Microstructure and phase constitution in the bonding zone of explosively welded tantalum and stainless steel sheets

Paul, H.; Miszczyk, M.; Chulist, R.; Prażmowski, M.; Morgiel, J.; Gałka, A.; Faryna, M.; Brisset, François

doi:10.1016/j.matdes.2018.05.014

Cited by 68 publications

(50 citation statements)

References 31 publications

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“…This general observation is typical and was found for other explosively welded metal compositions. [23][24][25][26]37,49] The internal microstructure of the solidified melt zones is composed of a mixture of the amorphous areas, small equiaxed grains (the diameter of these grains ranged from 0.1 to 1.0 lm), and small columnar grains ( Figure 5). The majority of grains resemble small dendrites with clearly developed cores and arms.…”

Section: B Large Melt Zone Formationmentioning

confidence: 99%

“…However, inducing intense recovery and recrystallization can decrease the microhardness in layers situated directly at the large melt zones, since the stored energy is the driving force for recrystallization. [25] This, in turn, leads to material softening. The drop in microhardness in layers of the parent plates near the solidified melt zones was clearly observed in Cu/Al, [23] Zr/carbon steel, [24] Ta/stainless steel, [25] and Ti/carbon or stainless steel [52] clad.…”

Section: Mechanical Testingmentioning

confidence: 99%

“…[22] Therefore, during solidification, the melt metals exhibit a strong tendency to form brittle crystalline, [23] quasi-crystalline, [22] nano-grained, or amorphous phases. [22,[24][25][26] Simultaneously, the interfacial layers of bonded metals undergo severe plastic deformation forming nano-grained structures. [22][23][24][25][26][27] It was found that wavy interfaces with a limited quantity of melt zones produce better mechanical properties in contrast to flat melt bonds.…”

Section: Introductionmentioning

confidence: 99%

“…[22,[24][25][26] Simultaneously, the interfacial layers of bonded metals undergo severe plastic deformation forming nano-grained structures. [22][23][24][25][26][27] It was found that wavy interfaces with a limited quantity of melt zones produce better mechanical properties in contrast to flat melt bonds. [20] However, too much waviness [28,29] and too many melt zones which form a semi-continuous interlayer can exert a detrimental effect on the performance of the bimetal.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

The Effect of Interface Morphology on the Electro-Mechanical Properties of Ti/Cu Clad Composites Produced by Explosive Welding

Paul

Skuza

Chulist

et al. 2019

Metall Mater Trans A

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he effect of interfacial microstructure on the electro-mechanical properties of explosively welded titanium and copper plates is discussed. Mechanical testing proved that using detonation velocities ranging from 2000 to 3000 m s À1 and stand-off distances from 1.5 to 9.0 mm, joints that satisfy the strength criteria for a good quality clad were produced. Scanning electron microscopy images show that all interfaces exhibit a wave character. It was noticed that as the stand-off distances and detonation velocities increase, the amplitude and period of the waves, as well as the quantity of the melt zones, increase as well. Also, as the interface waviness and volume fraction of the melt zones increase, the resistivity increases substantially. The experimental data demonstrate that the bonding between both metals is always achieved by surface melting of several tenths of a nanometer, which can be detected only by transmission electron microscopy. Most of the phases that form within the melt zones do not appear in the equilibrium phase diagram and show an amorphous/nano-grained structure. Only a very small amount of equilibrium phases such as CuTi 3 , Cu 3 Ti, Cu 4 Ti 3 was revealed employing synchrotron X-ray diffraction.

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Section: B Large Melt Zone Formationmentioning

confidence: 99%

Section: Mechanical Testingmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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The Effect of Interface Morphology on the Electro-Mechanical Properties of Ti/Cu Clad Composites Produced by Explosive Welding

Paul

Skuza

Chulist

et al. 2019

Metall Mater Trans A

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“…The amplitude and the period of waves, as observed in Figure a, are equaled to ∼30 μm and ∼160 μm, respectively. The wave‐type morphology is associated with a process reflecting its turbulent flow . It can be also seen from Fig.8a that the waves were asymmetric.…”

Section: Resultsmentioning

confidence: 71%

Application of Colloid Water Covering on Explosive Welding of AA1060 Foil to Q235 Steel Plate

Yang

Shen

et al. 2019

Propellants Explo Pyrotec

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To make industrial explosives suitable for explosive welding of metal foils, colloid water was used as a covering of explosives. The effect of the colloidal water thickness on the critical thickness of the explosives was investigated, and then AA1060 foil and Q235 steel plate were bonded using this method. Additionally, the bonding properties of the clad plate were studied through mechanical performance tests and microstructure observations. The results show that the colloid water can significantly reduce the consumption of explosives and avoid excess energy in foil weld, due to the low critical thickness of explosives in this condition. The AA1060/Q235 composite sheet shows an excellent bonding quality without macroscopic defects except for the boundary area, and no separation, tearing or fracture was observed under bending load. The microstructure results show a wave‐type metallurgical bonding between the two materials, with some melting zones in the crest. In addition, a hardening phenomenon near the AA1060/Q235 interface was revealed by microhardness and fractography studies on the tensile specimen.

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Interfacial Reactions in the Bonding Zones of Explosively Welded Tantalum to Stainless Steel Sheets

et al. 2021

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The microstructure of the interfacial layers of explosively welded Ta/stainless steel (SS) and Ta/Cu/SS composites is investigated by X-ray synchrotron radiation, scanning (SEM), and transmission (TEM) electron microscopies. SEM analyses show that all interfaces between joined sheets undergo wave-shaped deformation with the solidified melt regions situated preferentially in the wave vortexes and at the wave crests. These reaction regions show a nonuniform distribution of phases in terms of chemical composition with elements belonging to both neighboring sheets. According to TEM analyses and synchrotron X-ray measurements, the solidified melt regions between Ta and SS predominantly consist of brittle, amorphous, or nanocrystalline phases that are not observed in equilibrium phase diagrams. The microstructure of the solidified melt near the Ta/Cu interface is dominated by Cu and Ta nanoparticles and small dendrites, typically less than 100 nm in diameter, whereas nanosized crystalline phases with complex chemical compositions are identified near the Cu/SS interface.

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Microstructure and phase constitution in the bonding zone of explosively welded tantalum and stainless steel sheets

Cited by 68 publications

References 31 publications

The Effect of Interface Morphology on the Electro-Mechanical Properties of Ti/Cu Clad Composites Produced by Explosive Welding

The Effect of Interface Morphology on the Electro-Mechanical Properties of Ti/Cu Clad Composites Produced by Explosive Welding

Application of Colloid Water Covering on Explosive Welding of AA1060 Foil to Q235 Steel Plate

Interfacial Reactions in the Bonding Zones of Explosively Welded Tantalum to Stainless Steel Sheets

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