Research on High Temperature Mechanical Properties of Main Pipeline Materials

Li Pengzhou; Li Yilei; Yao Di; Luo Jiacheng; Sun Lei; Qiao Hongwei

doi:10.13832/j.jnpe.2022.06.0139

Volume 43 Issue 6

Dec. 2022

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Li Pengzhou, Li Yilei, Yao Di, Luo Jiacheng, Sun Lei, Qiao Hongwei. Research on High Temperature Mechanical Properties of Main Pipeline Materials[J]. Nuclear Power Engineering, 2022, 43(6): 139-145. doi: 10.13832/j.jnpe.2022.06.0139

Citation:

Li Pengzhou, Li Yilei, Yao Di, Luo Jiacheng, Sun Lei, Qiao Hongwei. Research on High Temperature Mechanical Properties of Main Pipeline Materials[J]. Nuclear Power Engineering, 2022, 43(6): 139-145. doi: 10.13832/j.jnpe.2022.06.0139

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Research on High Temperature Mechanical Properties of Main Pipeline Materials

doi: 10.13832/j.jnpe.2022.06.0139

Nuclear Power Institute of China, Chengdu, 610213, China

Received Date: 2021-12-23
Rev Recd Date: 2022-03-15
Publish Date: 2022-12-14

Abstract

Abstract

In order to provide material property parameters for leak before break (LBB) design of nuclear power plant, it is necessary to measure the mechanical properties of base metal and welding material of main pipeline at high temperature, including the high-temperature dynamic mechanical properties of materials in seismic environment. Based on universal servo material testing machine and high-speed material testing machine, the static-dynamic tensile mechanical properties, crack growth rate and static-dynamic fracture toughness of nitrogen controlled 00Cr17Ni12Mo2 stainless steel and OK Tigrod 316L welding material for main pipeline base metal of nuclear power plant at high temperature (350℃) are measured. Compared with the normal temperature mechanical properties of the main pipeline base metal and welding materials, the static-dynamic tensile mechanical properties of the two materials at 350℃ and the static-dynamic fracture toughness of OK Tigrod 316L at 350℃ have significantly decreased compared with the normal temperature, and the crack growth resistance of the two materials at 350℃ has slightly decreased compared with the normal temperature. The research results can provide experimental technology and material parameter support for LBB design of nuclear power plant pipelines.
- Main pipeline,
- Tensile mechanical property,
- Crack growth,
- Fracture toughness

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References(15)

References

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