Microstructure and mechanical properties of Al–Si cast alloy with additions of Zr–V–Ti

Shaha, S.K.; Czerwiński, F.; Kasprzak, W.; Friedman, J.; Chen, D.L.

doi:10.1016/j.matdes.2015.05.057

Cited by 55 publications

(22 citation statements)

References 66 publications

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“…For as-cast condition, as can be observed in Figure 7(a), additions of 0.3 wt% Ce+0.16 wt% Zr (C2 alloy) lead to a reduced yield strength due to the Ce-Cu reaction (intermetallic phases of Ce showed in figures 4(a) and (b)) possibly due to the diminished density of Al 2 Cu in a matrix formed after solidification. Besides, no meaningful improvements in YS for the as-cast condition at 20°C were detected, which is in accordance with the literature [5]. Therefore, high levels of YS at 20°C and age hardened condition of the Al matrix ( figure 7(a)) were achieved.…”

Section: Mechanical Propertiessupporting

confidence: 88%

“…More significant mechanical properties at high temperature due to Zr addition in cast Al-Si have been reported elsewhere [5,20,38]. Different behaviors detected in alloys C2 and C3 alloys might be related to the interaction of intermetallic phases with the Al matrix during the deformation process.…”

Section: Mechanical Propertiesmentioning

confidence: 68%

“…However, it is well known that cast aluminum alloys have operational limitations when used at temperatures up to 150°C due to the recognizable low thermal stability of Al 2 Cu and Mg 2 Si precipitates. In this context, it is clear that the main challenge for aluminum alloys is to keep their strength at temperatures above 200°C [4,5].…”

Section: Introductionmentioning

confidence: 99%

“…Basically, in order to improve the strength, particularly at high temperatures, alloying elements that exhibit both limited solid solubility and low diffusivity in Al must be added [19]. Recent studies on aluminum alloys modified with the minor Zr additions [3,5,16,[20][21][22]] demonstrated a significant enhancement in high-temperature mechanical properties due to the increase of volume fraction of highstable intermetallic phases formed in the microstructure.…”

Section: Introductionmentioning

confidence: 99%

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High-temperature mechanical properties of cast Al–Si–Cu–Mg alloy by combined additions of cerium and zirconium

Bevilaqua

Stadtlander

Froehlich

et al. 2020

Mater. Res. Express

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The main aim of this work is to investigate the effects of combinative Ce and Zr additions (0.3 wt% Ce+0.16 wt% Zr; 0.3 wt% Ce+0.27 wt% Zr and 0.3 wt% Ce+0.36 wt% Zr) on the microstructure and mechanical properties in cast Al-Si-Cu-Mg alloy. The microstructures features were investigated by optical microscope, scanning electron microscope and hardness measurements. The microstructural analysis has shown that the increase of Ce and Zr contents increases the volume fraction of intermetallics formed during the solidification leading to grain refinement and changes in silicon morphology of the as-cast microstructure. The intermetallics formed do not dissolve during the solution heating treatment (T6). The mechanical behavior at room and high temperatures (175, 210, 245 and 275°C) was determined from uniaxial tensile tests. The high thermal stability of Al-Si-Cu-La-Ce and Al-Si-Zr-Ti-Mg phases found in microstructure, in particular for the alloy containing 0.3 wt% Ce+0.27 wt% Zr, is responsible for the increase to 6.7% and 5.1% the ultimate strength at 210°C and 275°C respectively, compared with the standard alloy.

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Section: Mechanical Propertiessupporting

confidence: 88%

Section: Mechanical Propertiesmentioning

confidence: 68%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

High-temperature mechanical properties of cast Al–Si–Cu–Mg alloy by combined additions of cerium and zirconium

Bevilaqua

Stadtlander

Froehlich

et al. 2020

Mater. Res. Express

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“…From the tensile test data, the quality index, Q index , was also calculated using the following expression [13,18] : Q index = UST(MPa) +150log(%E)…”

Section: Mechanical Properties Testsmentioning

confidence: 99%

Evolution of microstructure and mechanical properties of A356 aluminium alloy processed by hot spinning process

Zhang

Chen

et al. 2017

China Foundry

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T he increasing demand for weight reduction in the automotive industry has resulted in a large research interest in aluminum alloys currently. A356 aluminum alloy is a kind of desired and commonly used material in the automotive field, such as suspension components and automotive wheels [1][2][3][4][5][6][7] . However, A356 products manufactured by casting process generally consist of primary dendrite with non-uniform solute distribution and defects, such as Fe-rich phases and porosities, which may lead to the reduction of service life [8] . Plastic deformation process is definitely an alternative to ameliorate some of the above negative aspects of cast alloys [9,10] . Casting-spinning technique is a kind of incremental forming technique employed on circular or tubular cast workpieces [11] . During the spinning process, a large amount of plastic deformation occurred. In recent years, the casting-spinning technique has been used in manufacturing automobile hubs. It has been validated that the application of this process is powerful to fulfill Abstract: The evolution of microstructure and mechanical properties of A356 aluminum alloy subjected to hot spinning process has been investigated. The results indicated that the deformation process homogenized microstructure and improved mechanical properties of the A356 aluminum alloy. During the hot spinning process, eutectic Si particles and Fe-rich phases were fragmented, and porosities were eliminated. In addition, recrystallization of Al matrix and precipitation of AlSiTi phases occurred. The mechanical property testing results indicated that there was a significant increase of ductility and a decrease of average microhardness in deformed alloy over die-cast alloy. This is attributed to uniform distribution of finer spherical eutectic Si particles, the elimination of casting defects and to the recrystallized finer grain structure.

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Correlation Among Microstructure, Mechanical Properties, and Thermal Stability of a Novel HPDC Al–12Si Alloy with Minor Sc

et al. 2022

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The microstructure, mechanical properties, and thermal stability of high‐pressure die casting (HPDC) Al–12Si–Sc alloy with 0.1 wt% Sc addition are investigated. Compared with the commercial A380 alloy, the alloy shows a significant refinement of α‐Al and eutectic Si microstructure. Meanwhile, β‐Fe with irregular morphology shows a smaller size and lower volume fraction in Al–12Si–Sc alloy. Upon as‐cast state, the elongation of the alloy is improved to 6.7% with an ultimate tensile strength of 332 MPa, which is a better combination of ductility and strength in the literature. After thermal exposure at 200 °C for 200 h, it retains tensile strength of 277 MPa and holds the microhardness up to 90 HV even exposure for 1000 h. These excellent properties may widen the application of HPDC Al–Si alloy for the cylinder block and cylinder head.

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Microstructure and mechanical properties of Al–Si cast alloy with additions of Zr–V–Ti

Cited by 55 publications

References 66 publications

High-temperature mechanical properties of cast Al–Si–Cu–Mg alloy by combined additions of cerium and zirconium

High-temperature mechanical properties of cast Al–Si–Cu–Mg alloy by combined additions of cerium and zirconium

Evolution of microstructure and mechanical properties of A356 aluminium alloy processed by hot spinning process

Correlation Among Microstructure, Mechanical Properties, and Thermal Stability of a Novel HPDC Al–12Si Alloy with Minor Sc

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