Thermal analysis and microstructural characterization of Mg-Al-Zn system alloys

Modern Technologies in Industrial Engineering 2015

Król, M.^1 ; Taski, T.^1 ; Sitek, W.^1

Institute of Engineering Materials and Biomaterials, Faculty of Mechanical Engineering, Silesian University of Technology, ul. Konarskiego 18a, Gliwice

44-100, Poland^1

关键词: Characteristic temperature;    Derivative analysis;    Energy dispersive X ray spectroscopy;    Micro-structural characterization;    Microstructural assessments;    Second derivatives;    Solidification behaviors;    Solidification rate;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/95/1/012006/pdf
DOI  :  10.1088/1757-899X/95/1/012006

来源: IOP

【 摘 要 】

The influence of Zn amount and solidification rate on the characteristic temperature of the evaluation of magnesium dendrites during solidification at different cooling rates (0.6-2.5°C) were examined by thermal derivative analysis (TDA). The dendrite coherency point (DCP) is presented with a novel approach based on second derivative cooling curve. Solidification behavior was examined via one thermocouple thermal analysis method. Microstructural assessments were described by optical light microscopy, scanning electron microscopy and energy dispersive X-ray spectroscopy. These studies showed that utilization of d2T/dt2vs. the time curve methodology provides for analysis of the dendrite coherency point.