Crystal nucleation and growth processes induced by an externally applied shear strain in a model metallic glass are studied by means of nonequilibrium molecular dynamics simulations, in a range of temperatures. We observe that the nucleation-growth process takes place after a transient, induction regime. The critical cluster size and the lag-time associated with this induction period are determ...

This paper develops a new simulation model for crystal size distribution dynamics in industrial batch crystallization. The work is motivated by the necessity of accurate prediction models for online monitoring purposes. The proposed numerical scheme is able to handle growth, nucleation, and agglomeration kinetics by means of the population balance equation and the method of characteristics. The...

A comprehensive crystallization kinetics study was carried out in order to understand the mechanism of formation of a Mg-rich nanocrystalline Mg6Ni phase in a metallic glass with similar overall composition, Mg83Ni17. Adequate description of the transformation kinetics was obtained by the JMKA equation with an integer Avrami exponent n = 4, associated with nucleation and three-dimensional linea...

Biogenic single crystals with complex shapes are believed to be generated by the crystallization of an amorphous precursor. Recent biomimetic experiments on the crystallization of calcite via amorphous-to-crystalline transition point to the fact that the transformation kinetics may be controlled by the micropattern and the macroscopic shape of the amorphous precursor phase. Here we analyse a si...

This essay is about the crystallization of proteins. Since the first published observation of crystallizing proteins about 160 years ago, protein crystal growth has developed into an extensive research field with many applications, for instance in the pharmaceutical industry. In this report, an overview of the unique physical-chemical characteristics of protein molecules, their properties in so...

The effects of the incorporation of multiwalled carbon nanotubes (MWNT) with a diameter range of 10-30 nm on the shear-induced crystallization behavior of poly(butylene terephthalate) (PBT) were investigated under myriad shearing and loading conditions employing principally the small-amplitude oscillatory shear flow. Upon shearing, the presence of MWNTs leads to the crystallization of the PBT n...

Crystallization kinetics of Fe52Cr18Mo7B16C4Nb3 alloy was evaluated using X-ray diffraction, differential scanning calorimetric (DSC) tests and TEM observations in this research work. In effect, crystallization and growth mechanisms were investigated using DSC tests in four different heating rates (10, 20, 30, 40 K/min) and kinetic models (i.e. Kissinger- Starink, Ozawa, and Matusita methods). ...

Electron diffraction studies of vapor-deposited water ice have characterized the dynamical structural changes during crystallization that affect volatile retention in cometary materials. Crystallization is found to occur by nucleation of small domains, while leaving a significant part of the amorphous material in a slightly more relaxed amorphous state that coexists metastably with cubic cryst...

In this work, an economical modifier silane agent—KH550—was used for surface treatment of basalt fiber. Then, a biodegradable poly(butylene succinate) (PBS)/modified basalt fiber (MBF) biocomposite was successfully developed. The effects of silane treatment and fiber mass content on crystalline structure, isothermal crystallization process and mechanical performance of composites were evaluated...