Research on Hoop Mechanical Property of Zr-Sn-Nb Alloy Cladding Tubes in Vacuum

Yan Meng; Li Shunping; Wang Pengfei; Hong Xiaofeng; Liang Bo; Dai Xun; Yin Qiwei

doi:10.13832/j.jnpe.2023.03.0127

Volume 44 Issue 3

Jun. 2023

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Article Navigation > Nuclear Power Engineering > 2023 > 44(3): 127-131

Yan Meng, Li Shunping, Wang Pengfei, Hong Xiaofeng, Liang Bo, Dai Xun, Yin Qiwei. Research on Hoop Mechanical Property of Zr-Sn-Nb Alloy Cladding Tubes in Vacuum[J]. Nuclear Power Engineering, 2023, 44(3): 127-131. doi: 10.13832/j.jnpe.2023.03.0127

Citation:

Yan Meng, Li Shunping, Wang Pengfei, Hong Xiaofeng, Liang Bo, Dai Xun, Yin Qiwei. Research on Hoop Mechanical Property of Zr-Sn-Nb Alloy Cladding Tubes in Vacuum[J]. Nuclear Power Engineering, 2023, 44(3): 127-131. doi: 10.13832/j.jnpe.2023.03.0127

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Research on Hoop Mechanical Property of Zr-Sn-Nb Alloy Cladding Tubes in Vacuum

doi: 10.13832/j.jnpe.2023.03.0127

1.
Nuclear Power Institute of China, Chengdu, 610213, China
2.
School of Materials Science and Engineering, Southwest Jiaotong University, Chengdu, 610031, China

Received Date: 2022-06-20
Rev Recd Date: 2023-03-30
Publish Date: 2023-06-15

Abstract

Abstract

At present, there is no reference standard for hoop tensile testing of small-diameter tubes and there is also no uniform research method for hoop tensile testing of zirconium alloy cladding tubes in the worldwide research field. As to home-made Zr-Sn-Nb alloy cladding tubes, there is no data in hoop mechanical property. In this paper, the hoop tensile mechanical properties of Zr-Sn-Nb alloy cladding tubes in vacuum were obtained by using the hoop specimen with a gauge section. The results show that hoop tensile strengths and elongations dropped with temperature rise from room temperature to 600℃, but there is an abnormal phenomenon with flat stage in strength at 300-400℃ due to the influence of the dynamic strain aging, the hoop tensile strengths are lower than the axial tensile strengths at the same temperature in vacuum, and the gap widened as the temperature increased; the hoop tensile curve at 550℃ and 600℃ jitters wavelike due to the influence of dynamic recrystallization; the fracture characteristics vary significantly at different temperatures, indicating that the hoop tensile fracture mode depended on the temperature heavily.
- Zr-Sn-Nb alloy,
- Hoop tensile in vacuum,
- Dynamic stain aging

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References(11)

References

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