Effect of Tin on the Wear Properties of Spray Formed Al–17Si Alloy

Goudar, Dayanand M.; Srivastava, V. C.; Rudrakshi, G.B.; Raju, K.; Ojha, S. P.

doi:10.1007/s12666-015-0573-1

Cited by 15 publications

(4 citation statements)

References 11 publications

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“…The structure of Al-Sn alloys can also be refined by attrition of the powder mixture before its sintering [12,13]. In addition, other approaches can be used to prepare antifriction Al-Sn alloys with a high bearing capacity [14][15][16][17]. However, the processing methods employed in these cases are not very productive and require the use of complex and expensive equipment.…”

Section: Introductionmentioning

confidence: 99%

Effect of the Reinforcing Particle Introduction Method on the Tribomechanical Properties of Sintered Al-Sn-Fe Alloys

Rusin,

Skorentsev,

Dmitriev

2023

Metals

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The present paper reports the results of the comparative study of mechanical properties of sintered disperse-strengthened Al–40Sn alloy depending on the method of reinforcing particle introduction. The study is performed on two mixtures of aluminum and tin powders: one is admixed with 5.5–14.6 wt% of pure iron powder and the other contains the same amount of iron, but as a component of aluminide Al3Fe powders. The volume fraction of tin remains unchanged in all mixtures, being equal to 20%, and the concentration of hard particles increases due to a decrease in the volume fraction of the aluminum phase. Green compacts are sintered in the vacuum furnace at a temperature above the melting point of aluminum. The sintered material is a composite containing three phases: α-Al, β-Sn, and Al3Fe, in which the tin volume fraction is constant. Testing of the sintered composites for compression shows that the addition of finished Al3Fe particles has a more beneficial effect on their mechanical properties as compared to the addition of pure iron powders. In the latter case, aluminides are formed during sintering. The ultimate strength of composites reaches 180 MPa. Mechanisms of sintering of composites and the related structure and mechanical properties are discussed.

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Section: Introductionmentioning

confidence: 99%

Effect of the Reinforcing Particle Introduction Method on the Tribomechanical Properties of Sintered Al-Sn-Fe Alloys

Rusin,

Skorentsev,

Dmitriev

2023

Metals

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“…To decrease the intensity of adhesive wear of Al-based alloys, they are alloyed with soft metals (Sn or Pb), which do not dissolve in the aluminum matrix. Inclusions of these metals can serve as a solid lubricant for the friction surface [ 2 , 3 , 4 , 5 , 6 , 7 ]. With an increase in their content, the pressure of severe seizure of aluminum with steel increases, and the friction coefficient (µ) decreases to about 0.2 for the AO20-1 alloy [ 8 , 9 ].…”

Section: Introductionmentioning

confidence: 99%

Contribution of Tin to the Strain Hardening of Self-Lubricating Sintered Al-30Sn Alloy and Its Wear Resistance under Dry Friction

2023

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Aluminum alloys, which have been widely used in various manufacturing industries as an upper layer of bearing inserts, are alloyed with Sn to decrease the intensity of adhesive wear. A relationship between the mechanical properties, wear resistance, and structure of sintered Al-30Sn alloy containing a large amount of the soft phase was studied in this work. The above-mentioned characteristics were determined by testing the investigated material under compression and wear under dry friction in the pin-on-disk geometry at a sliding speed of 0.6 m/s and pressures of 1–5 MPa. The studied alloy was prepared by sintering of compacts consisting of a mixture of commercial powders in a vacuum furnace at a temperature of 600 °C for an hour. Then, the sintered Al-30Sn samples were subjected to processing by equal channel angular pressing (ECAP) with routes A and C. It has been established that the hardening value of the alloy subjected to ECAP virtually does not depend on the Sn content, but it depends on the number of passes and the processing route. The maximum increase in the strength of the alloy was found after the first and second passes. At the fixed Sn content, its effect on the wear resistance of the alloy does not depend on the strain hardening value of the aluminum matrix.

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“…Increasing the service life of friction units in machines and mechanisms is one of the most important problems of modern materials science and engineering [ 1 , 2 , 3 ]. Alloys of Al–Sn system, unlike other aluminum-based alloys, have a good resistance to seizure, especially at high content of the soft phase [ 2 , 3 , 4 , 5 , 6 , 7 , 8 , 9 ]. The hardness and bearing capacity of Al–Sn alloys are decreased with an increase in tin content because Sn has a low melting point and is not strengthened under deformation processing.…”

Section: Introductionmentioning

confidence: 99%

“…In order to increase the strength of aluminum alloys, they are often alloyed with silicon or hard ceramic particles [ 7 , 8 , 11 , 15 ]. However, their surface is poorly wetted by liquid tin, and weak interphase boundaries are formed in the alloys during the melt crystallization.…”

Section: Introductionmentioning

confidence: 99%

Tribotechnical Properties of Sintered Antifriction Aluminum-Based Composite under Dry Friction against Steel

et al. 2021

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The disadvantage of antifriction Al–Sn alloys with high tin content is their low bearing capacity. To improve this property, the aluminum matrix of the alloys was alloyed with zinc. The powder of Al–10Zn alloy was blended with the powder of pure tin in the proportion of 40/60 (wt.%). The resulting mixture of the powders was compacted in briquettes and sintered in a vacuum furnace. The sintered briquettes were subjected to subsequent pressing in the closed press mold at an elevated temperature. After this processing, the yield strength of the sintered (Al–10Zn)–40Sn composite was 1.6 times higher than that of the two-phase Al–40Sn one. The tribological tests of the composites were carried out according to the pin-on-disk scheme without lubrication at pressures of 1–5 MPa. It was established that the (Al–10Zn)–40Sn composite has higher wear resistance compared with the Al–40Sn one. However, this advantage becomes insignificant with an increase in the pressure. It was found that the main wear mechanism of the investigated composites under the dry friction process is a delamination of their highly deformed matrix grains.

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Effect of Tin on the Wear Properties of Spray Formed Al–17Si Alloy

Cited by 15 publications

References 11 publications

Effect of the Reinforcing Particle Introduction Method on the Tribomechanical Properties of Sintered Al-Sn-Fe Alloys

Effect of the Reinforcing Particle Introduction Method on the Tribomechanical Properties of Sintered Al-Sn-Fe Alloys

Contribution of Tin to the Strain Hardening of Self-Lubricating Sintered Al-30Sn Alloy and Its Wear Resistance under Dry Friction

Tribotechnical Properties of Sintered Antifriction Aluminum-Based Composite under Dry Friction against Steel

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