M. Alizadeh

Department of Metals, International Center for Science, High Technology & Environmental Sciences,Kerman,Iran.

[ 1 ] - A simple Analytical model for solidification cooling rate based on the local heat flux density

A new simple analytical model for prediction of cooling rate in the solidification process based on the local heat flux density extracted during solidification is introduced. In the modeling procedure, a solidifying control volume is considered in the mushy zone in which a heat balance equation is used to derive the present model. As the local heat flux density is a measurable parameter, the pr...

[ 2 ] - Characterization and Catalytic Behaviour of Nanostructured Iron Oxide Powder from Waste Pickle Liquor of Steel Industry

Nanostructured iron oxide powder that has been recovered from waste pickling liquor unit of steel industry was studied for oxidation catalytic applications. In this research, the powder was characterized by X-ray diffraction (XRD) and transition electron microscopy (TEM) for determination of phase structure, morphology and particle size. Furthermore, the specific surface area of the powder was ...

[ 3 ] - Using Finite Point Method for the Numerical Simulation of Heat Transfer Coupled with Microsegregation during Continuous Casting

In the present work, a meshless method called Finite Point Method (FPM) is developed to simulate the solidification process of a continuously cast steel bloom in both primary and secondary cooling regions. The method is based on the use of a weighted least-square interpolation procedure. A transverse slice of the bloom moving at casting speed is considered as the computational domain and two di...

[ 4 ] - تولید و مشخصه یابی کامپوزیت نانوساختار Al-Mg-Zn/ 3 wt.% Al2O3 بوسیله زمینه پیش آسیاب شده توسط آلیاژسازی مکانیکی

Al-Zn-Mg/3 wt-% Al2O3 nanostructured composite powder was synthesized through Mechanical Alloying (MA). At first, the 7014 alloy matrix constituents were milled in a planetary ball mill for 20 hours. Then, 3 wt.% µ-Al2O3 particles were  added to the pre-milled matrix and the nanostructured composite powder was produced at different MA times to investigate the effects of MA time ...