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Research Article

A research on effect of process parameters on mechanical
properties of B4C reinforced aluminum matrix composites
fabricated by mechanical milling and hot press sintering route

Mutlu Karasoglu1, Serdar Karaoglu2, Taylan Sinan2, Tugce Tekin2

1Department of Mechanical Engineering, Eskisehir Technical University, Eskisehir, Turkey
2Department of Mechanical Engineering, Ege University, Izmir, Turkey

Keywords

Abstract


Powder metallurgy;


Metal matrix
composites;


Mechanical milling;


Mechanical
characterization

The aim of this study is to investigate the effect of mechanical milling and hot pressing process parameters on the density and strength of Al/B4C composites. For this research, powder mixtures consisting of Al matrix and B4C reinforcement particles were prepared by mechanical milling. Powder mixtures were milled for different times (5, 10, 15 and 20 hours) in a high energy planetary ball mill. In the milling vials, 10wt% B4C particle reinforcements were added to aluminum matrix powders. Average particle size of B4C and Al powders were 77μm and 63μm respectively. Powder mixtures were compacted as cylindrical samples by uniaxial hot pressing at 30 MPa. Specimens were hot pressed in nitrogen atmosphere at temperatures of 500-550-600 °C for 15-30- 45 minutes. Effects of milling and hot pressing variables on microstructure and mechanical properties were investigated by means of density and hardness measurements and compression tests. Microstructures of powders and compacts were investigated by microscopy techniques. Density measurements showed that compressibility of powders decreased with increasing milling times. Density, hardness and compressive yield strength values were increased with increasing hot pressing temperature and durations. © 2019 MIM Research Group. All rights reserved.

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09/03/2022 Outstanding Reviewer Award: The reviewers are the anonymous heroes of the publishing society. Reviewing manuscripts is not an easy task but it is critical to the advancement of scientific knowledge. Even if authors take credit for publishing papers, the recognition of the reviewers are highly limited for their work. Therefore, our journal announces the reviewers that participated in editorial processes of the submitted articles in a yearly basis. Now, we expand our efforts to appreciate the valuable contribution of our reviewers and start to give Outstanding Reviewer Awards.


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29/12/2021 Best Paper Award: According to the Advisory Board decision, the paper authored by Sahar Ismail, Wassim Raphael, Emmanuel Durand entitled as “Case study of the Beirut port explosion using 3D laser scan and nonlinear finite element model” is awarded the 2021 Best Paper Award of Research on Engineering Structures and Materials (RESM). We congratulate the authors and wish them a continued success.  



29/12/2021 Most Cited Paper Award: According to the Editorial Board evaluation, the paper authored by Sinan Kutluay, Orhan Baytar, Ömer Şahin entitled as “Adsorption kinetics, equilibrium and thermodynamics
of gas-phase toluene onto char produced from almond shells" is awarded the 2021 Most Cited Paper Award of Research on Engineering Structures and Materials (RESM). We congratulate the authors and wish them a continued success.


(More details of the news may be given in the News section)


For more see News...

LATEST AWARDS


2021 Best Paper Award:

The paper authored by Sahar Ismail, Wassim Raphael, Emmanuel Durand entitled as “Case study of the Beirut port explosion using 3D laser scan and nonlinear finite element model” is awarded the 



2021 Most Cited Paper Award:

The paper authored by Sinan Kutluay, Orhan Baytar, Ömer Şahin entitled as “Adsorption kinetics, equilibrium and thermodynamics of gas-phase toluene onto char produced from almond shells" is awarded the


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Last Update:

13.05.2022

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