Effect of temperature on the sliding wear performance of Al alloys and Al matrix composites

Wilson, Scott; Alpas, A.T.

doi:10.1016/0043-1648(96)06923-2

Cited by 127 publications

(60 citation statements)

References 8 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…It is clear that the mild-to-severe wear transition occurs with the load increasing. This is the same as previously reported results [6][7][8]. The critical load significantly reduces with the ambient temperature increasing.…”

Section: Wear Behaviorssupporting

confidence: 91%

“…That is, mild wear can be divided into oxidation wear and delamination wear; severe wear contains plastic extrusion wear and melting wear. In addition, Wilson and Alpas [7] put forward that a mild-to-severe wear occurred at a critical surface temperature. As the contact temperature surpassed a critical value (about 0.4 times melting point of alloy), the mild-to-severe wear transition occurs.…”

Section: Introductionmentioning

confidence: 98%

“…Therefore, the study on the tribological behavior of aluminum alloys is becoming increasingly important. Aplas et al studied wear mechanism of aluminum alloys [6][7][8]. They found that as sliding speed and load increased, wear mechanism changed from mixing/ oxidation into delamination and finally into severe metal wear.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Dry sliding wear performance of 7075 Al alloy under different temperatures and load conditions

Yang

Sun

et al. 2015

Rare Met.

View full text Add to dashboard Cite

Dry sliding wear tests were performed for 7075 Al alloy under a load of 25-250 N at 25-200°C. The wear behaviors and mechanisms under various testing conditions were explored. A mild-to-severe wear transition is noticed to occur with an increase in the load at 25-200°C. With the temperature increasing, the wear loss decreases constantly under the low load of less than 50 N. It can be suggested that the 7075 Al alloy presents a high wear resistance under a high ambient temperature and low load. Its high wear resistance is found to be attributed to the existence of mechanically mixing layer (MML). The predominant wear mechanism is adhesive and abrasive wear at room temperature. With the ambient temperature and load increasing, oxidative wear and plastic extrusive wear successively prevail due to thermal oxidation and softening of matrix.

show abstract

Section: Wear Behaviorssupporting

confidence: 91%

Section: Introductionmentioning

confidence: 98%

See 1 more Smart Citation

Dry sliding wear performance of 7075 Al alloy under different temperatures and load conditions

Yang

Sun

et al. 2015

Rare Met.

View full text Add to dashboard Cite

show abstract

“…• the type of the matrix and counter body material and their hardness [6][7][8], • the type of the reinforcements, their shape, size and volume fraction [9][10][11] and • testing conditions (load, speed, temperature, type of relative motion, lubrication and environment) [12][13][14].…”

Section: Introductionmentioning

confidence: 99%

Microstructural and Tribological Properties of A356 Al–Si Alloy Reinforced with Al2O3 Particles

et al. 2008

View full text Add to dashboard Cite

In the present study, the effect of the Al 2 O 3 particles (average size of 12 lm, 3 and 10 wt.%) reinforcement on the microstructure and tribological properties of Al-Si alloy (A356) was investigated. Composites were produced by applying compocasting process. Tribological properties of unreinforced alloy and composites were studied, using pin-on-disc tribometer, under dry sliding conditions at different specific loads and sliding speed of 1 m/s. Microhardness measurements, optical microscope and scanning electron microscope were used for microstructural characterization and investigation of worn surfaces and wear debris. During compocasting of A356 alloy, a transformation from a typical dendritic primary a phase to a non-dendritic rosette-like structure occurred. Composites exhibited better wear resistance compared with unreinforced alloy. Presence of 3 wt.% Al 2 O 3 particles in the composite material affected the wear resistance only at specific loads up to 1 MPa. The wear rate of composite with 10 wt.% Al 2 O 3 particles was nearly two order of the magnitude lower than the wear rate of the matrix alloy. Dominant wear mechanism for all materials was adhesion, with others mechanisms: oxidation, abrasion and delamination as minor ones.

