Bonding mechanism of explosive compaction–welding sintering

Chen, Xiang; Li, Xiaojie; Wang, Xiaohong; Yan, Honghao; Li, Kebin; Xiangyu, Zeng

doi:10.1016/j.jmapro.2019.08.018

Cited by 23 publications

(7 citation statements)

References 28 publications

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“…26 For this purpose, the explosive behavior was described using the Jones-Wilkins-Lee (JWL) equation of state. 27 The JWL equation of state, which was proposed by Jones and Miller 28 and later developed by Wilkins et al, 29 was obtained empirically. The equation for pressure was expressed as follow:…”

Section: Equation Of Statesmentioning

confidence: 99%

Investigation of the explosive type on the high strain forming of OFHC copper tube

Yildiz

2021

The Journal of Strain Analysis for Engineering Design

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The paper computationally investigates the explosive forming of the oxygen-free high thermal conductivity (OFHC) copper tube subjected to five different explosives. To investigate the effect of explosive type on the formability of OFHC copper tube, commonly used explosives, including C-4, TNT, HMX, Comp-B, and PBXN, was compared by using the finite element method. To verify the developed finite element model (FEM), the explosive forming experiments were carried out by using C-4. In the simulations, Coupled-Eulerian-Lagrangian (CEL) method to model the large deformations, Jones-Wilkins-Lee (JWL) equations of state (EOS) to define the explosive properties and Johnson-Cook (J-C) strength and damage models to specify the metal’s mechanical behavior were utilized. Besides, Hillerborg’s fracture energy was calculated with the Charpy impact test results and given as input to the FEM. The results of FEM were compared and verified using the results of explosive forming tests considering the mesh density and friction coefficient. The simulations revealed that the explosive type affected both the final shape and also the strain rate of the copper tube. When the simulation results for C-4 was taken as reference, HMX and PBX-N increased the strain rate as 110%, roughly. However, Comp-B and TNT reduced the strain rate by nearly 10% and 22%, respectively. Also, the explosive type changed the final hardness of the metal. OFHC Copper had the lowest hardness (112.7 HV) when the simulations were conducted with TNT. In contrast, the highest hardness value (129.5 HV) was reached when HMX was used in the simulations. In addition, simulations put forth that Hillerborg’s fracture energy criteria could be used in the explosive simulations to predict the damage on the metals.

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Section: Equation Of Statesmentioning

confidence: 99%

Investigation of the explosive type on the high strain forming of OFHC copper tube

Yildiz

2021

The Journal of Strain Analysis for Engineering Design

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“…Explosive selection and detonation Velocity (Vd) are vital parameters which result in good weld. The bonding interface in EXW presents three morphologies: straight, wavy and melted layer [8]. The qualitative study of these morphologies shows the strength of bonding [9].…”

Section: A Welding Setupmentioning

confidence: 99%

Enhancing Corrosion Resistance in Explosive Welding

Alam¹

2019

Int. j. appl. phys. sci.

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Explosive Welding (EXW) is one of the solid-state joining techniques. A controlled explosion takes place on the surface of the flyer plate, which results in the bonding with base plate. There are basically two type of materials that can be welded together, i.e., similar and dissimilar materials. In this review paper we did a detailed study on the recent work done in this field. We also examined the micro and macro structural properties of the welded composites, briefly. Further we focused on how strong bonding enhanced corrosion resistivity in the composite formed. Detonation velocity plays an important role in the strength of bonding. From the study of all researches referenced in this paper we found that firstly, same element can behave differently in different scenario. Secondly, how bonding between multi-layer elements is depended upon welding position and detonation velocity.

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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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Bonding mechanism of explosive compaction–welding sintering

Cited by 23 publications

References 28 publications

Investigation of the explosive type on the high strain forming of OFHC copper tube

Investigation of the explosive type on the high strain forming of OFHC copper tube

Enhancing Corrosion Resistance in Explosive Welding

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

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