Effect of Strontium Addition on Microstructure and Mechanical Properties of AlSi7Mg0.3 Alloy

Derin, Sıla; Aybarç, Uğur; Birol, Yücel

doi:10.1007/s40962-016-0117-4

Cited by 15 publications

(7 citation statements)

References 23 publications

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“…Based on previous research, adding Sr as grain refinement will enhance alloys' tensile strength and microstructure stability. Sr would also make the porosity of the grain structure decrease [13]. The difference in porosity characteristics thus depends on the amount of Sr oxides present in the solidified structure [14].…”

Section: Microstructure Of Al-mg-sr Composite Alloymentioning

confidence: 99%

Characterization of Aluminium-Magnesium (Al-Mg) Alloy Reinforced with Strontium (Sr) by Casting Technique

Ramli

Basir

Ramlan

et al. 2023

ARAM

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Aluminium-metal matrix composites (Al-MMCs) are quite attractive due to their low density, ability to be reinforced by precipitation, good corrosion resistance, high thermal and electrical conductivity, and high damping capacity. In this study, the aluminium-magnesium (Al-Mg) master alloy was reinforced with 0.5 to 1.0 wt% strontium (Sr) by casting technique. Then, the Al-Mg-Sr composite alloy was characterised by its mechanical properties and microstructure characterization. An Instron tensile machine and a Vickers hardness tester were used to determine the tensile strength and hardness of the Al-Mg-Sr composite alloy. The Gamry potentiometer electrode was used to determine the corrosion rate of this composite alloy. From the results, increased Sr content increases the tensile strength and hardness of the Al-Mg alloy. Field emission scanning electron microscope (FESEM) results show that the synthesised composite alloys have a uniform distribution of reinforcement, which tends to be fine and associated with a clean interface with the metal matrix. X-ray diffraction (XRD) analysis confirms that only the elements Al, Mg, and Sr were detected during characterization. The morphology shows that the particles of the Sr phase have a dendritic structure. In the corrosion test with the Gamry potentiometer electrode, Al-Mg with a composition of 1.0 wt% Sr showed the best results in terms of corrosion rate compared to cast Al-Mg with 0.5 wt% and the Al-Mg alloy itself. All the summarised results show that Al-Mg alloy composites containing different weights of Sr phase were successfully fabricated and the particles were uniformly distributed in the matrix of the composites.

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Section: Microstructure Of Al-mg-sr Composite Alloymentioning

confidence: 99%

Characterization of Aluminium-Magnesium (Al-Mg) Alloy Reinforced with Strontium (Sr) by Casting Technique

Ramli

Basir

Ramlan

et al. 2023

ARAM

View full text Add to dashboard Cite

show abstract

“…Quality Index (QI) values of the samples are calculated using the Equation 1 by the help of the tensile test results [24][25][26]. (1) In this equation QI ; quality index(MPa) UTS ; ultimate tensile strength (MPa) K ; constant (for A356 alloy is equivalent to 150 MPa) Elongation ; (%) Brinell hardness tests and Charpy Impact tests were applied to the samples using Innovates Nemesis 9000 and Instron Ceast 9050 model machines, respectively. For metallographic study, samples were firstly grinded, and polished with diamond solution, then etched by 3% HF solution for macro and by FeCl3 solution for microstructure examinations, respectively.…”

Section: Mechanical and Metallographic Analysismentioning

confidence: 99%

“…Aluminum alloys are one of the most important material group used in the automotive industry due to their lightness, high corrosion resistance, easy formability, recyclability and high specific strength [1][2][3]. Particularly, in recent years, work has begun on decreasing vehicle weights, especially due to new regulations aimed at reducing environmental pollution, and studies on products such as aluminum have gained momentum.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Effects of Stirring Duration and Casting Temperature in Ultrasonic Assisted Stir Casting of Al A356 Matrix Composites

Yüksel¹,

Aybarç²,

Ertuğrul

2020

Politeknik Dergisi

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“…However, the Sr that was bound during this reaction might have separated at the top of the molten metal or oxidized to SrO and disappeared naturally. The alloy structure might therefore have changed to a needle-like structure again or growing [26]. Therefore, changes in the structure owing to the duration of the casting time were observed and used to determine the optimal casting time after addition of Sr.…”

Section: Refinement Of the Si Structure In The Ac4ch Alloymentioning

confidence: 99%

Optimization Studies of AC4CH Material in the Cylinder Block of a Diesel Engine Application

2020

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The reduction of the weight of the engine of a vessel or an automobile can result in improved engine efficiency and lower CO2 emissions. Therefore, this study was conducted to improve the mechanical properties of the AC4CH alloy, an alternative to cast iron for engine fabrication, through the addition of Si and Mg to aluminum. The mechanical properties of the alloy were improved through refinement of the Si structure, grain refinement, and heat treatment. In addition, the applicability of a cylinder block fabricated with the modified AC4CH alloy to a diesel engine was validated through a 300 h durability test.

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Effect of Strontium Addition on Microstructure and Mechanical Properties of AlSi7Mg0.3 Alloy

Cited by 15 publications

References 23 publications

Characterization of Aluminium-Magnesium (Al-Mg) Alloy Reinforced with Strontium (Sr) by Casting Technique

Characterization of Aluminium-Magnesium (Al-Mg) Alloy Reinforced with Strontium (Sr) by Casting Technique

Effects of Stirring Duration and Casting Temperature in Ultrasonic Assisted Stir Casting of Al A356 Matrix Composites

Optimization Studies of AC4CH Material in the Cylinder Block of a Diesel Engine Application

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