Effect of Erbium Addition on the Microstructure and Mechanical Properties of Aluminium Alloy

Ahmad, Rohanin; Wahab, Norhaliza; Hasan, Sulaiman; Harun, Zawati; Rahman, M. M.; Shahizan, N.R.

doi:10.4028/www.scientific.net/kem.796.62

Cited by 6 publications

(4 citation statements)

References 11 publications

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“…Lightweight materials such as aluminum alloys, of which the strength to weight ratio is superior to that of steel, have been widely applied on automotive parts to reduce their weight [1][2][3][4]. However, the surface roughness of aluminum alloy has a significant influence on the performance of mechanical parts as well as production cost [5].…”

Section: Introductionmentioning

confidence: 99%

Research on the Performance of Diamond-Like Carbon Coatings on Cutting Aluminum Alloy: Cutting Experiments and First-Principles Calculations

et al. 2021

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The purpose of this study is to investigate the cutting performance of amorphous carbon (a-C) coatings and hydrogenated amorphous carbon (a-C:H) coatings on machining 2A50 aluminum alloy. First-principles molecular dynamics simulation was applied to investigate the effect of hydrogen on the interaction between coatings and workpiece. The cross-section topography and internal structure of a-C and a-C:H films were characterized by field emission scanning electron microscopy and Raman spectroscopy. The surface roughness of the deposited films and processed workpiece were measured using a white light interferometer. The results show that the a-C-coated tool had the highest service life of 121 m and the best workpiece surface quality (Sq parameter of 0.23 μm) while the workpiece surface roughness Sq parameter was 0.35 and 0.52 μm when machined by the a-C:H-coated and the uncoated tool, respectively. Meanwhile, the build-up edge was observed on the a-C:H-coated tool and a layer of aluminum alloy was observed to have adhered to the surface of the uncoated tool at its stable stage. An interface model that examined the interactions between H-terminated diamond (111)/Al(111) surfaces revealed that H atoms would move laterally with the action of cutting heat (549 K) and increase the interaction between a-C:H and Al surfaces; therefore, Al was prone to adhere to the a-C:H-coated tool surface. The a-C coating shows better performance on cutting aluminum alloy than the a-C:H coating.

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Section: Introductionmentioning

confidence: 99%

Research on the Performance of Diamond-Like Carbon Coatings on Cutting Aluminum Alloy: Cutting Experiments and First-Principles Calculations

et al. 2021

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“…In the case of Mg-Al alloys, erbium addition has improved purity of the alloy, refined the grains, and exhibited more uniform grain distribution. Overall, mechanical properties were improved [33,34]. Mg-Er alloys were investigated as well, although in larger quantities in terms of atomic composition [32].…”

Section: Introductionmentioning

confidence: 99%

“…Among other materials known from the literature, magnesium-based materials constitute promising alternatives for medical applications, due to their characteristics such as good mechanical and biological properties, corrosion resistance and the reactive ability to interact with other elements. Yet there are not many advanced studies on the influence of Er on the properties of cast magnesium-based alloys in the literature [32][33][34].…”

Section: Introductionmentioning

confidence: 99%

Bulletin of the Polish Academy of Sciences: Technical Sciences

Hrapkowicz,

Lesz,

Kremzer

et al. 2021

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Magnesium-based materials constitute promising alternatives for medical applications, due to their characteristics, such as good mechanical and biological properties. This opens many possibilities for biodegradable materials to be used as less-invasive options for treatment. Degradation is prompted by their chemical composition and microstructure. Both those aspects can be finely adjusted by means of proper manufacturing processes, such as mechanical alloying (MA). Furthermore, MA allows for alloying elements that would normally be really hard to mix due to their very different properties. Magnesium usually needs various alloying elements, which can further increase its characteristics. Alloying magnesium with rare earth elements is considered to greatly improve the aforementioned properties. Due to that fact, erbium was used as one of the alloying elements, alongside zinc and calcium, to obtain an Mg 64 Zn 30 Ca 4 Er 1 alloy via mechanical alloying. The alloy was milled in the SPEX 8000 Dual Mixer/Mill high energy mill under an argon atmosphere for 8, 13, and 20 hours. It was assessed using X-ray diffraction, energy dispersive spectroscopy and granulometric analysis as well as by studying its hardness. The hardness values reached 232, 250, and 302 HV, respectively, which is closely related to their particle size. Average particle sizes were 15, 16, and 17 μm, respectively.

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“…And Tantiwaitayaphan et al [16] also reported that the addition of Er can reduce the degree of subcooling and cause the morphology of eutectic silicon to change. These research show that the rare earth element Er can improve the morphology of the secondary phase and improve the mechanical properties of the aluminum alloys [17][18][19][20][21], but it has not been proposed which kind of particles the Er element will form with the Al-Si alloys to affect the morphology of the secondary phase.…”

Section: Introductionmentioning

confidence: 99%

Investigation on Microstructures and Mechanical Properties of the Hypoeutectic Al-10Si-0.8Fe-XEr Alloy

et al. 2020

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In this paper, the effect of Er addition (0.2, 0.5, 0.65, 0.8, 1.0, and 1.5 wt. %) on the microstructure evolution and tensile properties of as-cast hypereutectic Al-10Si-0.8Fe alloy was investigated. The phases and their morphologies in these alloys were identified by XRD and SEM equipped with EDX with the help of metallographic analysis techniques; the length of the secondary phase (LSP) and secondary dendrite arm spacing (SDAS) of α-Al grain were quantified. The results indicated that the second phases (primary Si, eutectic Si, and iron-rich phases) and α-Al grain were significantly refined when the addition of Er increased from 0 to 0.8 wt. %. The mean LSP and SADS values were decreased to a minimum value when the Er addition reached 0.8 wt. %. However, the second phases and α-Al grain became coarser when the level of Er increased more than 0.8 wt. %. The analysis of XRD shows that Er mainly exists in the form of Er2Si compound. The microstructure modification also has a significant effect on the mechanical properties of the alloy. The yield strength (YS), ultimate tensile strength (UTS), and elongation (EL) increase from 52.86 MPa, 163.84 MPa, and 3.45% to 71.01 MPa, 163.84 MPa, and 5.65%, respectively. From the fracture surface, the promotions of mechanical properties are due to the dispersion and pinning reinforcement caused by the Er2Si phase.

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Effect of Erbium Addition on the Microstructure and Mechanical Properties of Aluminium Alloy

Cited by 6 publications

References 11 publications

Research on the Performance of Diamond-Like Carbon Coatings on Cutting Aluminum Alloy: Cutting Experiments and First-Principles Calculations

Research on the Performance of Diamond-Like Carbon Coatings on Cutting Aluminum Alloy: Cutting Experiments and First-Principles Calculations

Bulletin of the Polish Academy of Sciences: Technical Sciences

Investigation on Microstructures and Mechanical Properties of the Hypoeutectic Al-10Si-0.8Fe-XEr Alloy

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