On the surface roughness of Al-4%Cu/B4C metal matrix composites machined by milling operation

Uebeyli, Mustafa
ACIR, Adem
Karakas, M. Serdar
In this study, the influence of cutting speed, feed rate and type of cutting tools on the surface roughness of the boron carbide particle reinforced aluminum composites in the milling operation was investigated. For this purpose, the composite samples were produced using powder metallurgy route. And then, the milling operations were carried out by using three different cutting tools at various feed rates (0.15, 0.20 and 0.25 mm/z) and cutting speeds (100, 130, 169 and 220 m/min). Experimental results showed that the surface roughness of the composites decreased significantly by increasing the cutting speed for all tools. Moreover, it was gradually increased for all tools when the feed rate was increased at the cutting speeds of 169 and 220 m/min.


Effects of SiC particulates on the fatigue behaviour of an Al-alloy matrix composite
Kaynak, Cevdet (2006-01-01)
In this study, the fatigue behaviour of aluminium matrix-silicon carbide (SiC) particulate reinforced composite specimens was investigated in comparison to the matrix aluminium alloy containing 12 wt% Si. Three different weight percentages of SiC particulates: 5, 10, and 15 in the size range of 40-60 gm were injected into the melt. Mg was also added to improve the wettability of Al-alloy matrix over SiC particulates resulting in better interfacial bonding. Test specimens were machined from squeeze casting b...
Microstructure effects on process outputs in micro scale milling of heat treated Ti6Al4V titanium alloys
Ahmadi, Masoud; Karpat, Yigit; ACAR, Ozgun; Kalay, Yunus Eren (2018-02-01)
This study investigates the influence of materials' microstructural characteristics, including grain size and phase fractions, in micro end milling of heat treated Ti6Al4V titanium alloys. Micro milling process conditions such as feed, depth of cut, and the cutting edge radius of the micro end mill are in the same order of magnitude as the grain size of the material, which gives rise to the anisotropic behavior of the multiphase materials and their deformation characteristics considering their grain size, g...
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Ögel, Bilgehan; Gürbüz, Rıza (2001-03-31)
A conventional hot pressing method was used to produce Al-Cu-SiC particulate metal matrix composites. The matrix alloy was prepared from elemental powders of Al and 5 wt.% Cu. The composite comprises 13.3 or 27.2 vol.% SiCp with an average size of 10 mum. The powder mixtures were hot pressed uniaxially under nitrogen atmosphere. It is shown that Cu aids in the Formation of a liquid phase. Practically pore free structures are obtained after pressing at 600 degreesC, Elastic modulus, tensile strength and yiel...
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DEMİR, TEYFİK; Ubeyli, Mustafa; Yıldırım, Raif Orhan (2008-12-01)
In this study, impact behavior of the aluminum alloys of 7075 and 5083 and the high-strength low-alloy steel, AISI 4140 was investigated under 7.62 mm armor piercing (AP) projectile experimentally. Various heat treatments were applied to the alloys AISI 4140 and 7075 to see the effect of hardness and strength on their ballistic behaviors. Experimental results showed that among the investigated materials, the best ballistic performance was attained with the alloy, 7075-T651 which maintained the ballistic pro...
Processing and assessment of aluminum ceramic fiber reinforced aluminum metal matrix composite parts for automotive and defense applications
Türkyılmaz, Gökhan; Kalkanlı, Ali; Department of Metallurgical and Materials Engineering (2009)
The aim of this study was to produce partially reinforced aluminum metal matrix composite components by insertion casting technique and to determine the effects of silicon content, fiber vol% and infiltration temperature on the mechanical properties of inserts, which were the local reinforcement parts of the components. Silicon content of alloys was selected as 7 wt% and 10 wt%. The reinforcement material, i.e. Saffil fiber preforms, had three different fiber vol% of 20, 25 and 30 vol% respectively. The inf...
Citation Formats
M. Uebeyli, A. ACIR, M. S. Karakas, and T. DEMİR, “On the surface roughness of Al-4%Cu/B4C metal matrix composites machined by milling operation,” SCIENCE AND ENGINEERING OF COMPOSITE MATERIALS, pp. 131–139, 2008, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/67775.