Effect of FSP parameters and tool geometry on microstructure, hardness, and wear properties of AA7075 with and without reinforcing B4C ceramic particles
| Autor: | Stefania Toschi, Mohamed M. Z. Ahmed, Lavinia Tonelli, Iman El-Mahallawi, H. R. Ammar, R. M. Ramadan, M. Shaaban, Alessandro Morri, Lorella Ceschini |
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| Přispěvatelé: | Tonelli, Lavinia, Morri, A., Toschi, S., Shaaban, M., Ammar, H.R., Ahmed, M.M.Z., Ramadan, R.M., El-Mahallawi, I., Ceschini, L. |
| Rok vydání: | 2019 |
| Předmět: |
0209 industrial biotechnology
Aluminum alloy Friction stir processing Materials science Composite number Alloy 02 engineering and technology engineering.material Indentation hardness Homogeneous distribution Industrial and Manufacturing Engineering AA7075 B 4 C 020901 industrial engineering & automation Metal matrix surface composite Ceramic Composite material Wear behavior Mechanical Engineering Microhardne Computer Science Applications1707 Computer Vision and Pattern Recognition Microstructure Microstructural analysi Computer Science Applications Control and Systems Engineering visual_art engineering visual_art.visual_art_medium Layer (electronics) Software |
| Zdroj: | The International Journal of Advanced Manufacturing Technology. 102:3945-3961 |
| ISSN: | 1433-3015 0268-3768 |
| DOI: | 10.1007/s00170-019-03442-6 |
| Popis: | The aim of this work is to produce a surface composite by incorporating B 4 C particles on the surface of AA7075 alloy through friction stir processing (FSP) using both a pinless and a cone pin tool. The influence of friction stir processing parameters on the microstructure, hardness, and wear properties of the processed surface composites was investigated. The studied parameters include rotational tool speed (400 and 600rpm) and number of passes (1, 2, 3, and 4 passes). Microstructural analysis and microhardness profiles were performed on cross sections of FSPed samples at different depths. Wear behavior of the processed samples was evaluated by means of dry sliding tests. The results indicate that (i) increasing the number of passes results in improving the distribution of B 4 C reinforcing particles, (ii) samples processed with the pinless tool displayed a more homogeneous distribution of the reinforcement in the outer layer of the material with respect to the samples processed with the cone pin, (iii) the addition of B 4 C particles improved the wear resistance of the AA7075 alloy even if it led to a raise in the coefficient of friction. |
| Databáze: | OpenAIRE |
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