Effects of reinforcements on sliding wear behavior of aluminum matrix composites

This study aims to investigate the effect of volume fraction of commercially pure titanium (CP-Ti) on microstructural, mechanical, and tribological features of A356 aluminum matrix composites. Vacuum-assisted melt infiltration casting was performed to produce composites with 50%, 65%, 75%, and 80% CP-Ti contents. CP-Ti sawdusts were assembled under mechanical pressure in order to attain porous one-piece CP-Ti preforms which were infiltrated by A356 melt at 730 °C under 10−5 Pa vacuum atmosphere. TiAl3 layer was formed at the interface between A356 and CP-Ti phases. Owing to increased diffusion time through decreased diffusion path length, both thickness and hardness of TiAl3 phase were increased with increasing CP-Ti ratio, whereas the best wear resistance was obtained at 65% CP-Ti ratio. The main reason for decrease in wear resistance of 75% and 80% CP-Ti reinforced composites was fragmentation of TiAl3 layer during wear process due to its excessively increased brittleness. Strongly bonded TiAl3 phase at the interface provided better wear resistance, while weakly bonded ones caused to multiply wear rate.

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Effect of Wetting Agent and Carbide Volume Fraction on the Wear Response of Aluminum Matrix Composites Reinforced by WC Nanoparticles and Aluminide Particles

Archives of Metallurgy and Materials ◽

10.1515/amm-2017-0184 ◽

2017 ◽

Vol 62 (2) ◽

pp. 1235-1242 ◽

Cited By ~ 7

Author(s):

A. Lekatou ◽

N. Gkikas ◽

A.E. Karantzalis ◽

G. Kaptay ◽

Z. Gacsi ◽

...

Keyword(s):

Sliding Wear ◽

Volume Fraction ◽

Aluminum Matrix ◽

Wetting Agent ◽

Salt Flux ◽

Ex Situ ◽

Aluminum Matrix Composites ◽

Matrix Composites ◽

Mechanical Stirring ◽

Wear Response

AbstractAluminum matrix composites were prepared by adding submicron sized WC particles into a melt of Al 1050 under mechanical stirring, with the scope to determine: (a) the most appropriate salt flux amongst KBF4, K2TiF6, K3AlF6and Na3AlF6for optimum particle wetting and distribution and (b) the maximum carbide volume fraction (CVF) for optimum response to sliding wear. The nature of the wetting agent notably affected particle incorporation, with K2TiF6providing the greatest particle insertion. A uniform aluminide (in-situ) and WC (ex-situ) particle distribution was attained. Two different sliding wear mechanisms were identified for low CVFs (≤1.5%), and high CVFs (2.0%), depending on the extent of particle agglomeration.

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Effect of Processing Parameters on Friction Stir Welded Aluminum Matrix Composites Wear Behavior

Materials and Manufacturing Processes ◽

10.1080/10426914.2012.700156 ◽

2012 ◽

Vol 27 (12) ◽

pp. 1419-1423 ◽

Cited By ~ 21

Author(s):

Adel Mahmood Hassan ◽

Mohammed Almomani ◽

Tarek Qasim ◽

Ahmed Ghaithan

Keyword(s):

Wear Behavior ◽

Aluminum Matrix ◽

Processing Parameters ◽

Aluminum Matrix Composites ◽

Matrix Composites ◽

Friction Stir

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Tribological Behavior of AA7050-ZrSiO4 Composites Synthesized by Stir Casting Technique

Mechanics and Mechanical Engineering ◽

10.2478/mme-2019-0026 ◽

2019 ◽

Vol 23 (1) ◽

pp. 198-201 ◽

Cited By ~ 4

Author(s):

S. Sakthivelu ◽

M. Meignanamoorthy ◽

M. Ravichandran ◽

P. P. Sethusundaram

Keyword(s):

Tribological Behavior ◽

Wear Behavior ◽

Matrix Material ◽

Aluminum Matrix ◽

Stir Casting ◽

Aluminum Matrix Composites ◽

Wear Loss ◽

Matrix Composites ◽

Casting Technique ◽

Pin On Disc

AbstractThis research made an attempt to synthesize aluminum metal matrix composites through stir casting technique. The matrix material chosen in this study was AA7050 and the reinforcement material was ZrSiO4. The composites AA7050, AA7050-10%ZrSiO4, and AA7050-15%ZrSiO4were used. The wear behavior of the aluminum matrix composites was investigated by using pin-on-disc tribometer. The advanced material has substantial development in tribological behavior when the reinforcement percentage is increased. From the experimental results, it was confirmed that sliding distance of 1200 m, applied load of 3 N and sliding speed of 2 m/s result in minimum wear loss and coefficient of friction, while adding 10%ZrSiO4to the AA7050.

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