have been developed through nanoparticle and ultra-fine grains, which successfully increase the operating temperature to 650C. However, the limitation of the ODS RAFM steels is the obvious difficulty in powder manufacturing at a sufficient scale to be used in the first wall and blanket structures in fusion reactors. ODS steels also have a problem with a high ductile to the brittle transition temperature. This severely limits their applicability. Thus, there is still an urgent need to develop new RAFM steels for the structure materials on fusion reactors with a service temperature of 650C and easy manufacturing to various scales and structures. In this project, according to ODS RAFM steels, the guiding principles of a fine structure and a high-temperature stable precipitate phase will be used to design new, processable, RAFM steels. For example, the intermetallic precipitates and carbonitrides, which have a lower coarsening rate than carbides at high temperatures, will be the target precipitates; these can be achieved through alloy design with corresponding heat treatment. Moreover, grain refinement can be achieved through the modification of the manufacturing process, for example, by using ausforming, which will produce an extremely high dislocation density. Subsequently, during heat treatment, these dislocations will form nanoscale subgrains through recovery and recrystallization. Thus, the ultimate goal of the research will be to produce new RAFM steels for supply to the spherical tokamak (STEP). This requires advances to allow materials selection between 2023 to 2025 and provision to produce net electricity from fusion in 2040. It will also support the UK to be the world leader in fusion materials design and develop this prominent position through cutting-edge research on groundbreaking material systems

SUSTAIN is an ambitious collaborative research project led by the National Steel Innovation Centre at Swansea University to transform the productivity, product diversity and environmental performance of the steel supply chain in the UK. Working with Warwick Manufacturing Group and the University of Sheffield, the SUSTAIN Manufacturing Hub will lead grand challenge research projects of carbon neutral steel and ironmaking and smart steel processing. Carbon neutral steel making will explore how we can transition the industry from using coal as its primary energy source to a mix of waste materials, renewable energy and hydrogen. Smart steel processing will examine how digital technology and sensors can be used to increase productivity and also explore how a transformation in the way in which steel is processed can add significant value and create new markets, in particular construction, whilst expanding the opportunities afforded by advanced steel products in the electrification of vehicular transport. The UK steel businesses cover different market sectors and are all engaged in this project committing >£13M in supporting funds. Tata Steel lead work on strip steel products used in automotive (inc electrical steels for generators and motors construction) and packaging applications. British Steel produce long products for key sectors such as rail transport and construction. Liberty Specialty produce unique steels for sectors such as aerospace and nuclear power, Sheffield Forgemasters manufacture products for power generation, defence and civil nuclear industries, and Celsa make section steels and reinforcement primarily for construction. This represents a key element of advanced materials that underpin a large proportion of the UK manufacturing sector. The increasing diversity and lower carbon intensity of UK made steel products together with greater productivity and efficiency will thus benefit the whole of UK manufacturing and create opportunities for manufacturing to make inroads into traditional areas for example by driving offsite manufactured construction alternatives to traditional low skill labour intensive routes. Steel is the world's most used and recyclable advanced material and this project aims to transform the way it is made. This includes approaches both to use and re-use it and harness opportunities to turn any waste product into a value added element for another industry. To illustrate, a steel plant produces enough waste heat to power around 300,000 homes. New materials can trap this heat allowing it to be transported to homes and offices and be used when required without the need for pipes. This then makes the manufacturing site an embedded component of the community and is clearly a model applicable to any other high energy manufacturing operation in other sectors. We will at each stage explore how our discoveries in transforming steel can be mapped onto other key foundation materials sectors such as glass, petrochemicals and cement. Implementation of the research findings will be facilitated via SUSTAIN's network of innovation spokes ensuring that high quality research translates to highly profitable and competitive processes.

Historically, the discovery, development and application of metals have set the pace for the evolution of human civilisation, driven the way that people live, and shaped our modern societies. Today, metals are the backbone of the global manufacturing industry and the fuel for economic growth. In the UK, the metals industry comprises 11,100 companies, employs 230,000 people, directly contributes £10.7bn to the UK GDP, and indirectly supports a further 750,000 employees and underpins some £200bn of UK GDP. As a foundation industry, it underpins the competitive position of every industrial sector, including aerospace, automotive, construction, electronics, defence and general engineering. However, extraction and processing of metals are very energy intensive and cause severe environmental damage: the extraction of seven major metals (Fe, Al, Cu, Pb, Mn, Ni and Zn) accounts for 15% of the global primary energy demand and 12% of the global GHG emission. In addition, metals can in theory be recycled infinitely without degradation, saving enormous amounts of energy and CO2 emission. For instance, compared with the extraction route, recycling of steel saves 85% of energy, 86% GHG emission, 40% water consumption and 76% water pollution. Moreover, metals are closely associated with resource scarcity and supply security, and this is particularly true for the UK, which relies almost 100% on the import of metals. The grand challenge facing the entire world is decoupling economic growth from environmental damage, in which metals have a critical role to play. Our vision is full metal circulation, in which the global demand for metallic materials will be met by the circulation of secondary metals through reduce, reuse, remanufacture (including repair and cascade), recycling and recovery. Full metal circulation represents a paradigm shift for metallurgical science, manufacturing technology and the industrial landscape, and more importantly will change completely the way we use natural resources. Full metal circulation means no more mining, no more metal extraction, and no more primary metals. We will make the best use of the metals that we already have. We propose to establish an Interdisciplinary Circular Economy Centre, CircularMetal, to accelerate the transition from the current largely take-make-waste linear economy to full metal circulation. Our ambition is to make the UK the first country to realise full metal circulation (at least for the high-volume metals) by 2050. This will form an integral part of the government's efforts to double resource productivity and realise Net Zero by 2050. We have assembled a truly interdisciplinary academic team with a wide range of academic expertise, and a strong industrial consortium involving the full metals supply chain with a high level of financial support. We will conduct macro-economic analysis of metal flow to identify circularity gaps in the metals industry and to develop pathways, policies and regulations to bridge them; we will develop circular product design principles, circular business models and circular supply chain strategies to facilitate the transition to full metal circulation; we will develop circular alloys and circular manufacturing technologies to enable the transition to full metal circulation; and we will engage actively with the wider academic and industrial communities, policy makers and the general public to deliver the widest possible impact of full metal circulation. The CircularMetal centre will provide the capability and pathways to eliminate the need for metal extraction, and the estimated accumulative economic contribution to the UK could be over £100bn in the next 10 years.

