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Fracture Characteristics of 9%Ni Steel at Low Temperature

[+] Author Affiliations
Qingren Xiong, Chunyong Huo, Shaotao Gong, Jinheng Luo, Jiming Zhang, He Li

Tubular Goods Research Institute of CNPC, Xi’an, China

Paper No. PVP2015-45203, pp. V01BT01A036; 5 pages
doi:10.1115/PVP2015-45203
From:
  • ASME 2015 Pressure Vessels and Piping Conference
  • Volume 1B: Codes and Standards
  • Boston, Massachusetts, USA, July 19–23, 2015
  • Conference Sponsors: Pressure Vessels and Piping Division
  • ISBN: 978-0-7918-5693-2
  • Copyright © 2015 by ASME

abstract

The fracture characteristics of several types of tensile specimens of 9%Ni steel at low temperature was studied, and the Notch (Crack) Sensitivity and Notch (Crack) Relative Strength decreased (increased) Ratio of notch (crack) specimen were studied, while the crack preparation method of the crack specimen was discussed. The results indicate that the Notch (Crack) Sensitivity and Notch (Crack) Relative decreased (increased) Ratio can be used to evaluate the low temperature low stress brittle fracture resistance of the material. 9%Ni steel has good brittle fracture resistance at low temperature. The crack preparation principle of the crack tensile specimen was put forward.

Copyright © 2015 by ASME

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