Characterization of Bonded Zone and Evaluation of Cracking in Vacuum Brazed Zircaloy-4 and Stainless Steel-316L Joint

• Autorzy: Munis A. , Zheng Maosheng , Akhter J. I. , Ahmad M.

Identyfikatory

DOI

10.24425/amm.2019.127602

• Języki publikacji: EN

Abstrakty

EN

Brazing of two dissimilar structural materials; Zircaloy-4 and SS-316L was performed at 900°C under high vacuum conditions. The metallic glass ribbons (Zr₅₅Cu₃₀Al₁₀Ni₂Fe₃-at.%) of 30 μm thickness, were used as an interlayer. The bonded region was characterized by scanning electron microscope (SEM), energy dispersive spectroscope (EDS) and microhardness testing. The metallurgical bond formation was due to compositional changes in the molten interlayer and later on its subsequent solidification. Assessment of the bonded zone (BZ) revealed three distinct regions (Region-I, Region-II and Region-III). Diffusion transformation was observed in Region-I and Region-III which were interface with base alloys SS-316L and Zircaloy-4 respectively. However, Region-II at the middle of the BZ was composed of isothermally and athermally solidified portions. The highest values of Microhardness were observed in Region-III which was due to the presence of hard phases. Moreover, a crack parallel to BZ was observed in Region-III and was attributed to differential contraction of base alloys during cooling. Maximum shear stress acting on the BZ was calculated and correlated to the brittle phase cracking.

Słowa kluczowe

EN

bonded zone; BZ; intermetallics; vacuum brazing; interlayer; cracking

• Wydawca: Institute of Metallurgy and Materials Science of Polish Academy of Sciences ; Committee of Materials Engineering and Metallurgy of Polish Academy of Sciences
• Czasopismo: Archives of Metallurgy and Materials
• Rocznik: 2019
• Tom: Vol. 64, iss. 2
• Strony: 707--713
• Opis fizyczny: Bibliogr. 31 poz., fot., rys., tab., wzory

Twórcy

autor

Munis A.

• Northwest University, School of Chemical Engineering, Institute of Energy Transmission Technology and Application, Xi’an, 710069, China

autor

Zheng Maosheng

• Northwest University, School of Chemical Engineering, Institute of Energy Transmission Technology and Application, Xi’an, 710069, China

autor

Akhter J. I.

• PINSAT, Preston University, Islamabad, Pakistan

autor

Ahmad M.

• Physics Division, Directorate of Science, Pinstech, P. O. Nilore, Islamabad, Pakistan

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Uwagi

PL

Opracowanie rekordu w ramach umowy 509/P-DUN/2018 ze środków MNiSW przeznaczonych na działalność upowszechniającą naukę (2019).