show abstract

“…The interfacial bond strength, normal load, sliding distance, surface finish, environmental conditions, shape and size of ceramic particles and wt% of the reinforcement are the various parameters which influence the wear behavior of the metal matrix composites. Wilson and Alpas [38] tested unlubricated dry slippery wear behavior at high temperature of AA356/SiC, AA356/(SiC+graphite), and AA6061/Al 2 O 3 composite. They examined that the mixing of reinforcement particles enhance the wear property of the composite material significantly at elevated temperature compared to aluminum matrix alloy.…”

Section: B Tribological Examinationmentioning

confidence: 99%

Mechanical and Metallurgical Examinations of Stir Cast Aluminum Matrix Composites: A Review Study

Kaushik¹,

Singhaal²

2017

IJET

View full text Add to dashboard Cite

Abstract--The drift of research work from monolithic aluminum alloy to composite materials like Metal Matrix Composites (MMC's) is due to the world-wide proviso for economical, high working performance and superior quality materials. Metal matrix composites especially aluminum matrix composites (AMC's) due to their excellent strength with respect to their weight, superior wear resistance, economical and high corrosion resistance are extensively produced and utilized in several applications like, architectural components, structural applications, aerospace, automobile industry, ship building and many sports items and electrical and electronic components. The reinforcements like SiC, B 4 C, Al 2 O 3 , TiB 2 , Red mud, Graphite, Fly ash, and Coconut ash etc. can be easily incorporated as reinforcement agents in the molten melt by employing the economical and widely used stir casting technique, which improves strength, stiffness, fatigue, hardness, wear and creep properties of the AMCs. This paper gives an overview of mechanical, microstructural and wear performances of aluminum centered metal matrix composites produced by stir casting process reinforced with single and multiple types of reinforcements. The problems like reinforcement-metal matrix bonding, distribution of particles, wettability of reinforcing particles and agglomeration phenomenon are discussed in this paper. The effect of various reinforcement particles on aluminum matrix composites on mechanical properties like uts, ys, stiffness, hardness, fatigue, % E, wear and on resulting microstructure is discussed. The Modified and dual step stir casting technique for the fabrication of AMCs is also discussed in this paper. Keywords: Aluminum matrix composite (AMC), stir casting, reinforcement, mechanical properties, wear behavior I. INTRODUCTIONMetal based matrix composites reinforced with ceramic agents have a wide range of applications in aerospace, automobile, structural components and defense sector. Monolithic aluminum alloys have limitations in achieving good combinations of mechanical properties like strength, toughness, stiffness, wear resistance and density. Metal matrix composites are produced to overcome these shortcomings and to encounter the worldwide requirement for light weight materials with higher specific strength, corrosion resistant, high stiffness and excellent wear resistant properties [1][2]. The properties of aluminum alloy like low density, light weight, easy processing technique and fine engineering characterstics favored it as matrix material in MMC's [3]. The aluminum matrix series like AA2xxx, AA5xxx, AA6xxx, and AA7xxx have numerous applications in aerospace, defense instrument, architectural and structural components, automobile, sports good, and ship building [1][2][3][4].For the fabrication of metallic matrix composites several type of manufacturing methods are employed. The choice of appropriate manufacturing method highly alters the resulting composite microstructure, dispersion of ceramic agents, interfacial bonding betwe...

show abstract

Effect of temperature on the sliding wear performance of Al alloys and Al matrix composites

Cited by 127 publications

References 8 publications

Dry sliding wear performance of 7075 Al alloy under different temperatures and load conditions

Dry sliding wear performance of 7075 Al alloy under different temperatures and load conditions

Microstructural and Tribological Properties of A356 Al–Si Alloy Reinforced with Al2O3 Particles

Mechanical and Metallurgical Examinations of Stir Cast Aluminum Matrix Composites: A Review Study

Contact Info

Product

Resources

About