Combustion Engine Cylinder Liners Made of Al-Si Alloys

Orłowicz, A. W.; Tupaj, M.; Mróz, M.; Trytek, A.

doi:10.1515/afe-2015-0041

Cited by 15 publications

(8 citation statements)

References 6 publications

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“…Al-Si alloys have wide application in the manufacturing of various machinery parts and components, due to their prominent properties, such as high specific strength, low thermal expansion, good castability, low costs, etc. [1,2]. Recently, some Al-Si alloys with near-eutectic compositions, e.g., AlSi10Mg and AlSi12, were considered as prospective materials in the additive manufacturing of aluminum alloy products [3].…”

Section: Introductionmentioning

confidence: 99%

Tuning the Surface Characteristic of Al-Si Alloys and Its Impacts on the Formation of Micro Arc Oxidation Layers

et al. 2021

Coatings

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Aluminum Silicon (Al-Si) alloys are the most important among cast alloys and have widespread application. The β-Si phase is detrimental to the growth of micro arc oxidation (MAO) layers on Al-Si alloys. In this paper, the β-Si in the skin layer of different Al-Si alloys was removed by an acid etching pretreatment. Then, the impacts of different etching condition on their MAO process were investigated. Results show that, as etching time was prolonged, the Si content on the surface of Al-12 Si was decreased greatly (less than 0.5 wt.%), and the average size of pores left on the sample surface was increased gradually. This then led to the occurrence of some bigger and more drastic discharge sparks at the earlier oxidation stage. The corresponding layers had a higher ratio of Al2O3 and better corrosion resistance after 30 min of oxidation. Moreover, a 60 s etching pretreatment benefitted and boosted the growth rate and energy efficiency of layers on the Al-9 Si, Al-12 Si and Al-15 Si alloys. Such pretreatment was believed to be applicable to restrain the negative effects of Si on the MAO of different Al-Si alloys.

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Section: Introductionmentioning

confidence: 99%

Tuning the Surface Characteristic of Al-Si Alloys and Its Impacts on the Formation of Micro Arc Oxidation Layers

et al. 2021

Coatings

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“…In practice, aluminum piston suppliers use a wide range of optimized alloy compositions that are generally based on silumins (such as Al-7% Si hypoeutectic, Al-12% Si eutectic, and hypereutectic alloys with 18 and 24% Si) [ 14 , 15 , 16 , 17 ]. Particle-reinforced aluminum matrix composites (PAIMCs), mainly those with silicon carbide (SiCp), are very promising and may provide an alternative to the currently used un-reinforced Al–Si alloys [ 18 , 19 , 20 , 21 , 22 ].…”

Section: Introductionmentioning

confidence: 99%

Assessment of the Tribological Properties of Aluminum Matrix Composites Intended for Cooperation with Piston Rings in Combustion Engines

et al. 2022

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Tribological interactions between the piston groove and ring in combustion engines have a significant influence on mechanical friction losses. Based on the analysis of the distribution of forces acting on the piston, the conditions for the friction tests were selected. The research was carried out on composites reinforced with silicon carbide (SiCp), glassy carbon (GCp), and a hybrid mixture of particles (SiCp + GCp). Tribological tests were carried out under extremely unfavorable dry sliding conditions using a pin-on-block tester. The friction of coefficient and wear values of the matrix alloy, composites, and iron were compared. Profilometry was used to perform quantitative and qualitative analyses of the wear tracks formed on the tested surfaces. The effect of the presence of reinforcing particles on the geometry of working surfaces was also evaluated. The obtained results show that AlSi12CuNiMg/SiCp and AlSi12CuNiMg/SiCp + GCp composites provided satisfactory effects towards stabilizing the friction coefficient and reducing the wear of tested tribological couples. This may provide a new solution dedicated to an important system, which is the piston groove/piston ring in diesel engines.

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“…It leads to a situation where the manufacturers of pistons consider all structural and operational factors more rigorously, which translates into a careful selection of materials and development of precise manufacturing technologies [5]. One should remember that selection of the materials for pistons of internal combustion engines constitutes a compromise between the structural requirements, technical properties of the individual materials, and technological possibilities for the manufacturing while maintaining a proper economical level [6][7][8][9]. In contemporary engines, pistons made of AlSi casting alloys are used most frequently.…”

Section: Introductionmentioning

confidence: 99%

Selected Tribological Properties of A390.0 Alloy

Wieszała

Piątkowski

2017

Archives of Foundry Engineering

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Emergence of new designs for internal combustion engines resulted in a necessity to search for new materials which will rise to excessive technological requirements under operating conditions of modern internal combustion engines of up to 150 kW. Focusing only on material properties, theoretically existing alloys should meet presents requirements. More importantly, existing materials are well fitted to the entire crank-piston system. Thus, there is a need for a more thorough examination of these materials. The paper presents studies on determination of coefficient of friction µ and wear for the A390.0 alloy modified with AlTi5B master alloy combined with EN GJL-350 cast iron. The characteristics of a T-11 tribological tester (pin on disc) used for the tests, as well as the methodology of the tribological tests, were described. Also, the analysis of the surface distribution of elements for the pin and the disc was presented. The studies were realized in order to find whether the analyzed alloy meets the excessive requirements for the materials intended for pistons of modern internal combustion engines. The results show that the A390.0 alloy can only be applied to a load of 1.4 MPa. Above this value was observed destructive wear, which results in the inability to use it in modern internal combustion engines.

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Combustion Engine Cylinder Liners Made of Al-Si Alloys

Abstract: The paper deals with problems related to application of aluminum-silicon alloys for combustion engine cylinder liners.

Cited by 15 publications

References 6 publications

Tuning the Surface Characteristic of Al-Si Alloys and Its Impacts on the Formation of Micro Arc Oxidation Layers

Tuning the Surface Characteristic of Al-Si Alloys and Its Impacts on the Formation of Micro Arc Oxidation Layers

Assessment of the Tribological Properties of Aluminum Matrix Composites Intended for Cooperation with Piston Rings in Combustion Engines

Selected Tribological Properties of A390.0 Alloy

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