Metallic materials are indispensable to modern human life. From everyday items such as aluminium drinks cans, to advanced applications like jet engine turbine blades and the pressure vessels of nuclear reactors, the positive social impact of metals is difficult to overstate. Yet despite major advances in our understanding of the manufacture and properties of metals, significant challenges remain. Constructing the next generation of electric cars will require improved lightweight alloys and joining technologies. Development of fusion power plants, which will provide near-limitless carbon-free energy, will require the development of advanced alloy systems capable surviving the extreme environments found inside reactors. For the next generation of hypersonic air and space vehicles, we require propulsion systems capable of over Mach 5. Alloys will need to survive 1800 degrees Celsius, be made into complex shapes, and be joined without losing any of their properties. Overcoming these challenges by improving existing metallic materials, developing new ones, and adapting manufacturing methods, then the benefits will be substantial. Now is a particularly exciting time to be involved in metallurgical research and manufacturing. This is not only because of the kinds of compelling challenges specified above, but also because of the opportunities afforded by the emergence of new advanced manufacturing technologies. Innovative techniques such as 3D printing are enabling novel shapes and design concepts to be realised, whilst the latest solid-state processes allow for the design and production of bespoke alloys that cannot be made by conventional liquid casting techniques. Industry 4.0, or the fourth industrial revolution, provides opportunities to optimise emerging and established technologies through the use of material and process data and advanced computational techniques. In order to fully exploit these opportunities, we need to understand the complex relationships between the processing, structure, properties and performance of materials, and link these to the digital manufacturing environment. To deliver the factories of tomorrow, which will be critical to the future strength of UK plc and the wider economy, industry will require more specialists with a thorough understanding of metallic materials science and engineering. These metallurgists should also have the professional and technical leadership skills to exploit emerging computational and data-driven approaches, and be well versed in equality and diversity best practice, such that they can effect positive changes in workplace culture. The EPSRC Centre for Doctoral Training in Advanced Metallic Systems will help to deliver these specialists, currently in short supply, by recruiting and training cohorts of high level scientists and engineers. Through collaboration with industry, and a comprehensive training in fundamental materials science and computational methods, professional skills, and equality and diversity best practice, our graduates will be equipped to become future research leaders and captains of industry.

The UK Foundation Industries (Glass, Metals, Cement, Ceramics, Bulk Chemicals and Paper), are worth £52B to the UK economy, produce 28 million tonnes of materials per year and account for 10% of the UK total CO2 emissions. These industries face major challenges in meeting the UK Government's legal commitment for 2050 to reduce net greenhouse gas emissions by 100% relative to 1990, as they are characterised by highly intensive use of both resources and energy. While all sectors are implementing steps to increase recycling and reuse of materials, they are at varying stages of creating road maps to zero carbon. These roadmaps depend on the switching of the national grid to low carbon energy supply based on green electricity and sustainable sources of hydrogen and biofuels along with carbon capture and storage solutions. Achievement of net zero carbon will also require innovations in product and process design and the adoption of circular economy and industrial symbiosis approaches via new business models, enabled as necessary by changes in national and global policies. Additionally, the Governments £4.7B National Productivity Investment Fund recognises the need for raising UK productivity across all industrial sectors to match best international standards. High levels of productivity coupled with low carbon strategies will contribute to creating a transformation of the foundation industry landscape, encouraging strategic retention of the industries in the UK, resilience against global supply chain shocks such as Covid-19 and providing quality jobs and a clean environment. The strategic importance of these industries to UK productivity and environmental targets has been acknowledged by the provision of £66M from the Industrial Strategy Challenge Fund to support a Transforming Foundation Industries cluster. Recognising that the individual sectors will face many common problems and opportunities, the TFI cluster will serve to encourage and facilitate a cross sectoral approach to the major challenges faced. As part of this funding an Academic Network Plus will be formed, to ensure the establishment of a vibrant community of academics and industry that can organise and collaborate to build disciplinary and interdisciplinary solutions to the major challenges. The Network Plus will serve as a basis to ensure that the ongoing £66M TFI programme is rolled out, underpinned by a portfolio of the best available UK interdisciplinary science, and informed by cross sectoral industry participation. Our network, initially drawn from eight UK universities, and over 30 industrial organisations will support the UK foundation industries by engaging with academia, industry, policy makers and non-governmental organisations to identify and address challenges and opportunities to co-develop and adopt transformative technologies, business models and working practices. Our expertise covers all six foundation industries, with relevant knowledge of materials, engineering, bulk chemicals, manufacturing, physical sciences, informatics, economics, circular economy and the arts & humanities. Through our programme of mini-projects, workshops, knowledge transfer, outreach and dissemination, the Network will test concepts and guide the development of innovative outcomes to help transform UK foundation industries. The Network will be inclusive across disciplines, embracing best practice in Knowledge Exchange from the Arts and Humanities, and inclusive of the whole UK academic and industrial communities, enabling access for all to the activity programme and project fund opportunities.