The porosity, microstructure, and hardness of Al-Mg composites reinforced with micro particle SiC/Al2O3 produced using powder metallurgy

Tosun, Gül; Kurt, Mehmet Ali

doi:10.1016/j.compositesb.2019.106965

Cited by 89 publications

(20 citation statements)

References 23 publications

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“…The wettability of the additives decreases critically and pore formation occurs during sintering within the structure. 39,40 Hardness and tensile strength…”

Section: Microstructurementioning

confidence: 99%

The effect of nanoparticle content on the microstructure and mechanical properties of ZA27-Al₂O₃-Gr hybrid nanocomposites produced by powder metallurgy

Çelebi

Güler

Çanakçı

et al. 2021

Journal of Composite Materials

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In this study, ZA27-Al2O3-Gr hybrid nanocomposite materials (HNMs) were prepared by powder metallurgy method including mechanical-milling and hot-pressing (HP). The physical and mechanical properties of ZA27-Al2O3-Gr HNMs have been investigated with the primary objective of understanding the influence of the alumina (Al2O3) nanoparticle (n-Al2O3) reinforcement. The density, hardness and tensile strength tests of HNMs carried out to determine the physical and mechanical properties of ZA27-Al2O3-Gr HNMs. Scanning Electron Microscope (SEM) is used for the microstructural evolution of the HNMs. As a result of microstructure examination results, n-Al2O3 were observed around grain boundary while the graphite (Gr) nanoparticles (n-Gr) were dispersed homogeneous throughout ZA27 matrix. Relative density values decreased with the increase of nanoparticle reinforcement ratio from 1%vol to 4%vol., while an increase in porosity values was detected for HNMs. Moreover, the results showed that the addition of n-Al2O3 significantly improved the mechanical properties of the HNMs. Additionally, the HNMs reinforced with 4%vol. n-Al2O3 and 1%vol. n-Gr exhibited the highest tensile strength of about 158 MPa and hardness of 160 HB in comparison with the other HNMs reinforced with different content of n-Al2O3.

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“…The wettability of the additives decreases critically and pore formation occurs during sintering within the structure. 39,40 Hardness and tensile strength…”

Section: Microstructurementioning

confidence: 99%

The effect of nanoparticle content on the microstructure and mechanical properties of ZA27-Al₂O₃-Gr hybrid nanocomposites produced by powder metallurgy

Çelebi

Güler

Çanakçı

et al. 2021

Journal of Composite Materials

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“…This reduction in hardness over 20Mg-20Zn-20Fe-20Cu-20Co may be a result of the increasing magnesium content in the alloy. The high hardness of 20Mg-20Zn-20Fe-20Cu-20Co (286.08 HV) is due to the presence of an intermetallic phase and high density [30]. The Co-Fe phase is an intermetallic phase present at the grain boundaries of the 20Mg-20Zn-20Fe-20Cu-20Co alloy, resulting from the predominance of Co and Fe elements.…”

Section: Mechanical Properties Of Mg-zn-fe-cu-co Alloysmentioning

confidence: 99%

STUDY TO MICROSTRUCTURE AND MECHANICAL PROPERTIES OF Mg-Zn-Fe-Cu-Co AS HIGH ENTROPY ALLOYS FOR URETERAL IMPLANT APPLICATION

Ashari

2021

metal.

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Magnesium and its alloys are promising candidates for degradable materials with good biocompatibility. Alloys based on Mg-Zn-Fe-Cu-Co compositions were designed using the equiatomic method of high entropy alloy. This paper discusses the microstructure and mechanical properties of these new high entropy alloys. Pure Magnesium (60 µm), Zinc (45 µm), Fe (10 µm), Cu (63 µm), and Co (1 µm) powder were mixed and milled using a shaker mill at 700 rpm for the 1800s. The resulting milled powders were compacted and sintered at 300 MPa for 180s and 600 MPa for 120s. Sintering was performed at 700oC for 2 hours in a tube vacuum furnace at a 5 °C/min heating rate under a high purity argon atmosphere. Microstructural analyses and mechanical tests were performed based on the American standard of testing and measurement. The alloys were basically multiphase and crystalline. The 20Mg-20Zn-20Fe-20Cu-20Co alloy consisted of the HCP phase and cubic phase. The physical and mechanical properties of Mg-Zn-Fe-Cu-Co were affected by the magnesium content in the matrix alloys. The presence of pores indicated uncomplete compaction and sintering process. The alloys have a medium hardness of between 286.06 HV - 80.98 HV, while the densities of the alloys were relatively moderate in the range of 3.057 g.cm-3 to 1.71 g.cm-3. Solid solution and intermetallic precipitation strengthening were believed the primary strengthening mechanics of the alloys. It is concluded that high entropy is a promising method for the processing of Mg alloys. Alloy with a chemical composition of 20Mg-20Zn-20Fe-20Cu-20Co had optimal mechanical properties that meet the minimum requirements of high entropy alloys as candidates for ureteral implant applications.

