Dry wear behavior of cooling-slope-cast hypoeutectic aluminum alloy

Thường, Nguyễn Văn; Hussain, Zuhailawati; Anasyida, Abu Seman; Huy, Tran Duc; Dhindaw, B. K.

doi:10.3139/146.111371

Cited by 4 publications

(4 citation statements)

References 34 publications

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“…As can be seen, the loss of volume rises with sliding distance for both alloys. This is in agreement with [19] who found further that during his study about the effect of Cu addition on dry sliding wear behaviour of A356 alloy, because of increase in strength/hardness of the alloy after Cu addition and caused improve the wear resistance. On the other hand, the reduction in wear resistance as sliding continues can be attributed to long time of contact between the two pin sample and disc.…”

Section: Methodssupporting

confidence: 92%

Dry Sliding Wear Behaviour of Rheocat Al-5.7si-2cu-0.3mg Alloy

Abdelgnei

Omar²,

Ghazali³

et al. 2018

IJET

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In this study, the effect of improved microstructure of Al-5.7Si-2Cu-0.3Mg alloys by using semisolid process on hardness and dry sliding wear behaviour were investigated. The microstructures of conventional cast alloy were totally dendritic, while in rheocasting the dendritic transfer to fine globular microstructures after using cooling slope casting. Tribological tests were carried out by using a pin-on-disc apparatus in dry sliding conditions. Wear tests were at low sliding speed 1ms-1 ,applied load at 50N and three different sliding distance (i.e., 1.8Km, 5.4Km and 9Km) respectively. An optical microscope and a scanning electron microscope were used to examine the microstructure and to understand the wear mechanism on the worn surface of both samples. The results showed that, the wear resistance of rheocast alloy was improved and higher than that those produce by conventional casting. The volume loss of rheocast alloy show reduction more than 18% at 1.8Km and 10% at 9Km compared to as-cast alloy. Moderate wear regimes were appeared in both alloys, according to the range of wear rate. The friction coefficient had increased due to increase in the contact point between pin and disc materials. The dominant wear mechanism for conventional and rheocasting alloys was adhesion wear and abrasive wear respectively.

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Section: Methodssupporting

confidence: 92%

Dry Sliding Wear Behaviour of Rheocat Al-5.7si-2cu-0.3mg Alloy

Abdelgnei

Omar²,

Ghazali³

et al. 2018

IJET

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“…Archard’s law suggests that the wear rate is frequently regarded to be inversely proportionate to the hardness of the composite. 26 The microhardness values of A359-SiCp/Fe composites enhanced by iron foam are significantly higher than those of SiCp/A359 composites. The microhardness of the A359 matrix and the SiC particle aggregation area rose by 11.5% and 6.1%, respectively.…”

Section: Resultsmentioning

confidence: 93%

Wear behavior and wear mechanism of iron foam reinforced SiCp/A359 interpenetrating phases composites at high temperature

Liu

et al. 2022

Journal of Composite Materials

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The A359-SiCp/Fe interpenetrating phase composites reinforced with three-dimensional network structure iron foam and 20 wt. % SiC particles were fabricated after the infiltration technique by using the newly developed vacuum assisted infiltration procedures. The dry-sliding tribological behavior of A359-SiCp/Fe composites was investigated using the HT-1000 ball-on-disc type high temperature tribometer. The samples were subjected to a variety of temperatures and applied loads to investigate the influence on the wear rate and friction coefficient. In this study, SEM was used to analyses the wear microscopic morphology of A359-SiCp/Fe composites reinforced by iron foam. The wear longitudinal section and the morphology of the wear debris were analyzed by EDS and determined to explore the high-temperature wear mechanism under different temperatures and loads. Hardness analysis from the outer periphery to the core revealed an improvement in hardness. The hardness distribution of the wear longitudinal section is different at different temperatures. The formation of a high-hardness mechanical mixed layer with a different thickness on the wear surface can effectively reduce the wear rate. Microstructural investigations demonstrated that the change in wear debris shape with increasing temperature is mostly related to the change in wear mechanism. Abrasive wear and oxidation wear are the main wear mechanisms. With an increase in temperature and plastic deformation, delamination and adhesion are the predominant wear mechanisms, accompanied by the additional oxidative wear.

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“…So, the values of loads and rotational speed have been selected from the previous research on the studied composite material. 26,27 The variable parameters of the fabrication process, as well as the wear tests, are summarized in Table 3. For each of the compression test, relative density, and wear test, three samples were tested to obtain reliable results and their average was reported.…”

Section: Wrmentioning

confidence: 99%

Wear behavior of high volume Al₂O₃-reinforced Al7075 matrix composites fabricated by semi-solid powder processing

Aghajani

Pouyafar

Meshkabadi

2022

Proceedings of the Institution of Mechanical Engineers, Part E:

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The aim of the present study is to fabricate high volume Al2O3-reinforced Al7075 matrix composite by semi-solid powder processing method as an effective method to achieve the desired wear properties. The alloy powder (20 µm) was mixed with Al2O3 (120 µm) for 10 min and 5 h by planetary ball mill to overcome the powders agglomeration. The wear behavior of the composites was studied using the pin-on-disk tribometer. The effects of milling time, compact pressure, and reinforcement content were investigated to enhance the wear resistance. The results of the tribotests indicated that composites with coarser reinforcing particles (lower milling time) have good wear resistance. The role of compaction pressure in highly loaded composites is remarkable. The maximum wear resistance was observed for the 50% Al2O3 composite. The wear resistance increased as the reinforcement volume increased before reaching a critical value. Abrasive wear is the predominant mechanism in the wear of reinforced composites containing less than the load limit. However, adhesive and laminating wear are the controlling mechanisms at overloads. The results indicate valuable information in the development of aluminum-based composites.

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Dry wear behavior of cooling-slope-cast hypoeutectic aluminum alloy

Cited by 4 publications

References 34 publications

Dry Sliding Wear Behaviour of Rheocat Al-5.7si-2cu-0.3mg Alloy

Dry Sliding Wear Behaviour of Rheocat Al-5.7si-2cu-0.3mg Alloy

Wear behavior and wear mechanism of iron foam reinforced SiCp/A359 interpenetrating phases composites at high temperature

Wear behavior of high volume Al₂O₃-reinforced Al7075 matrix composites fabricated by semi-solid powder processing

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Dry wear behavior of cooling-slope-cast hypoeutectic aluminum alloy

Cited by 4 publications

References 34 publications

Dry Sliding Wear Behaviour of Rheocat Al-5.7si-2cu-0.3mg Alloy

Dry Sliding Wear Behaviour of Rheocat Al-5.7si-2cu-0.3mg Alloy

Wear behavior and wear mechanism of iron foam reinforced SiCp/A359 interpenetrating phases composites at high temperature

Wear behavior of high volume Al2O3-reinforced Al7075 matrix composites fabricated by semi-solid powder processing

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Wear behavior of high volume Al₂O₃-reinforced Al7075 matrix composites fabricated by semi-solid powder processing