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Technical Brief

Particle Shape and Size Effects on Slurry Erosion of AISI 5117 Steels

[+] Author and Article Information
M. A. Al-Bukhaiti

Mechanical Engineering Department,
Faculty of Engineering,
Sana'a University,
Sana'a 1438, Yemen
e-mail: m.albukhaiti@gmail.com

A. Abouel-Kasem

Mechanical Engineering Department,
Faculty of Engineering,
King Abdulaziz University,
P.O. Box 344,
Rabigh 21911, Kingdom of Saudi Arabia
e-mail: aaahmed2@kau.edu.sa

K. M. Emara

Mechanical Engineering Department,
Faculty of Engineering,
Assiut University,
Assiut 71516, Egypt
e-mail: k.emara45@yahoo.com

S. M. Ahmed

Mechanical Engineering Department,
Faculty of Engineering,
Majmaah University,
P.O. Box 165,
Almajma'a 11952, Kingdom of Saudi Arabia
e-mail: shemy2007@yahoo.com

1Corresponding author.

Contributed by the Tribology Division of ASME for publication in the JOURNAL OF TRIBOLOGY. Manuscript received April 5, 2015; final manuscript received September 28, 2015; published online January 29, 2016. Assoc. Editor: Robert L. Jackson.

J. Tribol 138(2), 024503 (Jan 29, 2016) (8 pages) Paper No: TRIB-15-1109; doi: 10.1115/1.4031987 History: Received April 05, 2015; Revised September 28, 2015

Solid particle shape and size effects on the slurry erosion behavior of AISI 5117 carbon steels are investigated, using whirling-arm ring for two different erodent particles, namely, silica sand (SiO2) and silicon carbide (SiC). From this work, it was found that aspect ratio and circularity factor (CF) increase for silica sand and decrease for silicon carbide with increasing size. The erosion rate increased with the increase of particle size for the two types of erodent particles and its value was greater in the case of silicon carbide particles. At the same test conditions, it has been noticed that the particle size plays the major role in the slurry erosion of 5117 steels in comparison with the aspect ratio and circularity factor. Microcutting and plowing with serrated wear tracks were observed for coarse SiC particles having irregular and angular shape. But, for coarse SiO2 particles which had a rounded shape, the main mechanism was plowing with plain and smooth wear tracks for an impact angle of 30 deg. Indentations and material extrusion prevailed for the coarse size of the two erodents for an impact angle of 90 deg.

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References

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Figures

Grahic Jump Location
Fig. 4

Variation of CF values with measured size of erodent of silicon carbide (SiC) and silica sand (SiO2)

Grahic Jump Location
Fig. 3

Variation of aspect ratio with measured size of erodent of silicon carbide (SiC) and silica sand (SiO2)

Grahic Jump Location
Fig. 2

SEM image of SiC particles: (a) 220 grit, (b) 80 grit, (c) 60 grit, (d) 46 grit, (e) 36 grit, and (f) 24 grit

Grahic Jump Location
Fig. 1

SEM image of SiO2 particles

Grahic Jump Location
Fig. 7

Variation of wear rate with aspect ratio of silicon carbide (SiC) and silica sand (SiO2) at an impact angle of 30 deg

Grahic Jump Location
Fig. 8

Variation of wear rate with CF values of silicon carbide (SiC) and silica sand (SiO2) at an impact angle of 30 deg

Grahic Jump Location
Fig. 9

SEM photographs of specimen surfaces eroded at an impact angle of 30 deg by SiO2 particles: (a) 516.4 μm and (b) 112.7 μm; and SiC particles: (c) 692.7 μm and (d) 54.8 μm

Grahic Jump Location
Fig. 5

Variation of wear rate and number of particles with measured size of erodent of silicon carbide (SiC) and silica sand (SiO2) at an impact angle of 30 deg [8]

Grahic Jump Location
Fig. 6

Variation of wear rate and number of particles with measured size of erodent of silicon carbide (SiC) and silica sand (SiO2) at an impact angle of 90 deg [8]

Grahic Jump Location
Fig. 10

Images of high magnification of surfaces eroded at an impact angle of 30 deg by SiO2 particles: (a) 516.4 μm and (b) 112.7 μm; and SiC particles: (c) 692.7 μm and (d) 54.8 μm

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