Toz Metalurjisi Metoduyla Al-SiC Kompozit Malzeme Üretimi ve Aşınma Özelliklerinin Araştırılması

Abstract

In this study, SiC reinforced composite material was produced by applying powder metallurgy production technique as solid state method. Initially, mechanically grinding and mixing process of the aluminum and SiC powder was realized in turbula device containing steel ball. Then, mechanical tests and metallographic examinations of powder metal composite samples which were pressed at 500 MPa pressure and sintered for 2 hours at 650 °C were performed. After the characterization study such as density and hardness measurements, dry sliding wear test all of the composite materials were performed by using pin-on-disk method. Wear tests of composite were carried out under the different load (3-6-9-and 12 N) and at 1,15 m/s sliding speed for 200 m wear distance using SiC emery paper. Wear test results showed that composite materials containing SiC have better wear resistance according to matrix powder metal parts produced under the same conditions. Figure 1. Abrasive test machinePurpose: The main purpose of this study, investigation of the effects of SiC as a reinforcing element on the wear properties of aluminum matrix composite materials.Theory and Methods: In this study, for Al-SiC composite materials, powder metallurgy as a production method and dry sliding pin-on disc method as wearing method were used. Results:The homogeneous distribution of aluminum and SiC powders in each other has been accomplished successfully by mixing process in the turbula device. In the produced powder metal composite material, 30.9% hardness increase was obtained compared to the aluminum powder metal part which forms the matrix structure. According to the abrasive test results, adding to the matrix 10% by weight SiC caused a decrease in weight loss in the range of 48.4% to 79.6%.in composite materials. Conclusion:The mixing of aluminum and silicon carbide powders under the deformation effects of steel balls in the turbula device provided a homogeneous distribution of the powders within each other. This has resulted in significant improvements in the mechanical properties of the composite material, in particular the wear behavior.

Production of B4C Reinforced Composite Materials and Investigation of Their Bending Strength

“…al., 2020). In composite material production, particle size and the distribution of particles inside the matrix structure are determining parameters on the properties of mechanical of the composite material that is produced (Arık, Kırmızı & Özçatalbaş et al, 2017). The fabrication of MMCs is achieved by both how and cold fabrication methods such as powder metallurgy, die casting, vacuum and pressure infiltration, and hot extrusion.…”

Tribological and aging behavior of hybrid Al 7075 composite reinforced with B4C, SiC, and TiB2

“…In one of these studies, Arık produced a silicon mat-reinforced composite material with an Al matrix by applying the P/M production method. In his study, he showed that the homogeneous distribution of SiC in the matrix structure was acomplished by mechanical mixing and thus, its mechanical properties were improved [13]. In addition, Şimşek et al investigated microstructural changes and their effect on the wear performance of Al 7075 alloy aged over five different periods and the effect of aging time on wear behavior were revealed.…”

“…In this study, unlike other studies [2,[13][14][15], mechanically ground powders were placed in a stainless steel casting chamber and samples were formed by pouring in the molten Al 7075 alloy. Unlike the work done by Aksöz and Bostan, rather than by directly applying the casting process, this study utilized the mechanical properties provided by the grinding to create better hardness and homogeneous distribution properties in the parts produced via P/M [16].…”

Alüminyum Matrisli Kompozitlerde Tungsten Karbür ve Grafen Takviyelerinin Mekanik Özelliklere Etkileri Üzerine Bir Araştırma

“…Saf alüminyumun aksine çekme dayanımı, yoğunluk, süneklik, şekillenebilirlik, işlenebilirlik, kaynak kabiliyeti ve korozyon direnci gibi özellikler dikkate alınarak alaşımlı alüminyum üretilmesi ve kullanılması ile birlikte alüminyum matrisli kompozit malzeme üretimi önemli ölçüde artarak devam etmiştir [1,2]. Metal matris kompozitlerde matris malzemesi olarak kullanılan, alüminyum metalinin mekanik özelliklerini iyileştirmek için partikül haldeki Al 2 O 3 [3], SiC [4], Si 3 N 4 [5] B 4 C [6], SiO 2 [7], ZrO 2 [8], WC [9] ve Grafen [10] gibi birçok takviye elamanı kullanılmaktadır [11][12][13][14] Alüminyum alaşımlı takviyeli kompozit malzemelerin mekanik özellikleri genel olarak matrisin özelliğine, ıslanma yeteneğine, takviye oranına ve takviye çapına bağlı olmaktadır [12,13].…”

“…benzinli motorlar için yeni bir silindir bloğu üretmiştir. Bununla birlikte, fren diskleri, %15 Al 2 O 3 takviyeli AA6061 alaşımı tekerlek çivileri, %20 SiC takviyeli Al 9 Si Golf sopası başlığı ve fren kampanaları, alüminyum matrisli kompozit malzemelerden üretilmektedir [11,13]…”