نتایج جستجو برای: microalloyed steel

تعداد نتایج: 81506  

Journal: :Research in Computing Science 2016
Carlos A. Hernández Carreón Graciela Mora Guadalupe Castilla V. Alejandro López Juana E. Mancilla Tolama

The problem of Scheduling Hot Rolling Pass of Steels is very complex because it has large spaces search for solutions. The aim of this work was the Multi-Objective Optimization (MOO) of hot rolling steel sheets in a finishing train of six steps, implementing the second generation of Nondominated Sorting Genetic Algorithm (NSGA-II). It was used two different crossover (AG1 y AG2) operators and t...

Journal: :Metals 2023

This study reports the welded joint of a novel 590 MPa V-N microalloyed wheel steel on microstructure and mechanical properties after flash butt welding. The welding parameters were current 48°/582.0 A, upsetting 44°/516.6 workpiece clearance 1.5 mm. evolution in occurred as follows: seam (ferrite side plate + acicular ferrite +martensite)→coarse-grained zone (acicular granular bainite)→fine-gr...

Journal: :Materials research express 2023

Abstract Based on the thermodynamic coupling model of multiple microelements in steels, solid solution and precipitation behavior Nb-V-N-C system quaternary secondary phase was further verified microalloyed combining with engineering practice high-strength spring steel FAS3550 containing nanoparticles. According to calculations, dissolved V (or Nb) content increased increasing addition Nb), whi...

Journal: :Metals 2022

The effect of grain size on the mechanical properties and creep rupture 253 microalloyed (MA) austenitic stainless steel (ASS) was investigated. cold rolling process with a 53% reduction in thickness applied to followed by annealing at 1100 °C over 0, 900, 1800, 3600 s obtain sizes 32.4, 34.88, 40.35, 43.77 µm, respectively. Uniaxial tensile micro-Vickers hardness tests were carried out study r...

Journal: :Ironmaking & Steelmaking 2016

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