Transverse Strain Aging Behaviour of Uncoated Thick Walled X70 UOE Microalloyed Steel Pipes

• Author(s) / Creator(s)

  • Wiskel, J.B.
  • Ma, J.
  • Ivey, D.G.
  • Henein, H.

• Transverse tensile samples were extracted from the centreline position of three different compositions of uncoated thick walled microalloyed X70 UOE pipe at a location 180° from the weld. Aging heat treatments of 5, 15, and 25 minutes and temperatures of 175, 215, and 255°C were applied. Tensile tests were conducted on both the original pipe and on pre-strained samples. Microstructural analysis was undertaken using optical microscopy and scanning electron microscopy (SEM). The effects of a combined time and temperature aging parameter, pre-strain, microstructure and tensile work hardening behaviour on the pipe yield stress and yield to tensile strength ratio, is presented.

• Date created

  2018-01-01

• Subjects / Keywords

  • X70
  • Strain Aging

• Type of Item

  Article (Published)

• DOI

  https://doi.org/10.7939/r3-z7fx-0s75

• License

  Attribution-NonCommercial-NoDerivatives 4.0 International