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“…In addition, a modification of the SiC interface increased the wear resistance of composites by preventing the formation of interfacial cracks between the matrix and reinforcing particles. Tosun et al [ 8 ] tested Al-Mg MMC reinforced with microdimensional SiC and Al 2 O 3 particles at different volume ratios. The highest porosity coefficient for all test conditions was 17%; the lowest porosity coefficient was 5.4%.…”

Section: Introductionmentioning

confidence: 99%

On Investigating the Microstructural, Mechanical, and Tribological Properties of Hybrid FeGr1/SiC/Gr Metal Matrix Composites

2021

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In recent years, studies of different properties of hybrid metal matrix composites, as well as very detailed issues, have been published. In this article, ready-made iron, graphite, and silicon carbide powders were used to produce the base material and composites. An analysis of some microstructural and mechanical properties, as well as the tribological behavior of metal matrix composites (MMCs), based on FeGr1 sintered material with the single and hybrid addition of a silicon carbide and graphite was undertaken. During the study, the flexural and compressive strength of MMCs were analyzed and changes of the momentary coefficient of friction, the temperature of friction, as well as wear rates of the MMCs tested were monitored. Based on the results, it was revealed that wear rates decreased 12-fold in comparison to the base material when SiC or SiC + Gr were added. Further research into MMCs with ceramic particle additives is proposed.

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The porosity, microstructure, and hardness of Al-Mg composites reinforced with micro particle SiC/Al2O3 produced using powder metallurgy

Cited by 89 publications

References 23 publications

The effect of nanoparticle content on the microstructure and mechanical properties of ZA27-Al₂O₃-Gr hybrid nanocomposites produced by powder metallurgy

The effect of nanoparticle content on the microstructure and mechanical properties of ZA27-Al₂O₃-Gr hybrid nanocomposites produced by powder metallurgy

STUDY TO MICROSTRUCTURE AND MECHANICAL PROPERTIES OF Mg-Zn-Fe-Cu-Co AS HIGH ENTROPY ALLOYS FOR URETERAL IMPLANT APPLICATION

On Investigating the Microstructural, Mechanical, and Tribological Properties of Hybrid FeGr1/SiC/Gr Metal Matrix Composites

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The porosity, microstructure, and hardness of Al-Mg composites reinforced with micro particle SiC/Al2O3 produced using powder metallurgy

Cited by 89 publications

References 23 publications

The effect of nanoparticle content on the microstructure and mechanical properties of ZA27-Al2O3-Gr hybrid nanocomposites produced by powder metallurgy

The effect of nanoparticle content on the microstructure and mechanical properties of ZA27-Al2O3-Gr hybrid nanocomposites produced by powder metallurgy

STUDY TO MICROSTRUCTURE AND MECHANICAL PROPERTIES OF Mg-Zn-Fe-Cu-Co AS HIGH ENTROPY ALLOYS FOR URETERAL IMPLANT APPLICATION

On Investigating the Microstructural, Mechanical, and Tribological Properties of Hybrid FeGr1/SiC/Gr Metal Matrix Composites

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The effect of nanoparticle content on the microstructure and mechanical properties of ZA27-Al₂O₃-Gr hybrid nanocomposites produced by powder metallurgy

The effect of nanoparticle content on the microstructure and mechanical properties of ZA27-Al₂O₃-Gr hybrid nanocomposites produced by powder metallurgy