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Vaghari, Majid, Khayati, Gholam, Jenabali Jahromi, S.A.. (1398). Studying on the fatigue behavior of Al- Al2O3 metal matrix nano composites processed through powder metallurgy. , 52(2), 210-217. doi: 10.22059/JUFGNSM.2019.02.10
Majid Vaghari; Gholam Reza Khayati; S.A. Jenabali Jahromi. "Studying on the fatigue behavior of Al- Al2O3 metal matrix nano composites processed through powder metallurgy". , 52, 2, 1398, 210-217. doi: 10.22059/JUFGNSM.2019.02.10
Vaghari, Majid, Khayati, Gholam, Jenabali Jahromi, S.A.. (1398). 'Studying on the fatigue behavior of Al- Al2O3 metal matrix nano composites processed through powder metallurgy', , 52(2), pp. 210-217. doi: 10.22059/JUFGNSM.2019.02.10
Vaghari, Majid, Khayati, Gholam, Jenabali Jahromi, S.A.. Studying on the fatigue behavior of Al- Al2O3 metal matrix nano composites processed through powder metallurgy. , 1398; 52(2): 210-217. doi: 10.22059/JUFGNSM.2019.02.10

Studying on the fatigue behavior of Al- Al2O3 metal matrix nano composites processed through powder metallurgy

Journal of Ultrafine Grained and Nanostructured Materials
مقاله 10، دوره 52، شماره 2، اسفند 2019، صفحه 210-217    اصل مقاله (1016.09 K)
نوع مقاله: Research Paper
شناسه دیجیتال (DOI): 10.22059/JUFGNSM.2019.02.10
نویسندگان
Majid Vaghari1؛ Gholam Reza Khayati* 2؛ S.A. Jenabali Jahromi1
1Department of Materials Science and Engineering, School of Engineering, Shiraz University, Shiraz, Iran.
2Department of Materials Science and Engineering, Shahid Bahonar University of Kerman, Kerman, Iran.
چکیده
Excellent mechanical properties and fatigue performance of Al/Al2O3 metal-based nanocomposites caused to introduce this material as a good candidate for various applications. In this regard, the preparation and characterization of this composite can be considered as a hot issue for research. The study was carried out in several steps including: (i) preparation of Al/Al2O3 metal-based nanocomposites at various Al2O3 content as reinforcement (4, 6 and 8 wt.%) using wet attrition milling; (ii) hot forward extrusion process of prepared samples; (iii) determination of mechanical properties of prepared composite by tensile test; (iv) usage of rotating-bending fatigue test for determination of the fatigue performance of prepared composite and (v) analysis of the fracture surfaces of fatigue tests specimens to determine the mechanism/s of failure based on scanning electron microscope analysis. The results showed that the presence of Al2O3 nanoparticles up to 6 wt.% enhanced the fatigue strength of Al/Al2O3 nanocompositeswhile the higher amount of reinforcement has a detrimental effect on the fatigue strength. Also, the statistical nature of fatigue data confirmed the higher coherency as well as homogeneity of prepared composites by 6 wt.% of reinforcement. The EDX spectrum confirmed the presence of Al2O3 at the origin of crack. As a consequence, the most probable mechanisms for crack initiation through the cyclic loading can be considered as the fracture and/or detachment of reinforcement particles.
کلیدواژه‌ها
Aluminum؛ Nanocomposite؛ Powder metallurgy؛ Extrusion؛ Fatigue strength
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