Effect of Strontium and Magnesium Additions on the Microstructure and Mechanical Properties of Al–12Si Alloys

Hekìmoğlu, Ali Paşa; Çalış, Merve; Ayata, Gizem

doi:10.1007/s12540-019-00429-6

Cited by 30 publications

(24 citation statements)

References 39 publications

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Section: Resultsmentioning

confidence: 99%

“…Hardness measurements were carried out with Brinell method on the basis of previous works. 4,9 The hardness of each alloy was determined by averaging at least ten measurements. Tensile tests were carried out by using a universal test machine at a deformation rate of 10 23 s 21 .…”

Section: Investigation Of Structural and Mechanical Propertiesmentioning

confidence: 99%

“…9,14,22,29,30 The addition of Mg to Al-9Si-0.1Sr alloy caused transformation of d phase to p phase (Figure 6). 9 It is known that intermetallic phases containing iron such as b, d, and p in Al-Si alloys are formed and differ depending on the ratio of impurity elements and cooling conditions. [31][32][33][34] The results of XRD studies made for determining the phases are given in Figure 7.…”

Section: Structural and Mechanical Properties Of The Alloysmentioning

confidence: 99%

“…The effect of Sr and Mg additions on the material properties of Al-Si alloys is explained and discussed in detail in the literature based on the increase in the volume ratio of the a phase in addition to the effect of grain refinement, solid solution, and dispersion hardening mechanisms. 9 Machining tests were repeated five times for each alloy. The arithmetic mean values for the F and Ra obtained as a result of these machining tests were The addition of Sr facilitates the plastic deformation of the Al-based soft phase (a phase) by increasing the elongation to fracture of the alloy.…”

Section: Structural and Mechanical Properties Of The Alloysmentioning

confidence: 99%

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Experimental research on machinability characteristics of Al-9Si alloy: Effect of Sr and Mg additives

Hekìmoğlu

Bayraktar

2022

Proceedings of the Institution of Mechanical Engineers, Part B:

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In this study, the effects of strontium (Sr) and magnesium (Mg) elements in certain rates added to Al-9Si alloy manufactured using permanent mold casting technique on the structural, mechanical, and machinability properties of these alloys were investigated. While microstructural images of the alloys were obtained with an optical microscope, hardness, tensile strength, and elongation to fracture were determined by conventional methods. The resultant cutting force ( F) and average surface roughness ( Ra) were measured as experimental outputs in the turning process. It was observed that Al-9Si alloy comprised of α-Al, eutectic Al-Si, β, and primary Si phases. The addition of Sr to the Al-9Si alloy led to the formation of the Al4Sr phase and the transformation of the β phase into the δ phase. The addition of Mg to Al-9Si-0.1Sr alloy caused the δ phase to transform into the π phase. The hardness of the tested alloy increased significantly with the Mg addition. The yield strength and tensile strength of them increased with both Sr and Mg additions. On the other hand, elongation to fracture value of the Al-9Si alloy increased with Sr addition while it decreased with the Mg addition. The F and Ra values obtained from the Al-9Si alloy increased with Sr addition in the turning process while decreased with Mg addition. The results obtained from turning tests were discussed based on the mechanical properties of alloys.

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Section: Resultsmentioning

confidence: 99%

Section: Investigation Of Structural and Mechanical Propertiesmentioning

confidence: 99%

Section: Structural and Mechanical Properties Of The Alloysmentioning

confidence: 99%

Section: Structural and Mechanical Properties Of The Alloysmentioning

confidence: 99%

See 2 more Smart Citations

Experimental research on machinability characteristics of Al-9Si alloy: Effect of Sr and Mg additives

Hekìmoğlu

Bayraktar

2022

Proceedings of the Institution of Mechanical Engineers, Part B:

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“…Strontium nanoparticles (Sr-NPs) are spherical or flake metal particles with a specific surface area of 30-60 m 2 /g in a size range of 10-200 nm. Sr-NPs are used either in bone regeneration to improve the mechanical and biological properties of diverse polymers and metal alloys [171,172] or encapsulated as inorganic nanocarriers in drug delivery and biomedical imaging [173,174].…”

Section: Strontium Nanoparticlesmentioning

confidence: 99%

Nanomaterials in Bone Regeneration

et al. 2022

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Nanomaterials are promising in the development of innovative therapeutic options that include tissue and organ replacement, as well as bone repair and regeneration. The expansion of new nanoscaled biomaterials is based on progress in the field of nanotechnologies, material sciences, and biomedicine. In recent decades, nanomaterial systems have bridged the line between the synthetic and natural worlds, leading to the emergence of a new science called nanomaterial design for biological applications. Nanomaterials replicating bone properties and providing unique functions help in bone tissue engineering. This review article is focused on nanomaterials utilized in or being explored for the purpose of bone repair and regeneration. After a brief overview of bone biology, including a description of bone cells, matrix, and development, nanostructured materials and different types of nanoparticles are discussed in detail.

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Performance evaluation of different carbide inserts in turning of newly developed Al‐12Si‐0.1Sr alloy

Bayraktar

Hekìmoğlu

2023

Materialwissenschaft Werkst

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An Al-12Si-0.1Sr alloy ingot was manufactured using a permanent mold casting technique. The microstructure and mechanical properties of this alloy were researched. Effects of different cutting conditions (cutting speed-V: 200 m/min, 300 m/min, and 400 m/min and feed rate-f: 0.05 mm/rev, 0.1 mm/rev, and 0.15 mm/rev) on the cutting force (F) and surface roughness (R a ) during machining using uncoated and physical vapor deposition-titanium aluminum nitride coated carbide inserts were also revealed. Microstructure of the alloys consists of α phase, intermetallic δ and Al 4 Sr phases, thin spherical eutectic, and irregular coarse-shaped primary silicon particles. Cutting force and surface roughness decreased with the increased cutting speed during turning with uncoated, and titanium aluminum nitride coated inserts while they increased feed rate. A built-up edge and built-up layer were formed in both cutting inserts. The built-up edge and built-up layer decreased with increasing cutting speed and increased feed rate. The cutting force, surface roughness, built-up edge, and built-up layer were lower in uncoated inserts compared to the titanium aluminum nitride coated inserts.

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Effect of Strontium and Magnesium Additions on the Microstructure and Mechanical Properties of Al–12Si Alloys

Cited by 30 publications

References 39 publications

Experimental research on machinability characteristics of Al-9Si alloy: Effect of Sr and Mg additives

Experimental research on machinability characteristics of Al-9Si alloy: Effect of Sr and Mg additives

Nanomaterials in Bone Regeneration

Performance evaluation of different carbide inserts in turning of newly developed Al‐12Si‐0.1Sr alloy

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