Effect of solidification sequence on the microstructure and mechanical properties of die-cast Al–11Si–2Cu–Fe alloy

Sui, Yudong; Wang, Qudong; Yan, Bing; Zhang, Li; Jiang, Haiyan; Ding, Wei

doi:10.1016/j.jallcom.2015.07.187

Cited by 19 publications

(7 citation statements)

References 33 publications

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“…Some Fe and Mn are added into these existing alloys, forming α-AlFeMnSi intermetallic compound, which further enhances the strength of these alloys. Moreover, it was found that the addition of Cu into Al-Si alloys or addition of Zn into Al-Mg alloys lead to the yield strength close to or greater than 200 MPa, due to a combination of solute solution strengthening of α-Al and second phase strengthening of copper-/zinccontained intermetallic compound [2,36,41]. Although these die-cast alloys have yield strengths close to or over 200 MPa, the elongation to failure is relatively small (e.g.…”

Section: Relationship Between Microstructure and Mechanical Propertiesmentioning

confidence: 99%

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Microstructure and mechanical properties of new die-cast quaternary Al-Cu-Si-Mg alloys

Cai

Mendis

Chang

et al. 2021

Materials Science and Engineering: A

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Section: Relationship Between Microstructure and Mechanical Propertiesmentioning

confidence: 99%

“…Although these die-cast alloys have yield strengths close to or over 200 MPa, the elongation to failure is relatively small (e.g. below 3%), resulting from increased volume fraction of copper-/zinc-contained intermetallic compounds [2,36,40,41].…”

Section: Relationship Between Microstructure and Mechanical Propertiesmentioning

confidence: 99%

Microstructure and mechanical properties of new die-cast quaternary Al-Cu-Si-Mg alloys

Cai

Mendis

Chang

et al. 2021

Materials Science and Engineering: A

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“…In recent years, Al/steel bimetallic has been widely studied [ 1 , 2 , 3 , 4 , 5 , 6 ] because it combines the excellent characteristics of aluminum alloy and steel [ 7 , 8 , 9 , 10 , 11 , 12 , 13 , 14 ], such as high intensity of steel and lower density of aluminum alloy. Therefore, it is widely used in the field of fuel economy and is lightweight.…”

Section: Introductionmentioning

confidence: 99%

Interface Microstructure and Mechanical Properties of Al/Steel Bimetallic Composites Fabricated by Liquid-Solid Casting with Rare Earth Eu Additions

et al. 2022

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To improve the Al/Steel bimetallic interface, Eu was firstly added to the Al/Steel bimetallic interface made by liquid-solid casting. The effects of Eu addition on the microstructure, mechanical capacities, and rupture behavior of the Al/Steel bimetallic interface was studied in detail. As the addition of 0.1 wt.% Eu, the morphology of eutectic Si changed from coarse plate-like to fine fibrous and granular in Al-Si alloys, and the average thickness of the intermetallic compounds layer decreased to a minimum value of 7.96 μm. In addition, there was a more sudden drop of Fe in steel side and the Si in Al side was observed to be more than the other conditions. The addition of Eu did not change the kinds of intermetallic compounds in the Al/steel reaction layer, which was composed of Al5Fe2, τ1-(Al, Si)5Fe3, Al13Fe4, τ5-Al7Fe2Si, and τ6-Al9Fe2Si2 phases. The addition of the element Eu did not change the preferential orientation of the Al5Fe2, τ1-(Al, Si)5Fe3, Al13Fe4, τ5-Al7Fe2Si, and τ6-Al9Fe2Si2 phases, but refined the grain size of each phase and decreased the polar density of Al5Fe2 phase. Eu was mainly enriched in the front of the ternary compound layer (τ6-Al9Fe2Si2) near the Al side and steel matrix. The Fe and Al element distribution area tended to narrow in the interface after the addition of 0.1 wt.% Eu, which is probably because that Eu inhibits the spread of Al atoms along the c-axis direction of the Al5Fe2 phase and the growth of Al13Fe4, τ5-Al7Fe2Si, and τ6-Al9Fe2Si2 phases. When the Eu content was 0.1 wt.%, the shear strength of the Al/Steel bimetal achieved a maximum of 31.21 MPa, which was 47% higher than the bimetal without Eu.

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“…For many years, the phenomenological study about microstructure and mechanical properties continues to cover a variety of die cast alloys, including Al-Si, Al-Si-Cu, Al-Mg-Si alloys [11,12] and other alloys [13]. The literatures on the heterogeneity subject largely involve the effect of defects, gating system and casting parameters [6,14,15], solidification and microstructural evolution [16,17], the effect of skin [18], the identification of various phases [19,20], concentration profiles in the castings [21], quality mapping [22,23], the relationship between microstructure and mechanical properties under different casting conditions and under different heat treatments [24,25]. Because of the heterogeneity in as-cast microstructure, the initialisation of deformation and the deformation levels at different locations is likely to be different.…”

Section: Introductionmentioning

confidence: 99%

Macro-heterogeneities in microstructures, concentrations, defects and tensile properties of die cast Al–Mg–Si alloys

Yang

Cui

et al. 2016

Materials Science and Technology

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The heterogeneities in tensile properties, microstructural characteristics, solute concentrations, and defects levels were studied for the castings with different thicknesses made by high pressure die-cast Al-Mg-Si alloys. For the local mechanical properties in the die-castings, the casting skin provided the highest, whereas the casting centre provided the lowest yield strength, UTS and elongation. The yield strength, UTS and elongation were significantly decreased towards the casting centre. The microstructural heterogeneity is characterised by the segregation of coarse fragmented dendrites, the reduction of solute concentrations of Mg and Si, and the increase of porosity level from the surface to the centre of castings. The growth velocities of eutectic α-Al phase estimated using the Jackson-Hunt model confirm that the growth variation is larger in the thin castings than that in thick castings.

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Effect of solidification sequence on the microstructure and mechanical properties of die-cast Al–11Si–2Cu–Fe alloy

Cited by 19 publications

References 33 publications

Microstructure and mechanical properties of new die-cast quaternary Al-Cu-Si-Mg alloys

Microstructure and mechanical properties of new die-cast quaternary Al-Cu-Si-Mg alloys

Interface Microstructure and Mechanical Properties of Al/Steel Bimetallic Composites Fabricated by Liquid-Solid Casting with Rare Earth Eu Additions

Macro-heterogeneities in microstructures, concentrations, defects and tensile properties of die cast Al–Mg–Si alloys

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