2025 : 4 : 21
Gholam Hossein Majzoobi

Gholam Hossein Majzoobi

Academic rank: Professor
ORCID:
Education: PhD.
ScopusId: 6507393695
HIndex:
Faculty: Faculty of Engineering
Address:
Phone:

Research

Title
Characterization of a functionally graded material produced using a new designed blender
Type
JournalPaper
Keywords
blender, Mg-TiO2 FGM, dynamic compaction, powder metallurgy, split Hopkinson bar
Year
2024
Journal PHYSICA SCRIPTA
DOI
Researchers ، Gholam Hossein Majzoobi ، d r

Abstract

One of the techniques widely used for fabrication of FGMs (Functionally Graded Materials) is powder metallurgy. However, producing aFGMwith smooth gradient in its constituents mixture has remained a challenge yet to be met. The purpose of this research is design and manufacturing a blender for producing a functionally graded material with smooth gradient of its constituent materials. The blender was used to mix magnesium and titanium dioxide to produce Magnesium/titanium dioxide FGMs. The powder mixture was then compacted by Instron, drop hammer, and split Hopkinson bar at 600 °C. The microstructure and relative density of the functionally graded samples fabricated at different strain rates were studied in this work. SEM images clearly demonstrated a continuous and functional distribution ofMgand TiO2 particles in the producedFGMsamples. It was also shown that increasing the compaction loading rate resulted in a higher relative density in theFGMsamples. The maximum relative density (92%) was observed for the samples produced by Hopkinson bar. This level of density was7%and 17% higher than the densities of the samples fabricated using drop hammer and Instron, respectively. The improvement of relative density in dynamic compaction methods is attributed to the increased compaction pressure and process being adiabatic.