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Particles Precipitation in Ti‐ and Al‐Deoxidized Hadfield Steels
Author(s) -
Siafakas Dimitrios,
Matsushita Taishi,
Lauenstein Åsa,
Ekerot Sven,
Jarfors Anders E. W.
Publication year - 2016
Publication title -
steel research international
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.603
H-Index - 49
eISSN - 1869-344X
pISSN - 1611-3683
DOI - 10.1002/srin.201500400
Subject(s) - titanium , materials science , precipitation , nucleation , metallurgy , dissolution , scanning electron microscope , nitride , carbide , titanium carbide , carbon fibers , particle (ecology) , manganese , aluminium , chemical engineering , composite material , chemistry , meteorology , physics , oceanography , organic chemistry , layer (electronics) , composite number , engineering , geology
The characteristics and precipitation mechanism of particles in titanium‐ and aluminum‐treated Hadfield steel casted during pilot‐scale experiments have been studied. Light Optical Microscopy (LOM), Scanning Electron Microscopy (SEM), and Energy Dispersive X‐ray Spectroscopy (EDS) are utilized for the particle analysis and characterization. Additionally, thermodynamic equilibrium calculations are performed using Thermo‐Calc software. Aluminum oxides, titanium carbon nitrides, titanium carbides, and manganese sulfides are the main types of particles found. The order of precipitation during solidification and chemical composition range of each type of particle are determined. Aluminum oxides are found to act as nucleation sites for titanium carbon nitrides. Thermodynamic equilibrium calculations for particles characteristics are in good agreement with the experimental findings. Titanium carbides are found to form during initial stages of the ferro‐titanium additions dissolution.
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