Keynote Speaker
Prof. Marcel A.J. Somers
Department of Civil and Mechanical Engineering, Technical University of Denmark
E-mail: somers@ipl.dtu.dk
Title: Innovative Materials Solutions with Thermochemical Surface Engineering of Steels
Profile:
Marcel A.J. Somers is full professor of physical metallurgy at Technical University of Denmark (DTU). His scientific work is gas-metal interactions in surface engineering and gaseous corrosion along with microstructure characterization with microscopy, diffraction and spectroscopy. His work is of fundamental character with a technological importance and spin-off for industrial application. From 2000 to 2020, He has established and led an internationally visible section in Materials Science and Engineering with strong expertise in physical metallurgy, heat treatment, surface engineering, materials characterization and corrosion. Marcel Somers has published more than 320 papers in international scientific and technological journals and conference proceedings. His scientific work has provided the basis for a series of patents, most of which have been implemented industrially. He is co-founder of two spin-out companies in thermochemical surface engineering: Expanite (10) and TRD Surfaces (14).
Abstract:
Thermochemical surface engineering of steels provides a sheer endless source for innovative materials solutions. In this lecture a cornucopia of materials solutions relying on low temperature surface hardening (LTSH) and high temperature solution nitriding (HTSN) is presented, in some cases in combination with additive manufacturing. The following examples are included:
➣ LTSH of conventional and additively manufactured stainless steels by carburizing;
➣ Simultaneous LTSH and bulk hardening of maraging steel and precipitation hardening stainless steel;
➣ HTSN for improving austenite stability and preventing strain-induced martensite formation during severe deformation;
➣ HTSN of duplex stainless steels for improved resistance against crevice corrosion;
➣ Combatting white-etch cracking in bearings with HTSN and eutectoid decomposition to obtain a fine-grained martensitic case.
For the examples given it is demonstrated that a deep understanding of materials microstructure development and its relation to materials performance is a prerequisite for successful innovation.