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Tensile and Fracture Behaviour of Zr-4 Alloy Processed Through Swaging
, Agarwal Vikas, I. Vishnu Narayanan K., Kumar Arora Umesh, Srivastava Dinesh, Gaurav Singh, Abhishek Tiwari
Published in Springer Science and Business Media LLC
Volume: 73
Issue: 4
Pages: 955 - 965

Production of Zirconium alloys for nuclear power reactor comprises of a number of steps during swaging and each step influences microstructural and mechanical properties of the finished product. The Zircaloy-4 was subjected to cold swaging to reduce its cross section gradually from 23 to 16 mm diameter via several passes of swaging followed by intermediate vacuum annealing at 732 °C for 3 h. EBSD was carried out to study the influence of twinning in the Zr-4 alloy. Twinning is observed in swaged ({112¯2¯2}〈112¯3¯2¯3¯〉) and annealed ({112¯2¯1}〈112¯6¯2¯6¯〉) samples. TEM was done to substantiate the role of dislocation density. It is observed that several swaging and annealing treatments have improved tensile strength and fracture toughness of the Zr-4 alloy.

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PublisherData powered by TypesetSpringer Science and Business Media LLC
Open AccessNo