Microstructure and Corrosion Aspects of Dissimilar Joints of Zircaloy-4 and 304L Stainless Steel

Zaid, B.; Taouinet, M.; Souami, N.; Lebaili, S.

doi:10.1007/s11665-012-0319-8

Cited by 16 publications

(10 citation statements)

References 17 publications

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“…Its chemical compositions are as follows: Zr ¼ 38.19 at%, Cr ¼ 29.11 at%, and Fe ¼ 32.70 at% ( Table 2). This composition corresponds to the compound Zr(Fe, Cr) 2 , which was also mentioned in other works [4,18,19,22].…”

Section: Phases Nature Formed At the Interfacesupporting

confidence: 76%

“…3 and Fig. 4) and indicated too in our previous work [18], is not mentioned by the authors cited. It could be confused with one of the adjacent areas.…”

Section: Morphology Of the Zircaloy-4/304l Ss Interfacementioning

confidence: 48%

“…It is inserted into a TV3-Adamel vertical furnace, for solid state diffusion bonding treatments. This device has already been tested in our previous studies [17,18].…”

Section: Diffusion Bonding Devicementioning

confidence: 99%

“…For some authors, the mixture gives Fe 2 Zr þ Zr 2 (Fe,Ni) for others, the mixture gives two distinct compounds which admit some mutual solubilities of Fe and Ni and become: Zr 2 (Ni 1-x Fe x ) and Zr 2 (Fe 1-x Ni x ). These compounds Zr2Fe and Zr2Ni are miscible with each other and conduct to the formation of an intermetallic phase of the type Zr2 (Fe, Ni) [18,26].…”

Section: Phases Nature Formed At the Interfacementioning

confidence: 99%

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Diffusion Bonding Between Zircaloy-4 and 304L Stainless Steel in the Presence of a Eutectic

Taouinet¹,

Kamel²,

Lebaili³

2013

Materials and Manufacturing Processes

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Diffusion bonding in the solid state between the zirconium alloy (Zircaloy-4) and AISI 304L stainless steel (304L SS) was studied at a temperature of 1,050 C under a dynamic pressure in a controlled atmosphere. We discussed the morphology of the interface formed by determining the distribution of the various chemical constituents as well as the location and the identification of the different phases nature formed through due to chemical exchange reactions that occurred by diffusion through the interface. Observations and chemical analysis were performed by environmental scanning electron microscope (ESEM), energy dispersive X-ray spectroscopy (EDS), and X-ray diffraction (XRD). The junction is composed of three distinct zones formed of a solid solution (FeCr)a rich in Cr as a homogeneous edging from steel side. The type phase Zr(Fe,Cr) 2 occupies the Zone II and phase Zr 2 (Fe,Ni) Zone III between them settled the eutectic Zr a -Zr(Fe,Cr) 2 . . The observations and analysis of the fracture surfaces obtained by impact testing showed a morphology of a brittle fracture by cleavage which is located at the interface. The microhardness filiation at the interface of both materials diffusion bonded is very heterogeneous.

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Section: Phases Nature Formed At the Interfacesupporting

confidence: 76%

“…3 and Fig. 4) and indicated too in our previous work [18], is not mentioned by the authors cited. It could be confused with one of the adjacent areas.…”

Section: Morphology Of the Zircaloy-4/304l Ss Interfacementioning

confidence: 48%

“…It is inserted into a TV3-Adamel vertical furnace, for solid state diffusion bonding treatments. This device has already been tested in our previous studies [17,18].…”

Section: Diffusion Bonding Devicementioning

confidence: 99%

Section: Phases Nature Formed At the Interfacementioning

confidence: 99%

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Diffusion Bonding Between Zircaloy-4 and 304L Stainless Steel in the Presence of a Eutectic

Taouinet¹,

Kamel²,

Lebaili³

2013

Materials and Manufacturing Processes

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“…Studies on the direct diffusion bond between SS and Zy-4 show complex interfaces formed of layers of variable thicknesses (from tens to hundreds of micrometers). This is associated with the coexistence of a multitude of different types of phases: α-(Fe-Cr), α-Zr solid solution Zr2(Fe,Ni), Zr(Cr,Fe)2, ZrFe2 and Zr2Ni intermetallic compounds [14][15][16][17][18][19][20].The formation of these phases, their morphology, dispersions and localization at the interface depend enormously on the experimental conditions of the realization of the junction, which are: Temperature and isothermal holding time and pressures.…”

Section: Introductionmentioning

confidence: 99%

Microstructural Aspects of the Zircaloy-4/SS-304L Interface Obtained by Diffusion Bonding Technique

Lebaili

Taouinet²,

Lebaili

2019

SSP

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A dissimilar metal joining method based on diffusion bonding was developed to join 304L stainless steel (SS) and Zr alloy (Zy-4). This was done at 820°C and 950°C under argon and dynamic pressure for 45 minutes.The metallurgical structure of the interface and the evolution of its texture during the treatment were studied by evaluating the distribution of the constituent chemical elements and by identifying the crystalline phases formed. Chemical exchanges through the interface are favored by diffusion phenomena. The junction was characterized by: microscopic observations and chemical analyzes (ESEM-EDS, EPMA), X-RD and mechanical tests (HV and Shear test). Treatment at 820°C does not form a bond because the reciprocal solubilities of the chemical elements of SS and Zy-4 are very low. The junction obtained at 950°C has a reaction zone (RZ) formed at the SS/Zy-4 interface, composed of three layers. The first layer (LI = α-(Fe,Cr) on the SS side and the third layer (LIII=Zr2(Fe, Ni)) on the Zy-4 side are single-phased. The middle layer LII is biphasic (LII= e-Zr(Cr,Fe)2+Zr2(Fe, Ni)). The maximum hardness measured in the RZ is ~ 1120 HV. It is due to the formation of the intermetallic compounds of type e-Zr(Cr,Fe)2 in LII. Examination of fracture facies obtained from the joints reveals that the fracture is localized in the LIII layer and it is fragile in nature of the trans-granular type.

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Metallurgical evolution and interfacial interactions between 304L stainless steel and Zy-4 alloy dissimilar junction during isothermal holding at high temperature

Soualili

Lebaili

Taouinet³

et al. 2022

Int J Adv Manuf Technol

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Microstructure and Corrosion Aspects of Dissimilar Joints of Zircaloy-4 and 304L Stainless Steel

Cited by 16 publications

References 17 publications

Diffusion Bonding Between Zircaloy-4 and 304L Stainless Steel in the Presence of a Eutectic

Diffusion Bonding Between Zircaloy-4 and 304L Stainless Steel in the Presence of a Eutectic

Microstructural Aspects of the Zircaloy-4/SS-304L Interface Obtained by Diffusion Bonding Technique

Metallurgical evolution and interfacial interactions between 304L stainless steel and Zy-4 alloy dissimilar junction during isothermal holding at high temperature

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