Abrasive wear resistance of aluminium alloy/ceramic particulate composites

García‐Cordovilla, C.; Narciso, J.; Louis, E.

doi:10.1016/0043-1648(95)06801-5

Cited by 129 publications

(56 citation statements)

References 9 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Straffelini et al [26] found that the matrix hardness exerts a strong influence on the dry sliding wear behaviour of Al 2 O 3 particles reinforced composite, and that the composite with the lowest matrix hardness displays the lowest wear rate. On the other side, García-Cordovilla et al [7] confirms that the higher hardness of the composite materials was associated to a lower wear rate, but the dependence was not linear. In the present investigation, the wear rate is also considered to be inversely proportional to the hardness of the material and this is confirmed by the results of the total wear rate on hardness dependence (Fig.…”

Section: Discussionmentioning

confidence: 91%

See 1 more Smart Citation

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

Section: Discussionmentioning

confidence: 91%

“…• 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

show abstract

“…Composite 10-35 is harder than composite 10-12, but also it has larger reinforcement particles. García-Cordovilla et al [34] showed that the composites with smaller reinforcement particles exhibit lower abrasive wear resistance. Since the matrix/particles' interfacial area, for the same content of particles, decreases as the size of the particles increases, large particles remain embedded longer than small particulates, until the matrix can no longer support them or until they are broken down into smaller pieces.…”

Section: Pin-on-disc Testingmentioning

confidence: 98%

Possibility of the Abrasive Wear Resistance Determination with Scratch Tester

et al. 2009

View full text Add to dashboard Cite

Abrasion wear resistance is very important in many applications and it is not a surprise that there are many laboratory test methods for its determination. In this article, a possibility of the abrasive wear resistance determination with scratch tester, as a relatively easy and quick test method, was analysed and compared with the standard test method for pin abrasion testing (ASTM G 132). Materials used in the tests were: two ferrous-based coatings (deposited on an Al-Si alloy substrate with atmospheric plasma spraying), two aluminium-based composite materials with 10 wt% of Al 2 O 3 reinforcements (produced with compocasting technique) and grey cast iron, known as a material with good abrasive wear resistance. Coefficient of friction and wear of the samples were investigated with both abrasion wear test methods and analysed in correlation with their mechanical properties.

show abstract

“…Finally, the main growth direction of Al4C3 was longitudinal During friction, the entire graphite lubricating film can be formed on the worn surface of C/C-Al-Mg composites with metal particles, as shown in Figure 8b. The formation of stable transfer layer protected the mating surfaces from further direct contact, leading to mild wear [42][43][44][45][46][47]. The metal particles in the carbon matrix provided protection to the softer matrix during abrasive sliding and strengthened the matrix.…”

Section: Discussionmentioning

confidence: 99%

Effect of Al–Mg Alloy Infiltration on Mechanical and Electrical Properties for Carbon/Carbon Composites

2018

View full text Add to dashboard Cite

Under vacuum Al-Mg alloy, liquids were successfully infiltrated into carbon/carbon (C/C) composites at high temperatures. Then, the mechanical properties, the metallographics, the scanning electron microscope images, the transmission electron microscope images, the X-ray diffraction images, and the energy dispersive spectroscopy results of C/C-Al-Mg composites were analyzed. The result showed that the bending property of C/C-Al-Mg composites reached 183 MPa whereas that of C/C composites totaled 165 MPa. The compressive strength of C/C-Al-Mg measured 206 MPa whereas that of C/C composites amounted to 142 MPa. The flexural strength and compressive strengths of the steeped metal sliders measured 121 and 104 MPa, respectively. The alloy liquid infiltrated into the matrix by forming a "network conduction" structure which reduced the resistivity and improved the conductivity of the composites. The resistivity of C/C-Al-Mg totaled 1.63 µΩm whereas that of C/C was 3.56 µΩm. During infiltration, an excellent wettability was observed between Al and the carbon matrix due to the existence of Al 4 C 3 . The friction coefficients of C/C, the steeped metal slide, and C/Al-Mg were 0.152, 0.068, and 0.189, respectively. The properties of C/C-Al-Mg composites meet the performance requirements of locomotive pantograph sliders.

show abstract

Abrasive wear resistance of aluminium alloy/ceramic particulate composites

Cited by 129 publications

References 9 publications

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

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

Possibility of the Abrasive Wear Resistance Determination with Scratch Tester

Effect of Al–Mg Alloy Infiltration on Mechanical and Electrical Properties for Carbon/Carbon Composites

Contact Info

Product

Resources

About