Studies on the microstructure and mechanical properties of A356 alloy with minor additions of copper and magnesium

Kori, S.A.; Prabhudev, M. S.; Chandrashekharaiah, T.M.

doi:10.1007/s12666-009-0052-7

Cited by 25 publications

(14 citation statements)

References 10 publications

(18 reference statements)

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“…In another work it was reported that 1.5% Cu addition to Al-Si alloy resulted in refinement of dendrites and mechanical behaviour of Al-Si alloys was improved [12]. In one of our recent work [28], it was observed that addition of Cu in amounts of 0.1-0.5% to A356 alloy has led to improved mechanical performance through refinement of -Al. Maximum Mechancial Performance was achieved when the amount of Cu added is 0.5%.…”

Section: Introductionmentioning

confidence: 90%

Influence of Cu Addition on Dry Sliding Wear Behaviour of A356 Alloy

Prabhudev¹,

Auradi²,

Venkateswarlu

et al. 2014

Procedia Engineering

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Influence of addition of copper (Cu) on the dry sliding wear behavior of A356 alloy has been reported in the paper. Effect of load, composition and sliding distances on A356 alloy before and after addition of Cu has been studied. Wear test surfaces were examined by SEM/EDX. It was found that wear resistance of A356 alloy decreases with increase in applied normal pressures and sliding distances. However, wear resistance of A356 alloy increased with Cu addition. Increase in wear resistance is mainly because of increase in strength/hardness of the alloy after Cu addition. SEM studies have shown that the layer of oxide material links both the surfaces there by improves sliding wear performance.

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Section: Introductionmentioning

confidence: 90%

Influence of Cu Addition on Dry Sliding Wear Behaviour of A356 Alloy

Prabhudev¹,

Auradi²,

Venkateswarlu

et al. 2014

Procedia Engineering

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“…Comparing curves b, d, and f in Figure 2, the elongation (A%) decreases with increasing Cu content. Although it is not straight forward to compare elongations to di erent studies having di erent casting conditions, the Cu0.5 and Cu1 alloys show ductility values ranging between 6% and 9%, well above the average value found in the literature [28]. e two phenomena might be related to the solidi cation mechanism and/or microstructural features.…”

Section: 1mentioning

confidence: 86%

How Slight Solidification Rate Variations within Cast Plate Affect Mechanical Response: A Study on As‐Cast A356 Alloy with Cu Additions

Giovanni

Cerri

Saito

et al. 2018

Advances in Materials Science and Engineering

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e present work investigates a narrow range of secondary dendrite arm spacing (SDAS), in an as-cast A356 alloy with and without copper (Cu) additions. Cu was added to the base A356 alloy melt to reach the target concentration of 0.5 and 1 wt.%. Samples were selected from 3 different positions within the cast plate, offering 30, 35, and 40 μm SDAS variants. Tensile curves revealed a strong influence between the specimen cutting position and strength, with a pronounced effect in the Cu-containing alloys. Hardness measurements did not confirm the tensile response; hence, to understand the phenomenon, microstructural features have been investigated in detail. Eutectic silicon (Si) particle equivalent diameter (ED) size decreased from the top (T) to the bottom (B) position of the cast. Eutectic Si particle surface area (A%) was found to be denser at the B as compared to the T and simultaneously in the Cu-containing alloy as compared to the Cu-free reference alloy. Backscattered electron (BSE) images were employed to investigate the nature of the Cu-rich intermetallic phases. In conclusion, electrical conductivity measurements were performed to confirm the trends observed.

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“…Once the initial modification is made, there is a good retention of mechanical properties. 31 The work of Li et al 32 showed that the addition of both Mg and Sr can lead to severe segregation of the Al 2 Cu phase in 319.2 alloys, resulting in the production of large amounts of the coarse block-like phase, compared to the finer eutectic-like form. These segregated block-like Cu-rich phase particles decrease the impact strength of the Al-SiCu-Mg alloys.…”

Section: Hardness and Impact Propertiesmentioning

confidence: 99%

On the Microstructure, Hardness and Impact Toughness of 356 and 413 Alloys

et al. 2016

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The present study was performed on 356 and 413 alloys containing various amounts of hydrogen (H 2 ), titanium diboride (TiB 2 ) and strontium (Sr). The results show that the eutectic silicon particles in non-modified alloys undergo coarsening during the solutionizing treatment. A new mechanism, based on the Ostwald theory, has been proposed to explain the observed phenomenon. Although the variation in melt treatment parameters has no significant influence on the alloy hardness, it does have a great effect on the alloy impact toughness. Best results are obtained when the alloy is degassed, Sr-modified and grain refined. Also, Sr-modified, degassed 413 alloys have been found to possess good impact toughness. Precipitation of Mg 2 Si phase particles in 356 alloy is more effective as a hardening agent than the Al 2 Cu phase precipitated in the 413 alloy. The increased Si content in non-modified 413 alloys accelerates crack initiation and propagation, leading to low toughness values. Modifying the 413 alloys with 200 ppm Sr results in a more even distribution of the spheroidized eutectic Si particles and hence improves the alloy toughness.

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Studies on the microstructure and mechanical properties of A356 alloy with minor additions of copper and magnesium

Cited by 25 publications

References 10 publications

Influence of Cu Addition on Dry Sliding Wear Behaviour of A356 Alloy

Influence of Cu Addition on Dry Sliding Wear Behaviour of A356 Alloy

How Slight Solidification Rate Variations within Cast Plate Affect Mechanical Response: A Study on As‐Cast A356 Alloy with Cu Additions

On the Microstructure, Hardness and Impact Toughness of 356 and 413 Alloys

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