The effect of Sr on the microstructure and wear properties of AlSi5Cu1Mg alloy

Zhu, Jiqing; Luo, Zhongmin; Wu, Shuo; Yan, Hong

doi:10.1177/1687814018819536

Cited by 11 publications

(5 citation statements)

References 20 publications

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“…In regard to microstructures, alloy EN AC 45300 belongs to the hypoeutectic system Al-Si and is suitable for both mould and sand castings; its composition contains relatively high amounts of Cu and Mg, enabling the nucleation of intermetallic phases as θ-Al2Cu, Al2CuMg, β-Mg2Si, and Q-Al5Cu2Mg8Si6 [27]. Furthermore, Fe lead to the nucleation of intermetallics, such as α-Al8Fe2Si, β-Al5FeSi, π-Al8Mg3FeSi6, and Al9FeMg3Si5, while Mn allows the nucleation of Chinese-script-like α-Al15(Mn, Fe)3Si2 intermetallic [28].…”

Section: Methodsmentioning

confidence: 99%

Effects of Casting-Additives on the Microstructure Evolution of Hypoeutectic Aluminium-Silicon Alloys

Fracchia¹,

Gobber²,

Rosso

2020

Metals

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Since the industries are called to produce environmentally friendly products, the research is moving toward new improved materials. In this panorama, aluminium alloys find applications for a large range of products. In the automotive, as well as in the aerospace, sector, aluminium alloys are largely adopted, thanks to their high specific properties and their light weight. Moreover, common casting techniques permit us to realize complex high-quality components. These components may be realized by using casting techniques adopting casting-additives, such as modifiers or refiners. In this work, the effect of refining and modification was studied in terms of microstructural evolution of the intermetallic phases in two aluminium-silicon alloys (EN AC 45300 and EN AC 43500). Microstructures were analyzed through micro-hardness measures, and we found a reduction in the standard deviation of the hardness with the addition of additives. Furthermore, secondary dendrites arms spacings (SDAS) were measured, evidencing a decrease in SDAS by adding casting additives. A strong correlation was found between the adding of additives and the possibility of containing the size of the silicon and of all the intermetallic phases opening up to the possibility of tailoring the microstructures.

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Section: Methodsmentioning

confidence: 99%

Effects of Casting-Additives on the Microstructure Evolution of Hypoeutectic Aluminium-Silicon Alloys

Fracchia¹,

Gobber²,

Rosso

2020

Metals

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“…% of Sr effected improvement of wear resistance when compared to the cast parts without Sr modification. Though, too hard and brittleness can also led to deterioration of the wear resistance [41]. From Fig.…”

Section: Wear Behavior and Cofmentioning

confidence: 99%

Investigation on Microstructure, Hardness, Wear behavior and Fracture Surface Analysis of Strontium (Sr) and Calcium (Ca) Content A357 Modified Alloy by Statistical Technique

Ganesh

Reddy

Babu³

et al. 2023

Frattura Ed Integrità Strutturale

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The aluminum alloy are extensively used in several industrial applications. Stir casting is one of the most frequently accepted methods. In the present investigation, how the microstructure, mechanical and wear mechanics of A357 alloy were impacted by the presence of Sr/Ca was investigated. The outcomes revealed that addition of elements (Sr/Ca) enhance the microstructural features. Uniform dispersal of particulates (Sr/ Ca) in Al357 alloy and also the modified structure of silicon (Si) were observed. Hardness of modified alloy was evaluated by using hardness tester. A result reveals that hardness of modified alloy was improved by increasing in the Sr/Ca content. The wear rate of modified alloy was evaluated by using Pin and Disc wear test rig. Test trials were conducted according to Taguchi technique. L27 array was implemented for evaluation of data. The effect of varying parameters (factors) on wear loss and COF were analyzed using ANOVA (Analysis of Variance) method. ANOVA outcomes shown that, the Sr/Ca content has a better significant impact on wear behavior and COF of the modified alloy. A wear fractography result shows the internal fracture structure of a wornout surface which was studied by SEM analysis.

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“…When compared to the hardness of Al7075+Sr cast parts, the hardness of Al7075+Na cast parts is lower. Due of agglomeration effects, the hardness decreased at higher weight percent Sr and Na content [19]. Moreover, as the Sr and Na element content in the base material rises above 10%, the percentage porosity rises as well.…”

Section: Hardnessmentioning

confidence: 99%

Study on Strontium and Sodium Modification Elements on Microstructure, Mechanical, Wear and Fracture Behavior of Al7075 Alloy by Taguchi Technique

2024

jjmie

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Several industrial applications make substantial use of the aluminium alloy. The impact of Sr/Na on the microstructure, mechanical properties, and wear mechanics of Al7075 alloy was examined in the current experiment. The findings showed that the microstructure improved by the inclusion of elements (Sr/Na). Uniform dispersion of particles (Sr/Na) and changed structure of silicon (Si) in the Al7075 alloy were noted. Hardness of the developed alloys was checked with micro hardness tester and micrographs were taken using metallurgical microscope. Pin-and-Disc wear test equipment was used to measure the wear rate of the modified alloys. The wear test trials were carried out using the Taguchi technique in order to increase the accuracy of the results. The L27 array was used to evaluate the data. Applying ANOVA (Analysis of Variance) approach, the impact of changing parameters (factors) on wear loss and COF was examined. The obtained result indicates that, hardness and tensile strength increases by 37.78% and 14.57% respectively when compared to the base alloy. It is due to the increase of wt. % Sr modifier. The ANOVA analysis results indicate that, wt. % of Sr is most significant (69.70 %) parameter followed by Na (wt. %), Load (N) & Speed (rpm).The Sr/Na content has a more substantial impact on the wear behaviour and COF of the modified alloy, according to the results of the ANOVA. A worn-out surface's internal fracture structure can be seen in a wear fractography report after SEM analysis.

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The effect of Sr on the microstructure and wear properties of AlSi5Cu1Mg alloy

Cited by 11 publications

References 20 publications

Effects of Casting-Additives on the Microstructure Evolution of Hypoeutectic Aluminium-Silicon Alloys

Effects of Casting-Additives on the Microstructure Evolution of Hypoeutectic Aluminium-Silicon Alloys

Investigation on Microstructure, Hardness, Wear behavior and Fracture Surface Analysis of Strontium (Sr) and Calcium (Ca) Content A357 Modified Alloy by Statistical Technique

Study on Strontium and Sodium Modification Elements on Microstructure, Mechanical, Wear and Fracture Behavior of Al7075 Alloy by Taguchi Technique

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