Effect of ZrO2 contents and ageing times on mechanical and electrical properties of Al–4.5 wt.% Cu nanocomposites prepared by mechanical alloying

Taha, Mohammed A.; El-Komy, G.M.; Mostafa, H. Abo; Gouda, El Said

doi:10.1016/j.matchemphys.2017.11.058

Cited by 24 publications

(3 citation statements)

References 38 publications

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“…These results show that pressing pressure and milling time should be increased to create a perfect structure for these samples. As a result, this study is in line with the literature [49][50][51][52][53][54][55][56][57][58][59][60][61] studies, and it has been clearly seen that the mechanical properties of the Al-4.5Cu/TiO2 composite powders produced by the mechanical alloying technique have improved compared to that studies conducted.…”

Section: Experimental Procedures and Processingsupporting

confidence: 91%

Mekanik alaşımlama ile üretilen Al4.5Cu/TiO2 kompozitlerinin mikroyapı, sertlik ve termal özellikleri

Okumuş¹,

KAYA²,

Göğebakan³

2024

Politeknik Dergisi

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Al4.5Cu/TiO2 composites were fabricated from their elemental powders by the mechanical alloying method. Microstructural and thermal properties of the composites were investigated by a combination of differential thermal analysis (DTA), scanning electron microscopy with energy dispersive X-ray detection (SEM-EDX), and X-ray diffraction (XRD). Microstructural evolutions, phase transformations, and crystallite size changes were investigated depending on the milling time. XRD and SEM results showed that there were a more homogeneous structure and shrinkage in grain size due to the increased milling time. The DTA results showed an endothermic peak of around 650 oC which indicates the melting temperature of Al. Besides, the mechanical properties of the pressed and sintered composites were investigated by Vickers micro-hardness testing. The results showed that microhardness values significantly increased as milling time increased from 5h to 10h. The maximum microhardness value of 173±10 HV was obtained for Al4.5Cu with 20 wt% TiO2 composite after milling for 10h.

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Section: Experimental Procedures and Processingsupporting

confidence: 91%

Mekanik alaşımlama ile üretilen Al4.5Cu/TiO2 kompozitlerinin mikroyapı, sertlik ve termal özellikleri

Okumuş¹,

KAYA²,

Göğebakan³

2024

Politeknik Dergisi

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“…It is estimated that the reduction incompressibility of the powders obtained after 100 h of grinding is due to the increase in the viscosity of the powders and the fragile Al 2 Cu-phase. It has been reported [48][49][50][51] that Al 2 Cu-phase formation significantly reduces the hardness. Also, the surface images of the sintered samples taken by POM are shown in Fig.…”

Section: Resultsmentioning

confidence: 99%

Characterization of complex Al60Cu20Ni15Ti5 alloy produced by mechanical alloying and sintering

Okumuş¹,

Demir²,

Göğebakan³

2020

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In this work, microstructural and thermal properties of the mechanically alloyed complex Al60Cu20Ni15Ti5 alloy have been investigated by a combination of differential thermal analysis (DTA), X-ray diffraction (XRD), and scanning electron microscope with energy dispersive X-ray detection (SEM/EDX). The results showed that the new Al60Cu20Ni15Ti5 alloy in metastable multiphase formation was produced by milling for 50 h. As the milling time increased from 50 h to 100 h, more homogeneous structure and intermetallic phases such as Al3Ni and Al2Cu were observed, and also grain size decreased. Besides, the maximum microhardness value in pressed and sintered alloy samples was found to be 560 HV.

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“…A very usual precipitate or intermetallic formed in this family is the CuAl 2 . This phase has the ability to provide a primary strengthening to the ductile AA matrix [6][7][8][9][10] .…”

Section: Introductionmentioning

confidence: 99%

Recrystallization Study of the Al4.5wt%Cu Alloy Conventionally and Unidirectionally Solidified, Deformed and Heat Treated

et al. 2020

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The Al4.5wt%Cu is an aeronautical and automobile alloy with extensive use in industry for structural purposes. The aim of this work was to evaluate two different solidification processes of the Al4.5wt%Cu alloy, conventional and unidirectional, as well as its recrystallization process. Firstly, the Al4.5wt%Cu alloy was deformed by cold rotary forging and then heat treated at temperatures that varied from 250 to 450 °C. The samples for analysis were obtained after 54, 76 and 91% of reductions in area. Tests of optical microscopy, scanning electron microscopy and Vickers microhardness were performed to evaluate the recrystallization process. The results indicated that the recrystallization started at 350 ºC, being that the conventional samples presented full recrystallization after 5 minutes, while the unidirectional samples presented only partial recrystallization. In general, both solidification processes presented similar results for all of the analysis performed.

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Effect of ZrO2 contents and ageing times on mechanical and electrical properties of Al–4.5 wt.% Cu nanocomposites prepared by mechanical alloying

Cited by 24 publications

References 38 publications

Mekanik alaşımlama ile üretilen Al4.5Cu/TiO2 kompozitlerinin mikroyapı, sertlik ve termal özellikleri

Mekanik alaşımlama ile üretilen Al4.5Cu/TiO2 kompozitlerinin mikroyapı, sertlik ve termal özellikleri

Characterization of complex Al60Cu20Ni15Ti5 alloy produced by mechanical alloying and sintering

Recrystallization Study of the Al4.5wt%Cu Alloy Conventionally and Unidirectionally Solidified, Deformed and Heat Treated

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