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Microstructural and Micro-Analysis of Zirconium: Stainless Steel alloys for Radioactive Metallic Waste Management

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Abstract

The present study aims to explore ‘melting’ as a method for environment friendly management of radioactive metallic waste, viz. clad (Zirconium alloy), structural materials (stainless steel, etc.), with a view to reduce the volume of the radioactive metallic waste and develop a waste form with acceptable product durability parameters. Zircaloy–Stainless steel alloy (in w/w 85:15), in the form of monolithic waste form, was prepared in kilogram scale using vacuum induction melting furnace and the base alloy was pourable in between 1200 and 1300 °C depending on the starting material compositions and soaking time given. The microstructure of the as-cast alloy shows variations in structure spatially, but overall the matrix is dominated by Zr3Fe with α-Zr, Zr2(Fe,Cr), Zr(Fe,Cr), Zr(Fe,Cr)2 randomly distributed. Volume reduction factor (charge-to-product volume ratio) was found to be close to 10 in the present case.

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Acknowledgements

Authors are grateful to the Editors of this issue to kindly consider this paper. The study was sponsored by Bhabha Atomic Research Centre, Department of Atomic Energy, Government of India.

Funding

Department of Atomic Energy, Government of India, Development of New Alloys (XII-N-R&D-19), Pranesh Sengupta.

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Authors and Affiliations

  1. Materials Science Division, Bhabha Atomic Research Centre, Mumbai, 400 085, India

    Pranesh Sengupta, Voona Srikanth & Raghavendra Tewari

  2. Homi Bhabha National Institute, Mumbai, 400 094, India

    Pranesh Sengupta & Raghavendra Tewari

  3. Uranium Extraction Division, Bhabha Atomic Research Centre, Mumbai, 400 085, India

    Raj Kumar & Sonal Gupta

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  1. Pranesh Sengupta
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  2. Raj Kumar
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  3. Sonal Gupta
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  4. Voona Srikanth
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  5. Raghavendra Tewari
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Correspondence to Pranesh Sengupta.

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Sengupta, P., Kumar, R., Gupta, S. et al. Microstructural and Micro-Analysis of Zirconium: Stainless Steel alloys for Radioactive Metallic Waste Management. Trans Indian Inst Met 75, 1043–1050 (2022). https://doi.org/10.1007/s12666-022-02553-1

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  • DOI: https://doi.org/10.1007/s12666-022-02553-1

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