The effect of heat-treatment on aluminum-based piston alloys

Zeren, Muzaffer

doi:10.1016/j.matdes.2006.09.010

Cited by 99 publications

(51 citation statements)

References 13 publications

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“…Addition of elements like Cu, Zn etc. is very important when considering heat treatment as the main reason behind improving hardness is through formation of intermetallic compounds [13][14] [15]. Solutionizing is usually carried out at 500-600 0 C for 8 hours and aging temperature between 130-180 0 C [16].…”

Section: Introductionmentioning

confidence: 99%

Study of Mechanical and Wear Properties of Stir-Cast Al-Si-Cu alloy

Namboodiri¹,

Ilangovan²

2018

IJET

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The present work deal with an investigation of the mechanical and wear properties of eutectic Al-12.8%Si-2.5%Cu under as cast and homogenized conditions. The alloy was melted in a ceramic crucible, stirred and gravity poured into a metal mold and was then cooled under atmosphere. The stirring parameters include a stirrer speed of 400rpm at a melt temperature of 750 0 C for about 10 minutes. The cast specimens were homogenized in a nitrogen atmosphere crucible at a temperature of 350 0 C for 8 hours and furnace cooled to room temperature. The microstructure of as cast and homogenized specimen were studied under SEM. The results of SEM study showed that the Si particles were more evenly dispersed around the -Al matrix after homogenization. This even dispersion of Si particles led to an increase in the hardness and ultimate tensile strength of the alloy. The dry sliding wear behavior was studied using a pin-on-disc machine. It is seen that the wear rate reduced with increase in sliding speed. The EDAX analysis of worn surface showed the phenomenon of lamination. It is concluded that the oxide layer formation was also a reason for increase in wear resistance of the material.

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Section: Introductionmentioning

confidence: 99%

Study of Mechanical and Wear Properties of Stir-Cast Al-Si-Cu alloy

Namboodiri¹,

Ilangovan²

2018

IJET

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“…The main strategy to improve the mechanical properties of Al-Si alloys is modification of the shape and size of Si phases together with refinement in the Al-matrix. Hence, to obtained modified and refined microstructure for the sake of better mechanical properties, numerous techniques, such as adding element Sc, Sr, Al and P to the melt, gas atomization, melt spinning, die forging, hot forging technology, has been presented in the literature [5][6]. However, improvement of strength generally leads to a decrease in ductility.…”

Section: Introductionmentioning

confidence: 99%

Improved Mechanical Properties of Al-Si Alloys by Adding an Extrusion Process to Conventional Processing Method

Han

Femi

Kilicaslan

et al. 2017

Archives of Metallurgy and Materials

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In this study, the mechanical properties of Al-Si alloys was improved by selecting higher Si content and avoiding distortion in Al-Si matrix by adding an extrusion process such that the fabrication processes casting and extrusion were in sequence. Cast billets were extruded at ratios 4:1 and 10:1 to obtained two extruded bars with different processing parameters. The as-extruded samples were characterized and investigated for microstructure and mechanical properties. Optical Microscope was used to examined phase morphologies and microstructures of the extruded Al-Si bars. Mechanical properties were conducted on each sample to study the effectiveness of the additional extrusion process in high Si content Al-Si alloys. The result shows that by increasing the extrusion ratio, the size of the primary Si particle reduces leading to a higher density, better tensile and yield strength compared to the cast billet.

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“…The production may select either the casting or forging routes while the materials of choice are typically eutectic Al-Si alloys. Eutectic alloys are preferred because they have excellent fluidity and feedability due to their near zero solidification range [2].…”

Section: Introductionmentioning

confidence: 99%