Enhanced Concentric Solidification Technique for High-Temperature Laser-Scanning Confocal Microscopy

Abstract

We present further developments and enhancements of the concentric solidification technique for high-temperature laser-scanning confocal microscopy. These recent enhancements include an automated in-situ determination of phase fractions during solidification using purposely developed image processing software, more accurate temperature calibration, reproducibility tests as well as close coupling of the experimental results with computational simulations. In the present study, the newly developed capabilities of the concentric solidification technique have been applied to a study of the peritectic phase transition in the Fe-C system.

Characterization and Control of Secondary Phase Precipitation of Nb–V–Ti Microalloyed Steel during Continuous Casting Process

“…3(a)). As is found by Slater et al 23) and other scholars 12,24) , the dark particles are the direct signs of the carbonitrides. Segregation of solute atoms usually occurs at the austenite grain boundary, which accelerates the precipitation of the carbonitrides and dark particles.…”

In Situ Observation of P91 High‐Alloy Steel Solidification Characteristics at Different Cooling Rates

“…The reaction was not controlled by carbon diffusion but rather by a massive transformation or solidification of the γ phase directly from the liquid. Griesser et al [ 17–19 ] revealed the mechanism of peritectic transformation in the equilibrium of peritectic steels by circular solidification experiments using HT‐CLSM. Agarwal et al [ 20 ] investigated the solidification process of transformation‐induced plasticity steels using HT‐CLSM and revealed the mechanism of phase‐change‐induced crack formation.…”

Migration Behavior of Inclusions at the Solidification Front in Oxide Metallurgy

“…Dippenaar used HTCLSM to study the phase transformation processes of slag, flux, and steel during heating and cooling, correlating them with theoretical predictions [ 22 , 23 , 24 ]. He developed a concentric solidification technology based on high-temperature confocal experiments, which can be used to study the surface tension, interface morphology, and high-temperature physical properties of metallic materials [ 25 , 26 ]. Hiroyuki et al discussed the mechanism of trapping and repelling inclusions using a moving solid–liquid interface during the solidification of Al-Sikilled steels [ 27 ].…”