Wear in Zn-Al-Si alloys

Li, Jian; Laufer, E. E.; Masounave, Jacques

doi:10.1016/0043-1648(93)90371-r

Cited by 32 publications

(17 citation statements)

References 8 publications

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Section: Introductionmentioning

confidence: 96%

“…It is also known that the mechanical and tribological properties of zinc-aluminium alloys can be greatly improved by additions of copper and/or silicon [2,[5][6][7][8][9][10][11][12][13][14]. Copper was found to be a more effective alloying addition in increasing the strength of the alloys, while silicon showed a more powerful effect on their wear resistance [2,[5][6][7][8]. Extensive research on the alloys containing both copper and silicon resulted in the development of zincbased quaternary monotectoid alloys which exhibited higher tensile strength and wear resistance than either eutectic or eutectoid alloys [9][10][11][13][14][15][16][17].…”

Section: Introductionmentioning

confidence: 99%

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Effects of Silicon Content on the Mechanical Properties and Lubricated Wear Behaviour of Al–40Zn–3Cu–(0–5)Si Alloys

Alemdağ

Savaşkan

2008

Tribol Lett

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In this work, one ternary Al-40Zn-3Cu and seven quaternary Al-40Zn-3Cu-(0.25-5)Si alloys were synthesized by permanent mould casting. Their microstructure, mechanical and lubricated wear properties were investigated using appropriate test apparatus and techniques. As the silicon content increased the hardness of the alloys increased, but their elongation to fracture decreased. Tensile strength of the alloys decreased with increasing silicon content following a sharp decrease and a slight increase. Among the silicon-containing quaternary alloys the highest and the lowest tensile strength values (348 and 305 MPa) were obtained with the Al-40Zn-3Cu-2Si and Al-40Zn-3Cu-5Si alloys, respectively, while the base alloy (Al-40Zn-3Cu) exhibited a tensile strength of 390 MPa. However, the volume loss due to wear of the alloys increased with increasing silicon content after showing an initial increase and a sharp decrease. The lowest wear loss was obtained with the alloy containing approximately 2% Si which has the highest tensile strength among the quaternary alloys containing more than 0.25% Si. Wear surfaces of the alloys were characterized mainly by smearing indicating that adhesion is the dominant wear mechanism for the experimental alloys.

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Section: Introductionmentioning

confidence: 96%

Section: Introductionmentioning

confidence: 99%

Effects of Silicon Content on the Mechanical Properties and Lubricated Wear Behaviour of Al–40Zn–3Cu–(0–5)Si Alloys

Alemdağ

Savaşkan

2008

Tribol Lett

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“…The solubility of silicon in the zinc-aluminum matrix is nearly zero (Ref 20). Therefore, silicon solidifies into the primary and eutectic silicon particles in the microstructure of the Zn-Al-Si alloys (Ref [6][7][8][9]. The distribution of Si particles is non-uniform in the alloys.…”

Section: Characteristics Of Cast Alloysmentioning

confidence: 99%

Thermal and Microstructure Characterization of Zn-Al-Si Alloys and Chemical Reaction with Cu Substrate During Spreading

Berent

Pstruś

Gancarz

2016

J. of Materi Eng and Perform

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The problems associated with the corrosion of aluminum connections, the low mechanical properties of Al/ Cu connections, and the introduction of EU directives have forced the potential of new materials to be investigated. Alloys based on eutectic Zn-Al are proposed, because they have a higher melting temperature (381°C), good corrosion resistance, and high mechanical strength. The Zn-Al-Si cast alloys were characterized using differential scanning calorimetry (DSC) measurements, which were performed to determine the melting temperatures of the alloys. Thermal linear expansion and electrical resistivity measurements were performed at temperature ranges of 250 to 250°C and 25 to 300°C, respectively. The addition of Si to eutectic Zn-Al alloys not only limits the growth of phases at the interface of liquid solder and Cu substrate but also raises the mechanical properties of the solder. Spreading test on Cu substrate using eutectic Zn-Al alloys with 0.5, 1.0, 3.0, and 5.0 wt.% of Si was studied using the sessile drop method in the presence of QJ201 flux. Spreading tests were performed with contact times of 1, 8, 15, 30, and 60 min, and at temperatures of 475, 500, 525, and 550°C. After cleaning the flux residue from solidified samples, the spreadability of Zn-Al-Si on Cu was determined. Selected, solidified solder/substrate couples were crosssectioned, and the interfacial microstructures were studied using scanning electron microscopy and energy dispersive x-ray spectroscopy. The growth of the intermetallic phase layer was studied at the solder/substrate interface, and the activation energy of growth of Cu 5 Zn 8 , CuZn 4 , and CuZn phases were determined.

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“…One of the ways to modify the alloy system is through compositional alterations involving the addition of high melting elements such as silicon. The developed alloys have been characterized for their microstructural features and mechanical and sliding wear properties [5][6][7][8][9][10][11][12][13][14][15][16][17]. The modified alloys have been observed to possess improved performance over the conventional ones in the (zincbased) alloy system.…”

Section: Introductionmentioning

confidence: 99%

Slurry wear behavior of zinc-based alloys: influence of some material and test parameters

Prasad

2006

Tribol Lett

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This investigation pertains to the analysis of slurry wear behavior of a zinc-based alloy. The effects of material composition/ microstructure, slurry composition and traversal distance and speed on the response of the alloy system have been studied. Sample rotation method was adopted for testing the samples. In some cases, unexpected wear response (from conventional understanding) was observed. For example, presence of a less corroding phase like Si particles in the alloy system caused inferior wear response while increasing traversal speed led to improved wear behavior (in the liquid-only medium). Further, hard sand particles suspended in the test environment offered superior wear characteristics despite their additional erosive and abrasive damage to the samples. In the tested range (20-60 wt%) of sand concentrations in the slurry medium, the wear rate increased initially with increasing sand concentration, attained the maximum (although less than the liquid-only medium) at 40% sand and then finally followed a reversal in the trend at a still higher sand concentration of 60%. Increasing traversal speed from 4.71 to 7.02 m/s led to inferior response while the silicon containing alloy performed better than the one without the element in general in liquid plus sand slurries. The wear rate increased with traversal distance initially, attained the maximum and then decreased once again at still larger distances. The sensitivity of the rate of increase/decrease in wear rate with distance became less in the presence of suspended sand particles in the medium (electrolyte). The observed wear response of the samples has been substantiated through specific characteristics of affected surfaces. The latter also helped to understand the operating material removal mechanisms.

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Wear in Zn-Al-Si alloys

Cited by 32 publications

References 8 publications

Effects of Silicon Content on the Mechanical Properties and Lubricated Wear Behaviour of Al–40Zn–3Cu–(0–5)Si Alloys

Effects of Silicon Content on the Mechanical Properties and Lubricated Wear Behaviour of Al–40Zn–3Cu–(0–5)Si Alloys

Thermal and Microstructure Characterization of Zn-Al-Si Alloys and Chemical Reaction with Cu Substrate During Spreading

Slurry wear behavior of zinc-based alloys: influence of some material and test parameters

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