A5056652458- Microstructure and Mechanical Properties of Steels
- Metal Alloys Wear and Properties
- Hydrogen embrittlement and corrosion behaviors in metals
- Advanced Materials Characterization Techniques
- Welding Techniques and Residual Stresses
- High Temperature Alloys and Creep
- Metallurgy and Material Forming
- Additive Manufacturing Materials and Processes
- Metal and Thin Film Mechanics
- Microstructure and mechanical properties
- High Entropy Alloys Studies
- Advanced Welding Techniques Analysis
- Advanced materials and composites
- Material Properties and Applications
- Metallurgical Processes and Thermodynamics
- Intermetallics and Advanced Alloy Properties
- Adversarial Robustness in Machine Learning
- Advanced machining processes and optimization
- Fusion materials and technologies
- Animal testing and alternatives
- Fatigue and fracture mechanics
- Magnetic Properties and Applications
- Aluminum Alloy Microstructure Properties
- Geophysics and Sensor Technology
- Mechanical Failure Analysis and Simulation
Montanuniversität Leoben
2016-2025
Siemens (Germany)
2023-2024
Technical University of Munich
2024
Walter de Gruyter (Germany)
2022
Saarland University
2022
KUKA (Germany)
2022
Stahl-Zentrum (Germany)
2016-2020
Böhler Edelstahl (Austria)
2011-2019
Materials Center Leoben (Austria)
2017-2018
Voestalpine (Austria)
2013-2016
Laser powder bed fusion (LPBF) facilitates economic advantages by enhancing cutting speeds of tools through the implementation complex internal cooling channels that could not be fabricated otherwise. However, tool steels are prone to cracking during cyclic remelting process with extremely fast rates due their high carbon and alloying element contents related stresses. In this work, a correlation between microscopic crack patterns in steel processed via LPBF, residual stress gradients, local...
Abstract Welded high-strength steel components have great potential for use in lightweight constructions or highly loaded structures. Welding of steels with a yield strength more than 1100 MPa is particularly challenging because the toughness requirements weld metal. Currently, new generation welding consumables minimum has been developed. Based on electron backscatter diffraction and atom probe tomography, concept toughening strengthening all-weld metal samples was deployed. Starting from...
High strength combined with excellent ductility can be achieved by quenching and partitioning (Q&P) microstructures containing martensite a considerable amount of retained austenite. Since the mechanical properties are inherited from microstructure, thorough understanding this relationship is indispensable. In present work, in-situ synchrotron X-ray diffraction was used to investigate transformation kinetics during Q&P processing. The effect different heat treatment conditions on...
Abstract One class of maraging steels are strengthened by a combination β-NiAl and η-Ni 3 Ti intermetallic phases which precipitated during an aging heat treatment. To establish meaningful structure-property relationship the precipitation strengthening effect from each phase must be isolated other mechanisms. achieve this, series model alloys based on Fe-12Ni alloy system were aged characterized to determine effect. In course this study, using new approach, atom probe tomography was used...
One method of achieving exceptional ductility and toughness PH 13-8 Mo maraging steels is to perform aging at high temperatures or for prolonged dwell times, which referred as overaging. The increase in primarily related the formation amounts reverted austenite during aging. An alternative approach elevate content intercritical annealing, i.e., annealing dual phase field martensite austenite, prior Due partitioning substitutional elements freshly formed enriched Ni after cooling. As a...
High strength structural steels are in high demand thanks to their favorable mechanical properties. They offer with sufficient toughness and good forming capabilities. Applications range from shipbuilding, offshore constructions, cranes, pipelines. A lot of current research focuses on weldability low alloy (HSLA) steels, especially improving the weld zone, i.e., metal (WM) heat affected zone (HAZ). In present work, four different fusion welding processes using undermatching filler compared...
Abstract Pursuing the reduction of CO 2 emissions, steel industry shifts towards a scrap-based electric arc furnace production that results in elevated levels tramp elements. The effect these elements on material properties and microstructure is not understood detail advanced microstructural complex steels. This study employs methods to investigate typical cold headed wire-rod steel, micro-alloyed with vanadium, from blast trial alloy intentionally increased element concentrations. Light...
High‐speed steels (HSS) exhibit a microstructure that comprises martensitic matrix with carbides. Due to the generally high thermal stability of carbides, it is necessary perform hardening at very austenitizing temperatures. Nevertheless, there are certain carbides in HSS not dissolved. Therefore, composition austenite, which can be transformed into martensite, significantly different from alloys’ nominal composition. Consequently, commonly applied formulae for calculation martensite start...
Compared to conventional fabrication methods, additive manufacturing (AM) introduces new opportunities in terms of design freedom and part complexity due the incremental layer‐by‐layer process. For tooling applications, higher cutting speeds can be realized by implementing internal cooling channels tools that could not fabricated otherwise. However, processability high‐alloyed tool steels with laser powder bed fusion (LPBF) faces certain restrictions. In addition pore formation, severe...
High-strength lightweight constructions are a crucial part of transportation systems and steel optimised for low energy consumption. In this investigation, the aim is to understand influence different alloying elements on mechanical properties all-weld metal samples high-strength filler metals. Metal-cored wires with adjusted chemistry were produced measured yield strength compared calculated values which obtained by thermodynamic kinetic simulations. By increasing content matrix elements,...