A5078109211- Metal and Thin Film Mechanics
- Metal Alloys Wear and Properties
- High Entropy Alloys Studies
- Additive Manufacturing Materials and Processes
- Microstructure and Mechanical Properties of Steels
- Additive Manufacturing and 3D Printing Technologies
- Powder Metallurgy Techniques and Materials
- Hydrogen embrittlement and corrosion behaviors in metals
- Injection Molding Process and Properties
- Advanced materials and composites
- GaN-based semiconductor devices and materials
- Diamond and Carbon-based Materials Research
- Nanomaterials and Printing Technologies
- Advanced machining processes and optimization
- Boron and Carbon Nanomaterials Research
- Welding Techniques and Residual Stresses
- Advanced Sensor and Energy Harvesting Materials
- Corrosion Behavior and Inhibition
Chalmers University of Technology
2014-2021
In this study, expanded austenite was prepared by an industrial low-temperature plasma nitriding process in 304L and 904L austenitic stainless steels. The current investigation focuses on the assessment of thermal stability related phase evolution layer during isothermal annealing protective argon atmosphere at temperatures ranging from 450 to 600°C for 24 168 h. Characterisation original decomposed surface layers performed. Denitriding, inward N-diffusion Cr-compounds precipitation occurred...
The current study focuses on the characterization of nitrided layer, formed in American Iron and Steel Institute (AISI) 304L AISI 904L austenitic stainless steels by industrial low‐temperature plasma nitriding, using combined analysis techniques. highlighted that evolution microstructure layers is influenced surface finishing prior to alloying elements nitriding conditions, all factors affecting S‐phase formation nitrogen (N) diffusion mechanisms. chemical bonding characteristics Cr 2p 3/2 N...
In this work, a highly alloyed cold work tool steel, Uddeholm Vanadis 4 Extra, was manufactured via the electron beam melting (EBM) technique. The corresponding material microstructure and carbide precipitation behavior as well microstructural changes after heat treatment were characterized, key mechanical properties investigated. as-built condition, consists of discontinuous network very fine primary Mo- V-rich carbides dispersed in an auto-tempered martensite matrix together with ≈15%...
A maraging grade and a modified H13 type tool steel were used as testing materials to study the possibility of healing printing defects while combining solutionizing/hardening treatment components. Extensive mechanical microstructural analysis showed that high-pressure heat can stabilize retained austenite in grades, but has no effects on aging kinetics. HIP temperature 850°C is not sufficient heal highly defective components, 1020°C fully component. Increasing over 1140°C causes lower...
Vanadis 4E (V4E) is a powder metallurgical cold work tool steel predominantly used in application with demand for wear resistance, high hardness, and toughness. It of interest to have processing route that enables full density starting from clean gas-atomized allowing component shaping capabilities. This study presents process involving freeze granulation facilitate compaction by means isostatic pressing, followed sintering allow capsule-free hot pressing (HIP) subsequent heat treatments...
Many everyday life devices are characterized by the use of transparent conductive coating (TCC) technology. The leader product in market materials (TCM) is currently indium tin oxide (ITO), which both excellent optical transparency and electrical conductivity. Since last few decades academic industrial researches focused on looking for alternative solutions order to overcome ITO's intrinsic drawbacks: increasing price indium, toxicity tin, high production costs fragility. In this work...
High-nitrogen-chromium alloyed powder metallurgy (PM) tool steels offer many attractive features including high strength and corrosion resistance. The PM route offers various advantages such as advanced alloy composition, homogeneity, well-defined size distribution of hard phase particles. This study presents microstructure mechanical properties a Cr-Mo-V-N alloy. conventional manufacturing for this is hot isostatic pressing (HIP) followed by working. To investigate the possibility...