Effect of Impact Angle on Slurry Erosion Behaviour and Mechanisms of Carburized AISI 5117 Steel | ||||
| JES. Journal of Engineering Sciences | ||||
| Article 8, Volume 41, No 1, January and February 2013, Page 137-157 PDF (1.11 MB) | ||||
| Document Type: Research Paper | ||||
| DOI: 10.21608/jesaun.2013.114695 | ||||
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| Authors | ||||
| Y. M. Abd-Elrhman1; A. Abouel-Kasem2; K.M. Emara1; S. M. Ahmed3 | ||||
| 1Mechanical Engineering Department, Faculty of Engineering, Assiut University, Assiut 71516, Egypt | ||||
| 2Mechanical Engineering Department, Faculty of Engineering, King Abdulaziz University, 344 Rabigh 21911, Kingdom of Saudi Arabia, Also, Mechanical Engineering Department, Faculty of Engineering, Assiut University, Assiut 71516, Egypt | ||||
| 3Mechanical Engineering Department, Faculty of Engineering, Majmaah University ,Saudi Arabia | ||||
| Abstract | ||||
| The paper reports a study of slurry erosion of carburized AISI 5117 steel using whirling-arm rig. The study is mainly focused on studying the erosion wear resistance properties of AISI 5117 steel after carburizing at different impact angles. The mechanisms of erosion wear at different impact angles are presented using SEM examination of eroded samples. In addition, the SEM images of eroded samples at different stages are presented for better understanding of erosion mechanisms at different angles. The tests were carried out with particle concentration of 1 wt %, and the impact velocity of slurry stream was 15 m/s. Silica sand having a nominal size range of 250 – 355 μm was used as an erodent. The results showed that, carburizing process of steel increased the erosion resistance and hardness compared with untreated material for all impact angles. The erosion resistance of AISI 5117 steel increases by 70, 57, 60 and 36 % at an impact angle of 30º, 45º, 60º and 90º, respectively as result of carburizing, i.e. the effectiveness of carburizing was the highest at low impact angles. Treated and untreated specimens behave as ductile material, and the maximum mass loss appears at impact angle of 45o. Plough grooves and cutting lips appears for acute impact angle, but the material extrusions are for normal impact angles. The erosion traces are wider and deeper for untreated specimens comparing by the shallower and superficial ones for the carburized specimens. | ||||
| Keywords | ||||
| Slurry erosion; carburizing; impact angle; AISI 5117 steel; wear resistance; erosion mechanisms | ||||
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