Metallurgical assessment of AA7075 – T6 with x wt% tungsten carbide nanoparticle surface composites processed by FSP route
| Autor: | R. Soundararajan, M. Kovarthanam, S. Jeyasurya, S. Naveen Prasath, L. Feroz Ali |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
010302 applied physics
Friction stir processing Materials science Scanning electron microscope Metallurgy Energy-dispersive X-ray spectroscopy 02 engineering and technology 021001 nanoscience & nanotechnology Microstructure 01 natural sciences chemistry.chemical_compound chemistry Tungsten carbide 0103 physical sciences Dynamic recrystallization Grain boundary Composite material 0210 nano-technology Electron backscatter diffraction |
| Zdroj: | Materials Today: Proceedings. 45:2152-2158 |
| ISSN: | 2214-7853 |
| DOI: | 10.1016/j.matpr.2020.10.003 |
| Popis: | Our proposed research works the ideal way was to improve the aluminum alloy material lifetime by incorporating nanoparticle via friction stir processing (FSP) and it was evident from augmenting metallurgical view. The experimental work was carried out by varying tungsten carbide (WC) nanoparticles of 0, 3, 6 and 9 wt% with heat treated aluminium alloy (AA7075-T6) as a matrix through FSP route. The prepared samples were further assessing the metallurgical assessment through microstructure, scanning electron microscope, x-ray diffraction, energy dispersive spectroscopy and electron back-scattered diffraction analysis. The obtained results revealed that the homogeneous distribution of WC nanoparticles in the matrix stir zone having the absence of intermetallic reactions was observed in the microstructure and x-ray diffraction test. The significant degree of grain refinement was observed in the scanning electron microscopy in which composites due to dynamic recrystallization and pinning effect of tungsten carbide particles in the matrix has occurred. Energy dispersive x-ray spectroscopy analysis and scanning electron microscope analysis indicated the presence of tungsten carbide nanoparticles along the processed region in well-defined grain boundaries and its fine spread of grains across the stir zone by dynamic recrystallization. Also, the electron backscatter diffraction study indicated the good distribution of ceramic particles spread across the stir zone. On the whole, a great significance improvement was achieved in metallurgical behavior during the 9 wt% of WC nanoparticles addition in the matrix during the FSP route. These processed surface composites were suggested for automobile and marine components processed in the future. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full Text from ScienceDirect