The structure of molten zones in explosion welding (aluminium–tantalum, copper–titanium)

Greenberg, B. A.; Pushkin, M. S.; Пацелов, А. М.; Inozemtsev, A. V.; Иванов, М. А.; Слаутин, О. В.; Besshaposhnikov, Yu. P.

doi:10.1080/09507116.2016.1263462

Cited by 7 publications

(4 citation statements)

References 10 publications

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“…Then, under the action of the shock wave, the molten copper and steel mixed together and flowed with the wave crest, and finally converge to the vortex region where the pressure in front of the wave is lowest [1,16,19]. Greenberg et al [22,23] found the same phenomenon in aluminiumtantalum and copper-titanium explosive welding interfaces, vortex zones are formed near the cusps and valleys. Due to the low impact energy, we did not find a similar vortex zone at the lower-interface, as shown in Figure 3c.…”

Section: Resultsmentioning

confidence: 89%

“…As a resu a number of the most severely deformed copper microstructures melted in the first plac and more liquid copper was mixed with the soften or even molten iron, which can evidenced by the fact that copper occupies more volume fraction in the vortex regio Then, under the action of the shock wave, the molten copper and steel mixed together an flowed with the wave crest, and finally converge to the vortex region where the pressu in front of the wave is lowest [1,16,19]. Greenberg et al [22,23] found the same phenom non in aluminium-tantalum and copper-titanium explosive welding interfaces, vort zones are formed near the cusps and valleys. Due to the low impact energy, we did n find a similar vortex zone at the lower-interface, as shown in Figure 3c.…”

Section: Resultsmentioning

confidence: 99%

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Interfacial Microstructure and Shear Behavior of the Copper/Q235 Steel/Copper Block Fabricated by Explosive Welding

Zhao

et al. 2023

Coatings

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A copper/Q235 steel/copper composite block with excellent bonding interfaces was prepared by explosive welding which was a promising technique to fabricate laminates. The microstructure and mechanical properties of the interfaces were investigated via the tensile-shear test, optical microscope (OM), X-ray diffraction (XRD), scanning electron microscope (SEM), and electron back-scattered diffraction (EBSD). The results showed that the shear strength of the upper-interface and lower-interfaces of the welded copper/steel are higher than ~235 MPa and ~222 MPa, respectively. The specimens failed fully within the copper and not at the bonding interface. It was attributed to: (1) no cavities and cracks at the interface; (2) the interface formed a metallurgical bonding including numerous ultra-fine grains (UFGs) which can significantly improve the plastic deformation coordination at the interface and inhibit the generation of micro-cracks.

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Section: Resultsmentioning

confidence: 89%

Section: Resultsmentioning

confidence: 99%

Interfacial Microstructure and Shear Behavior of the Copper/Q235 Steel/Copper Block Fabricated by Explosive Welding

Zhao

et al. 2023

Coatings

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“…Due to the mutual solubility of the base elements, the formation of intermetallics upon explosive welding is possible. The authors of [16] studied joints of metals that had sufficiently high mutual solubility. The formation of intermetallics upon explosive welding of copper and titanium was studied in [17].…”

Section: Intermetallics Formationmentioning

confidence: 99%

Microstructures upon explosion welding and processes which prevent joining of materials

Greenberg¹,

Иванов²,

Кузьмин³

et al. 2018

LoM

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The present paper examines features of interface structure and analyzes possible risk zones for two to a certain degree alternative objects manufactured from composites produced by explosive welding. One of those is a chemical reactor vessel; the other is a petrochemical reactor vessel (a coke drum). The engineering of a chemical reactor vessel is an example of a successful implementation of explosive welding. The analysis of the chemical reactor wall structure containing a coppertantalum welded joint revealed the reasons for its stability that provides reactor's extended service life in a harsh environment. However, a risk zone can emerge due to the quasi-wave nature of the interface. On the contrary, factors that shorten the service life were found for the petrochemical reactor. The contact zone of the plates for the shell of the petrochemical reactor (the coke drum) produced by explosive welding and made of 08Cr13 and 12CrMo steel consists of five layers. The segregation of carbon provokes the eutectoid decomposition that causes formation of colonies of rod-shaped carbides. As a result, two risk zones can be observed: the melted zone and the segregation zone. Using the copper-titanium joints as examples, the effect of intermetallic reactions on the strength of a welded joint was studied. Disordered and unfaceted clusters were observed to turn into intermetallic particles and then into agglomerates. Attention is drawn to the fact that the variety of operating modes and conditions makes the formation of intermetallic compound really hazardous.

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“…Gelişen ve değişen teknolojik gereksinimler insanlığı her açıdan daha üstün malzemeler üretme arayışına yönlendirmiş, bunun sonucu olarak farklı üretim metotları ortaya çıkarmıştır. Malzemelerin avantajlı özelliklerini bir araya getirmek amacıyla üretilen bimetalik ve çok katmanlı kompozit malzemeler günümüzde sıkça kullanılmaktadır [1,2]. Üretilen malzemeler sertlik, aşınma, korozyon direnci, iletkenlik, termal genleşme ve diğer mekanik ve fiziksel özellikleri bakımından saf malzemelerden daha üstündürler [2].…”

Section: Gi̇ri̇ş (Introduction)unclassified

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

Yıldırım¹,

Kaya

2024

Politeknik Dergisi

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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.

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The structure of molten zones in explosion welding (aluminium–tantalum, copper–titanium)

Cited by 7 publications

References 10 publications

Interfacial Microstructure and Shear Behavior of the Copper/Q235 Steel/Copper Block Fabricated by Explosive Welding

Interfacial Microstructure and Shear Behavior of the Copper/Q235 Steel/Copper Block Fabricated by Explosive Welding

Microstructures upon explosion welding and processes which prevent joining of materials

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

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