Results 81 to 90 of about 6,376 (231)
Kinetics of vanadium carbonitride precipitation in steel: A computer model [PDF]
, 2005 We have constructed a computer model of the precipitation kinetics of vanadium carbonitride in steel that takes into account the composition evolution of the precipitates with time.
Gouné, Mohamed, Maugis, Philippe
core +1 more source
Influence of Oxygen Contamination on the Genesis of Nonmetallic Inclusions in a Microalloyed Steel
steel research international, EarlyView.Oxygen contamination during melting of steels strongly affects the evolution of nonmetallic inclusions. Controlled remelting experiments, combined with SEM/EDS analysis and thermodynamic simulations, reveal how reoxidation promotes the transformation of alumina‐based inclusions into complex FeO–MnO oxides and other interactions.
Leandro Pianca Prandi +2 more
wiley +1 more source
Teshugang, 2022 Microstructure and properties of Nb-Ti microalloyed ultra-high-strength steel (/% ： 0. 36C, 0. 45Si, 0. 63Mn,0.005P,0.002S,0. 83Ni, 1.2Cr,0. 23Mo,0.04Nb,0.01 Ti,0.004 0N,0.002 00) are studied by tensile tester, impact tester, metallographic microscope ...
杨晰 +5 more
doaj
steel research international, EarlyView.This review explains how impurities from recycled scrap affect steel production and performance. Even small amounts (far below 1%) of these impurities can change how steel behaves during fabrication but also affect the properties of the end product. With better understanding and targeted countermeasures, these challenges can be managed, enabling wider ...
Oleksandr Glushko, Ronald Schnitzer
wiley +1 more source
Optimization of resistance spot welding parameters for microalloyed steel sheets
Open Engineering, 2016 The paper presents the results of resistance spot welding of hot-dip galvanized microalloyed steel sheets used in car body production. The spot welds were made with various welding currents and welding time values, but with a constant pressing force of ...
Viňáš Ján +2 more
doaj +1 more source
Modification of Non-Metallic Inclusions by Rare-Earth Elements in Microalloyed Steels [PDF]
, 2012 The modification of the chemical composition of non-metallic inclusions by rare-earth elements in the new-developed microalloyed steels was discussed in the paper.
A. Grajcar, M. Opiela
core +2 more sources
The influence of Widmanstätten ferrite, martensite and grain boundary carbides on the strength and impact behaviour of high Al (0.2%) and Nb containing hot rolled steels [PDF]
, 2020 The influence of Al and Nb on the strength and impact behaviour of hot rolled 0.06%C, 1.4%Mn steels has been determined after hot rolling to 15 and 30 mm thick plate.
Barrie, M., Naher, S., Qaban, A.
core +1 more source
steel research international, EarlyView.High Nb (2.4 wt.%) addition to Maraging 300 steel drives lattice distortion and nanoscale Nb–Mo‐rich precipitation, confirmed by energy‐dispersive X‐ray spectroscopy mapping (Mo ~5.4 wt.%, Nb ~2.5 wt.%). Nanoindentation reveals strong matrix hardening (H >4.8 GPa) at 480°C aging, while 560°C induces ~1.92 vol.% reverted austenite, enabling tunable ...
Laylla Sharon B. Peixoto +9 more
wiley +1 more source
Influence of plasma nitriding pressure on microabrasive wear resistance of a microalloyed steel
Journal of Materials Research and Technology, 2019 Microalloyed steels have been studied not only by the advent of the pre-salt, but also by the continuous search for improvement of their tribological properties.
Henver Effgen Ludovico Ramos +2 more
doaj +1 more source
steel research international, EarlyView.Niobium cathodic cage duplex treatment is applied to VP20TS steel to evaluate the influence of surface roughness and temperature on coating performance. Results show that higher temperatures promote thicker nitride layers and increased microhardness, while finer surface preparation enhances adhesion and wear resistance, revealing optimal conditions for
Alan Bruno Costa Cardoso +6 more
wiley +1 more source