Toz Metalurjisi Yöntemiyle Üretilen Fe Esaslı Fe-Ni-Cu Elmas Kesici Takımında Co’ın Etkisi

Yıl 2022, Cilt: 3 Sayı: 2, 194 - 205, 18.12.2022

İlyas Somunkıran Ertuğrul Çelik Büşra Tunç Çağdaş Güneş

https://doi.org/10.55546/jmm.1131636

Öz

Bu çalışmada toz metalürjisi (TM) tekniğiyle Fe esaslı Fe-Ni-Cu matrisine ağırlıkça farklı oranlarda (%10-20-30) kobalt (Co) ilave edilerek üretilen numunelerin mikroyapı ve bazı mekanik özellikleri incelendi. Sinterleme; 920 ºC’ de, 35 MPa basınç altında, 4 dk süreyle argon gazı atmosferinde yapıldı. Numunelerin mikroyapısal karakterizasyonu X-ışınları analizi (XRD), taramalı elektron mikroskobu (SEM), enerji dağılım spektrometresi (EDS) ile incelendi. Yoğunluk ölçümleri yapılan numuneler, sertlik ve üç noktalı eğme deneylerine tabi tutuldu. Sonuç olarak; takviye oranının artması ile porozitede azalma meydana geldi. En yüksek sertlik ve yoğunluk değerinin %20 Co ilaveli numunede olduğu görüldü. Co oranı ilavesiyle başlangıçta eğme gerilmesi ve yüzde uzamanın arttığı ve artan Co oranıyla birlikte eğme gerilmesi ve yüzde uzamanın azaldığı gözlendi.

Anahtar Kelimeler

Elmas kesici takımlar, Toz metalurjisi, Kobalt, Demir esaslı alaşım

The Effect of Co on Fe-Based Fe-Ni-Cu Diamond Cutting Tool Produced by Powder Metallurgy Method

Öz

In this study, microstructure and some mechanical properties of the samples were investigated produced by adding different weight (10-20-30%) cobalt (Co) to Fe-based Fe-Ni-Cu matrix by powder metallurgy (TM) technique. Sintering; It was carried out at 920 ºC, under 35 MPa pressure, for 4 minutes in an argon gas atmosphere. Microstructural characterization of the samples was examined by X-ray analysis (XRD), scanning electron microscope (SEM), and energy distribution spectrometry (EDS). Density measurements were made and the samples were subjected to hardness and three-point bending tests. As a result; The porosity decreased with the increase in the reinforcement ratio. It was observed that the highest hardness and density value was in the sample with 20% Co added. It was observed that the bending stress and percent elongation increased with the addition of Co ratio and the bending stress and percent elongation decreased with increasing Co ratio.

Anahtar Kelimeler

Diamond cutting tools, Powder metallurgy, Cobalt, Iron baded alloy

Kaynakça

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