Microheterogeneous Structure of Local Melted Zones in the Process of Explosive Welding

Greenberg, B. A.; Иванов, М. А.; Inozemtsev, A. V.; Пацелов, А. М.; Pushkin, M. S.; Vlasova, A. M.

doi:10.1007/s11661-015-2968-3

Cited by 29 publications

(6 citation statements)

References 15 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Such an effect is shown in the works of Greenberg et al [47,48] and is known as granulating fragmentation (GF). GF was observed in both wavy and planar interfaces.…”

Section: A Microstructurementioning

confidence: 95%

Microstructural and Phase Composition Differences Across the Interfaces in Al/Ti/Al Explosively Welded Clads

Fronczek

Chulist

Lityńska‐Dobrzyńska

et al. 2017

Metall Mater Trans A

View full text Add to dashboard Cite

The microstructure and phase composition of Al/Ti/Al interfaces with respect to their localization were investigated. An aluminum-flyer plate exhibited finer grains located close to the upper interface than those present within the aluminum-base plate. The same tendency, but with a higher number of twins, was observed for titanium. Good quality bonding with a wavy shape and four intermetallic phases, namely, TiAl 3 , TiAl, TiAl 2 , and Ti 3 Al, was only obtained at the interface closer to the explosive material. The other interface was planar with three intermetallic compounds, excluding the metastable TiAl 2 phase. As a result of a 100-hour annealing at 903 K (630°C), an Al/TiAl 3 /Ti/TiAl 3 /Al sandwich was manufactured, formed with single crystalline Al layers. A substantial difference between the intermetallic layer thicknesses was measured, with 235.3 and 167.4 lm obtained for the layers corresponding to the upper and lower interfaces, respectively. An examination by transmission electron microscopy of a thin foil taken from the interface area after a 1-hour annealing at 825 K (552°C) showed a mixture of randomly located TiAl 3 grains within the aluminum. Finally, the hardness results were correlated with the microstructural changes across the samples.

show abstract

“…Such an effect is shown in the works of Greenberg et al [47,48] and is known as granulating fragmentation (GF). GF was observed in both wavy and planar interfaces.…”

Section: A Microstructurementioning

confidence: 95%

Microstructural and Phase Composition Differences Across the Interfaces in Al/Ti/Al Explosively Welded Clads

Fronczek

Chulist

Lityńska‐Dobrzyńska

et al. 2017

Metall Mater Trans A

View full text Add to dashboard Cite

show abstract

“…Explosive welding is frequently regarded as solid-state joining [8]. However, numerous studies have reported the appearance of local molten areas at the interface between the welded materials (see, for instance, [9][10][11][12]). The mixing of dissimilar alloys in the molten areas may lead to the formation of intermetallic layers that influence the properties of the welded joints significantly.…”

Section: Introductionmentioning

confidence: 99%

Explosively welded multilayer Ni–Al composites

et al. 2015

View full text Add to dashboard Cite

“…Using the copper-tantalum weld joint, the reason for mixing of immiscible suspensions upon explosion welding was elucidated in [6]. Other results of the copper-tantalum weld joint structure examination are provided in [7].…”

Section: Chemical Reactormentioning

confidence: 99%

Microstructures upon explosion welding and processes which prevent joining of materials

Greenberg¹,

Иванов²,

Кузьмин³

et al. 2018

LoM

View full text Add to dashboard Cite

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.

show abstract

Microheterogeneous Structure of Local Melted Zones in the Process of Explosive Welding

Cited by 29 publications

References 15 publications

Microstructural and Phase Composition Differences Across the Interfaces in Al/Ti/Al Explosively Welded Clads

Microstructural and Phase Composition Differences Across the Interfaces in Al/Ti/Al Explosively Welded Clads

Explosively welded multilayer Ni–Al composites

Microstructures upon explosion welding and processes which prevent joining of materials

Contact Info

Product

Resources

About