One of the most promising ways to produce a grain-refined microstructure in some steel materials is the thermomechanical processing route of subcritical recrystallization annealing of a cold-deformed martensite structure. In the present study, the microstructural evolutions and the associated recrystallization kinetics under various subcritical annealing heat treatment conditions are explored i...

Abstract Suspension reduction kinetics of hematite ore particles at 1710 K to 1785 was described by the Johnson-Mehl-Avrami-Kolmogorov model with Avrami exponent 1.405. The apparent activation energy is 105.5 kJ mol −1 rate determining step nucleation and growth. degree endpoint a linear function temperature logarithmic oxygen potential reacting gas. A peak reaction constant particle size has b...

In this study, the crystallization behavior of a 65GeO2-15PbO-10MgF2-10MgO glass (prepared by the conventional melt quenching technique) has been investigated. The microstructure and crystallization behaviors of this glass were characterized using X-ray diffraction (XRD), scanning electron microscopy (SEM), non-isothermal differential thermal analysis (DTA) and Fourier transform infrared spectr...

Abstract The full characteristic of the crystallization process aripiprazole crystal is given. Our research reveals that a degree crystallinity calculated from analyses data light intensity passing through sample (Thermo-Optical Analysis based on Polarized Light Microscopy—POM), Canny edge detection algorithm, and Differential Scanning Calorimetry—DSC, are in good agreement. parameters Avrami m...

Cocoa butter was crystallized statically from the melt to various temperatures in the range of -20 to 26 °C and annealed for up to 45 days. During this period, the polymorphism of the solid state was monitored using differential scanning calorimetry and powder X-ray diffraction. Moreover, the microstructure of the materials was imaged using polarized light microscopy. Below -15 °C, a mixture of...

Crystallization of α – Fe phase during annealing process of Fe55Cr18Mo7B16C4 bulk amorphous alloy has been evaluated by X- ray diffraction, differential scanning calorimetric tests and TEM observations in this research. In effect, crystallization mechanism and activation energy of crystallization were evaluated using DSC tests in four different heating rates (10, 20, 30, 40 K/min). A two -st...

Mango kernel fat (MKF) has received attention in recent years due to the resemblance between its characteristics and those of cocoa butter (CB). In this work, fatty acid (FA) composition, physicochemical and thermal properties and crystallization behavior of MKFs obtained from four varieties of Thai mangoes: Keaw-Morakot (KM), Keaw-Sawoey (KS), Nam-Dokmai (ND) and Aok-Rong (AR), were characteri...

The transformation from the C49 to the C54 phase in TiSi2 thin films has been studied for more than a decade because of its importance to the semiconductor industry. In previous work we identified three dominant C54 orientations in TiSi2 thin films on Si(001) substrates using X-ray pole figure analysis. In the current study the evolution of the three prominent C54 texture components was further...

Abstract The effects of Nb addition on the recrystallization kinetics and recrystallized grain size distribution after cold deformation were investigated by using Fe-30Ni Fe-30Ni-0.044 wt pct steel with comparable starting distributions. samples deformed to 0.3 strain at room temperature followed annealing 950 °C 850 for various times; microstructural evolution non- fully characterized, along s...

We employ dielectric spectroscopy to monitor the relaxation dynamics and crystallization kinetics of the Biclotymol antiseptic in its amorphous phase. The glass transition temperature of the material as determined by dielectric spectroscopy is Tg = 290 ± 1K. The primary (α) relaxation dynamics is observed to follow a Vogel-Fulcher-Tammann temperature dependence, with a kinetic fragility index m...