AAEC 2025 Abstracts

Abstracts below do not appear in speaking order

Marghanita Johnson

Tri Dung Phan1, Maciej Mazur1, Thomas Dorin2, Andrey Molotnikov1, Richard Axe3, Alessandro Ferrari4, and Mark Easton1

Paul C Wong1, Damir Medovic2, and Ikky Sanghrajka2

Paul Robbins, Shah Imani, and Richard Dickson

Paul Robbins1, Yahya Mahmoodkhani, Chris Jowett2, and Richard Dickson1

Jerome Fourmann1, Richard Dickson2, Paul Robbins2, and Craig Werner3

Cameron Keast, Dallas Edwards, Nicholas Baird, and Scott Hatton

Marco Schreiber1, Devid Zampedri1, Torsten Schäfer2, Christian Löbbe2, and André Schulze3

Andrea Trevisan and Lorenzo Aldrighetti

Valentin Gala, Felix Lang, and André Schulze

Bill Wyllie and Joseph Kalarickal

Paul Rometsch1, Nick C. Parson1, and Jerome Fourmann2

Pau Vial and Gabriele Macedonio

Paul C Wong1 and Warren R Davison2

Raffaele D’Andrea

Raffaele D’Andrea

Massimo Pezzorgna and Andrea Scaccabarozzi

Jostein Røyset1, Scott Rogers2, Takeshi Saito2, and Ulf Tundal1

Stig Tjøtta1, Scott Rogers2, and Takeshi Saito2

Nick C. Parson1, Jean-François Béland2, and Jerome Fourmann3

Abstract. Al-Mg-Si extrusions are widely used in automotive structures and crash management systems. In terms of material properties, a high yield strength is desirable for downgauging combined with superior ductility to accommodate plastic deformation associated with part forming, mechanical joining and crash with minimal cracking. The role of press quench is well recognised and water spray quenching is typically applied. The authors previously established a preferred minimum quench rate of 50°C/sec. However, the size and complexity of recent profile designs, e.g., for battery enclosures, can result in excessive distortion at high quench rates. It is therefore important to understand the material performance trade-offs with sub-optimal quenching. A test program was conducted using a purpose-built “quench simulator” to study the effect of quench rates in the forced air to spray regimes for a range of commonly used automotive alloys. Strength and ductility were quantified by tensile and bend testing. 

Paul Rometsch1 and Jerome Fourmann2

Abstract. Scandium (Sc) can offer many benefits to aluminium alloys, such as significant strengthening, grain structure control and corrosion inhibition. However, Sc has rarely been used in extrusions due to cost and supply issues. Another but somewhat related challenge is that there are metallurgical aspects to be understood and exploited if maximum benefits are to be achieved from minimal Sc additions. This work explores the effects of small Sc additions (~0.1wt%) on selected extrusion alloys from among the 1xxx-, 3xxx-, 5xxx- and 6xxx-series alloys. The addition of Sc to 6xxx-series extrusion alloys is particularly challenging due to the potential loss of Sc to coarse non-hardening AlSiSc particles and due to the mismatch in aging temperatures between the Al3Sc and MgSi hardening precipitates. This work reveals possible pathways for processing different types of extrusion alloys to achieve maximum microstructure and property benefits per unit Sc addition.

Hanif Hamzah

Abstract. Multi-cavity die design has always been a simple die to make but a difficult die to extrude for the extrusion industry. The extrusion industry is facing a low productivity in output and a low press recovery. An approach to review the die designs is investigated for both solid and hollow dies. A solid die design is discussed from two cavities or more made in the die making process.

The design covers the pocket die type, a feeder plate die design and also the ring type die designs. The basic fundamentals of conventional multi-cavity dies are discussed and the merit and demerits are reviewed from die making to final die correction. The hollow dies are also discussed with the various types of die designs used in the extrusion process. The conventional method is reviewed along with the new type of die designs with the objectives to get better press recovery and productivity. Nevertheless, process factors such as the press alignment and temperature are considered for the die to perform. The approach to the new concept of die design and the introduction of negative bearing in the solid die designs helps in gaining the stability of die performance. The stability of dies in the extrusion is the key indicator to gain a higher output and better press recovery. Thus, for multi-cavity dies in extrusion, die design plays a key role to stabilise the die for better productivity and press recovery.

James E. Dyla

Abstract. The use of Programmable Logic Controllers (PLCs) has gained widespread use to control, monitor, and optimise aluminium extrusion presses and related ancillary equipment (billet heater, log saw/shear, loader, extrusion press, cut-to-length saw). Over the years, automatic extrusion tool lubrication systems have typically been controlled using PLC outputs from these components. Simple lubrication systems are easily integrated with these components and require limited outputs, inputs, programming, and wiring.

Automatic lubrication systems have become more complex to improve performance and reliability.  With this comes the need for PLC programming and related inputs/outputs. To ease installation and ensure proper sequencing, small pre-programmed pre-wired independent PLCs are now being employed. This is especially useful when retrofitting older equipment with limited PLC outputs and inputs. This presentation will provide an overview of how these systems are quickly evolving the concept of automatic lubrication expectations.

Jan Günter

Abstract. Extrusions for various applications require properties only achievable with a modern high-pressure profile spray quench. One of the features of a modern extrusion quench is that the amount of cooling can be precisely controlled. Modulating the heat transfer coefficient allows response to the cooling requirements of a large variety of profiles. Using multiple nozzles with different flow rates in combination with modulating the water pressure provides the widest range of products can be quenched with one and the same equipment, while minimising distortion. This paper will introduce the patented Alpha Flex Technology. By using a two-cavity aluminium extrusion, different nozzles can be used in one nozzle stock increasing the range of the achievable heat transfer coefficients.

Dennis Nordmeyer

Abstract. In response to the changing market situation due to energy shortages and the need to substitute fossil energy sources, a high speed convection furnace equipped with electric resistance heating elements has been developed. The idea of operating the oven exclusively with electricity opens up the possibility of completely avoiding CO2 emissions, provided that the oven is operated with ‘green’ electricity. The high convection furnace can achieve efficiencies of 87%, but cannot produce a sufficient taper, and hence it is necessary to integrate an induction module. The induction oven can be combined either as a ‘stand-alone’ version or a patented ‘inline’ version. The combination of electrical resistance with induction heating provides maximum energy efficiency with state-of-the-art taper heating and at the same time make it possible to take the step towards CO2-free production of extrusions.

Anirban Giri, Dushyant Kumar Gupta, and Ram Sandipam Adhikary

Abstract. This paper explores key advancements in alloy solutions, focusing on their properties, applications, and development processes. It highlights a high-strength 6063 alloy designed for structural, defence, and marine applications, offering mechanical performance, durability, and corrosion resistance. A highly machinable, environmentally compliant alloy comparable to 6082 that has been tailored for automotive and industrial applications, enhancing manufacturability while maintaining structural integrity is presented. Additionally, an Ultra-high Strength (equivalent to 2024) and weldable 5xxx-Sc Aluminium alloy catering to the requirements of strategic sectors like Aerospace, Marine, High Speed Train and Electric Vehicles (EV) are described.

The study discusses material composition, microstructural characteristics, and processing techniques that contribute to these enhanced properties. By analysing their performance and development methodologies, this paper provides insights into the role of advanced alloys in engineering applications, supporting stronger, more efficient, and sustainable material solutions. Further research is underway to develop next-generation alloys with enhanced thermal stability, lightweight properties, and improved wear resistance, catering to emerging demands across aerospace, energy, and industrial sectors.