Mechanical Characterization and Microstructure analysis of Al C355.0 by Sand Casting, Die Casting and Centrifugal Casting Techniques.

Santosh, M.V.; Suresh, K.R.; Aithal, Kiran

doi:10.1016/j.matpr.2017.08.056

Cited by 14 publications

(5 citation statements)

References 5 publications

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“…at different pressure levels. The specimens were sectioned to examine the porosity distribution [36]. The phases present in the metallographic microstructure are mainly α-Al and the eutectic mixture.…”

Section: Micro-and Macrostructurementioning

confidence: 99%

The Effect of Vacuum on the Mechanical Properties of Die Cast Aluminum AlSi9Cu3(Fe) Alloy

Szalva

Orbulov

2019

Inter Metalcast

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High pressure die casting (HPDC) is a widely used casting technology for product that is made of light metal such as aluminum alloy. During die casting process the molten metal is injected into a mold at high speed and solidify under high pressure. The amount of porosity in the cast part is an important question. Lots of technologies have been developed to minimize porosities, for example, vacuum-assisted high pressure die casting process (VPDC). In this paper, AlSi9Cu3(Fe) aluminum alloy castings were produced by conventional HPDC with atmospheric venting and VPDC process under three different absolute cavity air pressures of 170 mbar, 90 mbar and 70 mbar at the cavity. The influence of absolute cavity air pressure on the porosity and on the mechanical properties of the castings were investigated and compared with conventional HPDC casting method. The results of the present study proved that the amount of porosity and the pore sizes in the castings can be significantly reduced from 1.10% at an atmospheric level to 0.47% at 70 mbar. This corresponds to 57% reduction. As a result, the mechanical properties are improved significantly, particularly, the tensile strength from 271.6 MPa to 299.8 MPa, which corresponds to 10% increment and the elongation from 1.66% to 2.49%, which shows 50% increment. At lower absolute cavity air pressure the entrapped gases become the final gas porosities in the die castings and shows solidification shrinkage form inspected with scanning electron microscopy. In general, lower cavity air pressure contributes to reduce the pores, which improve the mechanical properties of die casting.

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Section: Micro-and Macrostructurementioning

confidence: 99%

The Effect of Vacuum on the Mechanical Properties of Die Cast Aluminum AlSi9Cu3(Fe) Alloy

Szalva

Orbulov

2019

Inter Metalcast

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“…In addition, it can find a prominent place in automotive industry, where light-weighting at a lower cost is a beneficial advantage. Some of the remarkable advantages of die-casting over conventional sand casting are an increase in productivity, dimensional accuracy of as-cast components, and better mechanical properties as a result of improved microstructural features [30].…”

Section: Introductionmentioning

confidence: 99%

Mechanical and Tribological Behavior of Gravity and Squeeze Cast Novel Al-Si Alloy

Chandra

Krishna

Ravi

et al. 2022

Metals

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The automotive industry traditionally reduces weight primarily by value engineering and thickness optimization. However, both of these strategies have reached their limits. A 6% reduction in automotive truck mass results in a 13% improvement in freight mass. Aluminum alloys have lower weight, relatively high specific strength, and good corrosion resistance. Therefore, the present manuscript involves manufacturing Al-based alloy by squeeze casting. The effect of applied pressure during the squeeze cast and gravity cast of a novel Al-Si alloy on microstructural evolution, and mechanical and wear behavior was investigated. The results demonstrated that squeeze casting of the novel Al-Si alloy at high-pressure exhibits superior mechanical properties and enhanced wear resistance in comparison to the gravity die-cast (GDC) counterpart. Squeeze casting of this alloy, at high pressure, yields fine dendrites and reduced dendritic arm spacing, resulting in grain refinement. The finer dendrites and reduced dendritic arm spacing in high-pressure squeeze cast alloy than in the GDC alloy were due to enhanced cooling rates observed during the solidification process, as well as the applied squeeze pressure breaks the initial dendrites that started growing during the solidification process. Reduced casting defects in the high-pressure squeeze cast alloy led to a reduced coefficient of friction, resulting in improved wear resistance even at higher loads and higher operating temperatures. Our results demonstrated that squeeze casting of the novel Al-Si alloy at high-pressure exhibits a 47% increase in tensile strength, 33% increase in hardness, 10% reduction in coefficient of friction, and 15% reduction in wear loss compared to the GDC counterpart.

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“…Aluminium alloys is widely applied in many industrial product, such as transportation, packaging, construction, or houseware product due to its excellent properties, such as light weight, high corrosion resistance, high castability, and good conductor [1]- [4]. Recently, secondary aluminium is widely used in transportation, building, and packaging industries.…”

Section: Introductionmentioning

confidence: 99%

Removal of Oxide Inclusions in Aluminium Scrap Casting Process with Sodium based Fluxes

et al. 2019

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The investigation of Oxide Inclusions removal in aluminium scrap casting process with sodium based fluxes has been carried out. The purpose of this research is to investigate the effect of Na2SO4 and NaCl based fluxes addition onto the fluidity and microstructure of aluminium product. The alloy which is used in this investigation is Al-Si which mixed with metal scrap using gravity casting method. The variation of melting temperature in this investigation are 700°C, 740°C, and 780°C. In this research, material characterization was determined using DSC, EDAX, XRD, and fluidity test. The results show that the number of oxide inclusions decrease as the addition of 0,2% wt. flux, and completly removed after the addition of 0,4% wt. flux. The highest fluidity and tensile strength was obtained after the addition of 0,4% wt. flux. at 740°C.

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Mechanical Characterization and Microstructure analysis of Al C355.0 by Sand Casting, Die Casting and Centrifugal Casting Techniques.

Cited by 14 publications

References 5 publications

The Effect of Vacuum on the Mechanical Properties of Die Cast Aluminum AlSi9Cu3(Fe) Alloy

The Effect of Vacuum on the Mechanical Properties of Die Cast Aluminum AlSi9Cu3(Fe) Alloy

Mechanical and Tribological Behavior of Gravity and Squeeze Cast Novel Al-Si Alloy

Removal of Oxide Inclusions in Aluminium Scrap Casting Process with Sodium based Fluxes

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