The Effect of the Erbium Content on the Microstructure and Mechanical Property of 6061 Aluminum Alloys

Lv, Wen Jian; Li, Bo Long; Qi, Peng; Nie, Zuo Ren

doi:10.4028/www.scientific.net/msf.898.35

Cited by 2 publications

(2 citation statements)

References 4 publications

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“…10, tensile testing is performed, and it is found that with the increase in Er, the tensile strength of aluminum alloy treated at 400 °C is not reduced within the error range but slightly increases (~ 210 MPa). Nie et al studied the effect of Er on the mechanical properties of Al-5 Mg alloys [26,27] and found that increasing the Er content to a certain range considerably enhances the strength of high-magnesium aluminum alloy. An Er content that exceeds 0.4 wt%, however, ceases to improve strength.…”

Section: Resultsmentioning

confidence: 99%

Synergistic Balance of Strength and Corrosion Resistance in Al–Mg–Er Alloys

Zhou¹,

Zhang²,

Zhou

et al. 2020

Acta Metall. Sin. (Engl. Lett.)

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High-strength, corrosion-resistant, and lightweight Al-Mg alloys perform an important function in harsh coastal service environments. Corrosion resistance is generally inversely correlated with strength; hence, it is difficult to simultaneously optimize both. In this study, a low-magnesium Er-containing Al-based alloy that is stronger and more corrosion resistant than Al-based alloys have been reported. The alloy contains Er, and the precipitation of Al 3 Er within a face-centered cubic matrix is obtained by a series of smelting-casting, heat treatment, and rolling processes. It is presumed that the strengthening phase of Al 3 Er pinning dislocations improves alloy strength. It also increases the recrystallization temperature of cold-rolled matrix and induces the distribution of small-angle grain boundaries, thus allowing the alloy to achieve excellent environmental corrosion resistance. As a result, strength and corrosion resistance are simultaneously improved.

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Section: Resultsmentioning

confidence: 99%

Synergistic Balance of Strength and Corrosion Resistance in Al–Mg–Er Alloys

Zhou¹,

Zhang²,

Zhou

et al. 2020

Acta Metall. Sin. (Engl. Lett.)

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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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The Effect of the Erbium Content on the Microstructure and Mechanical Property of 6061 Aluminum Alloys

Cited by 2 publications

References 4 publications

Synergistic Balance of Strength and Corrosion Resistance in Al–Mg–Er Alloys

Synergistic Balance of Strength and Corrosion Resistance in Al–Mg–Er Alloys

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

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