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Research Article

Influence of Strength Mismatch on Microstructural Evolution and Mechanical Behaviors for Q390/Q690 Ferritic Steel Dissimilar Welded Joints

  •  17 January 2022

Abstract

Herein, the effects of filler materials on microstructural evolution and mechanical behaviors for two dissimilar welded joints (DWJs) of Q390 and Q690 steels are investigated. The acceptable strength mismatch mode for DWJs is revealed, i.e., the gradient difference in the equivalent yield strength (calculated from their hardness) between adjacent areas is ≈170 MPa.

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The following is a list of the most cited articles based on citations published in the last three years, according to CrossRef.

Open access

Reduction of Iron Oxides with Hydrogen—A Review

  •  18 August 2019

Abstract

Due to environmental issues, reduction of iron ores using hydrogen is a future-minded alternative for conventional process routes to decrease accompanying CO2 emissions. This study presents a review on the reduction of iron oxides, including the influence of process parameters, iron oxide, etc. with a focus on hydrogen acting as a reducing agent.

Review on Modeling and Simulation of Blast Furnace

  •  7 July 2017

Abstract

The design and control of blast furnace (BF) ironmaking must be optimizedin order to be competitive and sustainable. Mathematical modelling, often coupled with physical modelling, plays an important role in this area. This paper reviews the recent developments in the mathematical modelling of blast furnace, covering different BF regions from the top charging system, body, and finally down to raceway and hearth.

A Review of the Relationship between Viscosity and the Structure of Calcium‐Silicate‐Based Slags in Ironmaking

  •  611-630
  •  3 July 2012

Abstract

Effect of slag composition and temperature on the viscosity of calcium-silicate-based slags pertaining to the blast furnace have been reviewed and correlated to the detailed structural analysis from FTIR, XPS, Raman, and NMR. Polymerization of the slags' silicate structure resulted in higher viscosity determined through the spectral dominance of structures having lower NBO/Si, higher Q notations, or bridged oxygen ions.

Effect of TiO2 on the Viscosity and Slag Structure in Blast Furnace Type Slags

  •  150-156
  •  13 January 2012

Abstract

TiO2 additions lowered the viscosity of blast furnace type slags by depolymerizing the silicate network, but did not significantly affect the aluminate structures within the slags. TiO2 (5 mass%) decreased the viscosity, but higher TiO2 showed no meaningful changes in the viscosity. Increasing the CaO/SiO2 ratio was more effective in decreasing the viscosity than TiO2 additions.

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