Microstructure, tribological and mechanical properties of Al7075 / Ti3AlC2 MAX-phase surface composite produced by friction stir processing

Vacuum ◽  
2018 ◽  
Vol 155 ◽  
pp. 134-141 ◽  
Author(s):  
Saeed Ahmadifard ◽  
Amir Momeni ◽  
Simin Bahmanzadeh ◽  
Shahab Kazemi
Keyword(s):  
Mechanical Properties ◽  
Friction Stir Processing ◽  
Max Phase ◽  
Friction Stir ◽  
Surface Composite ◽  
Phase Surface

scholarly journals Surface Hybrid Nanocomposite Produced by Friction Stir Processing: Microstructural Evolution, Mechanical Properties and Tribological Behavior

2021 ◽  
Author(s):  
Saeed Ahmadifard ◽  
Nasir Shahin ◽  
Mojtaba Vakili-azghandi ◽  
Shahab Kazemi
Keyword(s):  
Electron Microscopy ◽  
Mechanical Properties ◽  
Scanning Electron Microscopy ◽  
Friction Stir Processing ◽  
Travel Speed ◽  
Hybrid Nanocomposites ◽  
Max Phase ◽  
Hybrid Nanocomposite ◽  
Friction Stir ◽  
Scanning Electron

Abstract This study investigates the effects of incorporating Ti3AlC2 MAX phase into Al7075-T6 alloy by friction stir processing as well as adding Al2O3 nanoparticles to obtain a surface hybrid nanocomposite. These composites were successfully prepared by friction stir processing with a rotational speed of 1000 rpm and a travel speed of 28 mm/min after 3 passes. Optical, atomic force and scanning electron microscopy as well as microhardness, tensile and wear tests utilized to characterize the fabricated surface hybrid nanocomposites. Results showed that the maximum tensile strength and hardness value were achieved for Al-100% Al2O3 composite due to more grain refinement and effective dispersion of nanoparticles. Due to its laminar structure, Ti3AlC2 MAX phase enhanced better tribological characterization whereas Al2O3 nanoparticles cause better mechanical properties. Scanning electron microscopy tests revealed that the wear mechanism changes from adhesive for Al7075 alloy to adhesive-abrasive for the nanocomposite specimens.

Effect of Friction Stir Processing on Mechanical Properties of Surface Composite of Cu Reinforced with Cr Particles

2013 ◽  
Vol 829 ◽  
pp. 851-856 ◽  
Author(s):  
Bahram A. Khiyavi ◽  
Abdolhossein Jalali Aghchai ◽  
Mohammadreza Arbabtafti ◽  
Mohamad Kazem Besharati Givi ◽  
Jalal Jafari
Keyword(s):  
Mechanical Properties ◽  
Friction Stir Processing ◽  
Metal Matrix ◽  
Wear Test ◽  
Traverse Speed ◽  
Mechanical Behaviors ◽  
Wear Properties ◽  
Friction Stir ◽  
Surface Composite ◽  
Wear Tests

The main aims of this study is to produce copper reinforced metal matrix composite (MMC) using micron sized chromium particles via friction stir processing (FSP) in order to studying effects of adding Cr particles to copper based matrix by FSP.Microstructures, microhardness and wear properties have been studied in order to evaluate the microstructures and mechanical properties of fabricated composites. the microstructure properties are evaluated by optical microscopy (OM) and field emission scanning electron microscopy (FESEM). The mechanical behaviors of the samples are determined by microhardness and wear tests. The results showed that the grain size of fabricated composite reduced. also it is indicated that in comparison to base copper microhardness of FSPed composites in stir zone (SZ) have been increased significantly. the results of wear test showed that in comparison with specimen with traverse speed of 80 mm/min , higher traverse speed of 160 mm/min increase wear rate of cylindrical pins.

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