“Design of high-strength Aluminium alloys for Laser-based Additive Manufacturing”
Abstract: During the talk, the design approaches for highstrength Al alloys specifically developed for laser AM will be discussed. Concepts related to solidification behaviour and hot cracking failures are presented. Strategies for the optimization of the alloy microstructure through thermal treatments are evaluated, also considering issues related to residual stress control.
Maurizio Vedani is full professor of Metallurgy at Politecnico di Milano and chief of the Material Section at the Department of Mechanical Engineering. The main subjects of his scientific activity concern research on microstructure and mechanical behaviour during manufacturing and service of several metals and metallic alloys, ranging from structural steels to non-ferrous alloys such as aluminium and magnesium alloys, and metal matrix composites. The most recent research activities concern the solidification behaviour and the development of novel alloys for metal additive manufacturing.
“Integrity assessment of castings”
Abstract: Process–microstructure–property relationships represent a key issue in the industrial production and application of materials. Castings may enclose defects and metallurgical discontinuities that can cause high variability in their mechanical properties. To minimize this variability, the integrity of castings should be easily evaluated through procedures based on tensile testing. A procedure based on modelling tensile flow curves through Voce equation has given promising results on both process–microstructure classification and integrity assessment of a wide number of different castings.
Examples of applications on ductile irons (ferritic and pearlitic-ferritic; high silicon strengthened; austempered and isothermed) and aluminium alloys are presented.
Giuliano Angella is researcher at the National Research Council of Italy in the Institute ICMATE and head of the ICMATE branch of Milano. His research activity is mainly focused on microstructure and mechanical characterization of metallic alloys, like Ni base superalloys, steels, cast irons and aluminium alloys, with the aim of building physical base models and relationships among process-microstructure-properties for integrity assessment of materials.