Browsing by Author "Kaplan Y."

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Comparison of the effects of b4C and SiC Reinforcement in Al-Si Matrix Alloys Produced via PM Method
(2019-01-01) Kaplan Y.; Tan E.; Ada H.; Aksöz S.
Reinforcement kind and ratios have significant effects on the metal matrix composite (MMC) materials. In this study, two different (B4C and SiC) reinforcement compounds between 5 and 15 wt% reinforcement ratios were used in Al-Si main matrix composite materials. Samples were produced via powder metallurgy (PM) method and were subjected to metallographic investigation with; SEM, EDS, FASTMAP, Optical Microscope analyzing methods. Microvickers measurements were carried out as HV1 load. The effects of B4C and SiC reinforcement in MMC were compared in details with these investigations.
Production of the aa2196-tib2 MMCs via PM Technology
(2019-01-01) Tan E.; Kaplan Y.; Ada H.; Aksöz S.
In this study, metal matrix composite (MMC) materials were produced via powder metallurgy (PM) technology. Main matrix was obtained with AA2196 (Al-Li Alloy) and TiB2 was used as reinforcement materials. In study; TiB2 reinforcements ratio were chosen between 5 and 15%wt. The metallographic investigation was realized with; SEM, EDS, FASTMAP, Optical Microscope analyzing techniques. Hardness values were obtained with HV1. In the study, the reinforcements could be distributed in main matrix homogeneously, via PM technique. The MMCs hardness values increased with the edition of TiB2 reinforcement.
The effect of aging processes on tribo-metallurgy properties of al based ternary alloys product by p/m technique
(2020-01-01) Kaplan Y.; Aksöz S.; Ada H.; İnce E.; Özsoy S.
In this study, Al matrix composites consisting of different amounts of Zn, Cu, and Mg were produced using the powder metallurgy technique. In the alloying, powders were ball milled for 120 min via mechanical alloying. After alloying process, the powders were pressed at 800 MPa at room temperature. Sintering (2 h at 600 °C in argon atmosphere), solution treatment (2 h at 480 °C), and aging processes (3, 6, 9, and 12 h, respectively, at 120 °C) were applied to the samples. The hardness and tribo-metallurgy properties of the products were investigated. After sintering, the hardness values of the three alloys were close to each other; however, the solution treatment after sintering caused the hardness values to increase significantly. It was determined that the Al-2Zn-5Cu-4Mg alloy had the highest hardness increase with the 6-h aging heat treatment. The wear resistance of the materials in all the compositions had increased. The highest wear resistance and lowest friction coefficient were obtained for the Al-2Zn-5Cu-4Mg alloy with the 6-h aging heat treatment.