Investigation of Tool Wear Behaviors in The Machining of Al 6061/B4C/GNP Hybrid Composite

Year 2022, Volume: 14 Issue: 2, 816 - 828, 31.07.2022

Selçuk Yağmur , Muharrem Pul

https://doi.org/10.29137/umagd.1096103

Cited By: 2

Abstract

In this study, the wear behavior of the used cutting tools was investigated by performing lathe machining experiments of the hybrid composite material reinforced with borcarbide (B4C) and graphene nanoplate (GNP) in different proportions into the Al 6061 alloy. It was aimed to determine the effect of B4C and GNP additives on tool wear. In the first stage of the experimental study, hybrid composite materials with different B4C and GNP reinforcement ratios were produced by vortex method. Machining experiments were carried out on the produced composite specimens in dry machining conditions, at constant cutting depth, using three different cutting speeds and feed rates. The wear behavior of the cutting tools used in machining experiments was evaluated by taking digital microscope images. Due to the increase in the B4C reinforcement ratio in the hybrid composite structure, significant increases in tool wear were observed in all cutting parameters. It has been understood that the GNP additive in the composite structure facilitates the machinability somewhat, graphene exhibits solid lubricant properties and reduces tool wear

Keywords

Al 6061 alloy, B4C, GNP, Composite, Machinability, Tool wear

Al 6061/B4C/GNP Hibrit Kompozitin İşlenmesinde Takım Aşınma Davranışlarının İncelenmesi

Abstract

Bu çalışmada Al 6061 alaşımı içerisine farklı oranlarda borkarbür (B4C) ve grafen nanoplaka (GNP) takviye edilen hibrit kompozit malzemenin tornada işleme deneyleri yapılarak kullanılan kesici takımların aşınma davranışları incelenmiştir. B4C ve GNP katkısının takım aşınması üzerindeki etkisinin belirlenmesi amaçlanmıştır. Deneysel çalışmanın ilk aşamasında vortex yöntemiyle farklı B4C ve GNP takviye oranlarında hibrit kompozit malzemeler üretilmiştir. Üretilen kompozit numuneler üzerinde kuru işleme koşullarında, sabit kesme derinliğinde, üç farklı kesme hızı ve ilerleme değeri kullanılarak CNC tornada işleme deneyleri gerçekleştirilmiştir. İşleme deneylerinde kullanılan kesici takımların dijital mikroskop görüntüleri çekilerek aşınma davranışları değerlendirilmiştir. Hibrit kompozit yapı içerisindeki B4C takviye oranının artışına bağlı olarak, tüm kesme parametrelerinde takım aşınmalarında önemli miktarlarda artışlar olduğu görülmüştür. Kompozit yapı içerisindeki GNP katkısının işlenebilirliği bir miktar kolaylaştırdığı, grafenin katı yağlayıcı özellik sergilediği ve takım aşınmalarını azaltıcı etki gösterdiği anlaşılmıştır.

Keywords

Al 6061 alaşımı, B4C, GNP, Kompozit, İşlelebilirlik, Takım aşınması

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