Correlation between the characteristics of the mechanically mixed layer and wear behaviour of aluminium, Al-7075 alloy and Al-MMCs

Venkataraman, B.; Sundararajan, G.

doi:10.1016/s0043-1648(00)00463-4

Cited by 332 publications

(141 citation statements)

References 15 publications

Supporting

Mentioning

125

Contrasting

Unclassified

Order By: Relevance

“…However, many recent reports show that the MML layer forms on the worn surface of aluminum alloys and the composites. 17,21,22,27,28) In the present work, MML can be always observed for the monolithic al-I and regime II, respectively, reported by Alpas and Zhang. 12) However, the dominant wear mechanism appears somewhat different in different regions of the mild wear.…”

Section: Wear Regimesupporting

confidence: 74%

Dry Sliding Wear Behavior of A2218/Al<SUB>3</SUB>Fe Composites Fabricated by Plasma Synthesis Method

et al. 2002

View full text Add to dashboard Cite

The wear behavior of an A2218 alloy and an A2218/Al 3 Fe composite fabricated by the plasma synthesis method was investigated under dry sliding conditions. The wear tests were carried out at a sliding speed of 0.2 m/s and at the load range of 3-600 N. The variation of wear rate with applied load is composed of two regions for both materials and the two regions belong to mild wear. On the basis of observation and analysis on the worn surface, subsurface and the wear debris, the wear mechanism acting on each region was identified. At low loads, oxidative wear is the main wear mechanism and at high loads, the wear is controlled mainly by delamination and adhesive wear mechanism and oxidative wear is an additional wear mechanism. The A2218/Al 3 Fe composite exhibits an improved wear resistance at lower loads. On the contrary, at higher loads, due to the presence of the mechanical mixed layer on the worn surface of the A2218 monolithic alloy, both the monolithic alloy and composite exhibit similar wear rate.

show abstract

Section: Wear Regimesupporting

confidence: 74%

Dry Sliding Wear Behavior of A2218/Al<SUB>3</SUB>Fe Composites Fabricated by Plasma Synthesis Method

et al. 2002

View full text Add to dashboard Cite

show abstract

“…At high values of normal load and sliding speed, the localized melt and slip and the large plastic deformations (caused by the high frictional heat) are the dominant factors contributing to the removal of surface film from the wear surface. The removal of this surface film will increase the wear rate of hybrid Al composites under these conditions [35][36][37]. Therefore, the conditions that will result in superior wear properties of these hybrid composites should be identified.…”

Section: Introductionmentioning

confidence: 99%

Fabrication characteristics and tribological behavior of Al/SiC/Gr hybrid aluminum matrix composites: A review

Singh

2016

Friction

121

View full text Add to dashboard Cite

Improvement in surface properties and retainment of bulk properties are essential requirements for the design of components for wear resistance applications. This paper summarizes various features of Al/SiC/Gr hybrid composites that can be employed in different tribological applications. The study has revealed that the processing route plays a significant role in obtaining a homogeneous structure of these composites. In powder metallurgy, the selection of sizes of the matrix and reinforcement powders is crucial, whereas the wettability between the reinforcement particles and molten alloy is a major challenge in liquid metallurgy. The incorporation of SiC particles increases the mechanical strength and wear performance of Al composites. However, ejection of these particles can reduce the wear performance of Al composites under severe conditions. The addition of Gr particles helps in the formation of a thick and extensive tribolayer on the wear surface. This layer reduces direct contact between the rubbing surfaces, thereby decreasing the wear rate under certain conditions. Morphological analysis of worn surfaces has confirmed that the hybrid composites exhibit superior wear properties than the pure Al alloy and the ceramic-reinforced composite. However, increase in the Gr content beyond a limiting value can deteriorate the tribological properties of these composites. Therefore, true optimization of a tribosystem (of the hybrid composite and counterface) can be achieved by selecting appropriate reinforcement contents.

show abstract

“…The MML gets fractured during the wear process and finally removed by the formation of lateral and transverse cracking. The cracks are generally initiated at the interface of MML and the plastically deformed zone and propagate along the weaker region in MML [26]. This is a scraping, grinding mechanism that rubs away metal surfaces and can be caused by the scouring action of the abrasives in the abrasive paper.…”

Section: Discussionmentioning

confidence: 99%

Aluminium Alloy-Based Metal Matrix Composites: A Potential Material for Wear Resistant Applications

Dasgupta

2012

ISRN Metallurgy

View full text Add to dashboard Cite

Aluminium alloy-based metal matrix composites (AMMCs) have been by now established themselves as a suitable wear resistant material especially for sliding wear applications. However, in actual practice engineering components usually encounter combination of wear types. An attempt has been made in the present paper to highlight the effect of dispersing SiC in 2014 base alloy adopting the liquid metallurgy route on different wear modes like sliding, abrasion, erosion, and combinations of wear modes like cavitation erosion, erosion abrasion, sliding abrasion, and the results obtained compared with the base alloy. It is found that there are a number of contributing factors for the resulting wear and all are not necessarily derogatory in nature. The limits within which the AMMCs can exhibit superior performance over the base alloy have been discussed. Worn surface and subsurface studies have been carried out to understand the mechanism of material removal and the role of the different contributing factors to material removal. Wear mechanisms that have been prevalent have been suggested and the possibility of making wear resistant components from the MMCs is discussed based on the experimental results obtained.

show abstract

Correlation between the characteristics of the mechanically mixed layer and wear behaviour of aluminium, Al-7075 alloy and Al-MMCs

Cited by 332 publications

References 15 publications

Dry Sliding Wear Behavior of A2218/Al<SUB>3</SUB>Fe Composites Fabricated by Plasma Synthesis Method

Dry Sliding Wear Behavior of A2218/Al<SUB>3</SUB>Fe Composites Fabricated by Plasma Synthesis Method

Fabrication characteristics and tribological behavior of Al/SiC/Gr hybrid aluminum matrix composites: A review

Aluminium Alloy-Based Metal Matrix Composites: A Potential Material for Wear Resistant Applications

Contact Info

Product

Resources

About