Investigation of The Joining Interface of Copper-Titanium Bimetallic Composite Materials Manufactured Using Explosive Welding Method

Yıl 2024, Cilt: 27 Sayı: 1, 47 - 58, 29.02.2024

Mehmet Serkan Yıldırım Yakup Kaya

https://doi.org/10.2339/politeknik.1091491

Öz

In this study, copper (Cu) and titanium (Ti) plates were joined by explosion welding method using different explosive rates and Cu-Ti bimetallic composite materials were produced. The effect of explosive rate on the bonding interface of the produced Cu-Ti bimetallic composite materials was investigated by microstructure studies and mechanical tests. Optical microscope (OM), scanning electron microscope (SEM), energy dispersive spectrometry (EDS) and X-ray diffraction (XRD) methods were used for the joining interface characterization. In order to determine the mechanical properties of the joining interface, tensile-shear, notch impact, bending, twisting tests and microhardness studies were carried out. As a result of the microstructure investigations, it was determined that as the explosive rate increased, the fluctuation at the bonding interface increased and accordingly, the wavelength and amplitude increased. In addition, it was determined that Cu4Ti and Cu4Ti3 intermetallic phases were formed at an explosive rate of R=3, and intermetallic phases of Cu3Ti2, Cu4Ti3, CuTi2 and CuTi3 at an explosive rate of R=3.5. As a result of the mechanical tests, it was determined that there was no visible welding defect at the bonding interface.

Anahtar Kelimeler

copper, titanium, explosive welding, joining interface

Patlamalı Kaynak Yöntemi Kullanılarak Üretilen Bakır-Titanyum Bimetalik Kompozit Malzemelerin Birleştirme Arayüzeyinin İncelenmesi

Öz

Bu çalışmada, bakır (Cu) ve titanyum (Ti) levhalar patlamalı kaynak yöntemiyle farklı patlayıcı oranları kullanılarak birleştirilmiş ve Cu-Ti bimetalik kompozit malzemeler üretilmiştir. Üretilen Cu-Ti bimetalik kompozit malzemelerin birleştirme arayüzeyi üzerinde patlayıcı oranının etkisi mikroyapı çalışmaları ve mekanik testler ile incelenmiştir. Birleştirme arayüzeyi karakterizasyonu için, optik mikroskop (OM), taramalı elektron mikroskobu (SEM), enerji dağılımlı spektrometre (EDS) ve X-ışını kırınımı (XRD) yöntemleri kullanılmıştır. Birleştirme arayüzeyi mekanik özelliklerini belirlemek için ise çekme-makaslama, çentik darbe, eğme, burulma testleri ve mikrosertlik çalışmaları yapılmıştır. Mikroyapı incelemeleri sonucunda, patlayıcı oranı arttıkça birleştirme arayüzeyindeki dalgalanma arttığı ve bu artışa bağlı olarak da dalga boy ve genliğinde artış tespit edilmiştir. Ayrıca, R=3 patlayıcı oranında Cu4Ti ve Cu4Ti3 R=3.5 patlayıcı oranında ise Cu3Ti2, Cu4Ti3, CuTi2 ve CuTi3 intermetalik fazlarının oluştuğu tespit edilmiştir. Mekanik testler sonucunda ise birleştirme arayüzeyinde gözle görülebilir bir kaynak hatası oluşmadığı belirlenmiştir.

Anahtar Kelimeler

bakır, titanyum, patlamalı kaynak, birleştirme arayüzeyi

Kaynakça

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