Creep crack growth predictions in 316H steel over a wide range of stresses and temperatures

A. Mehmanparast, C. M. Davies, K. M. Nikbin, G. A. Webster

Research output: Chapter in Book/Report/Conference proceedingConference contribution book

1 Citation (Scopus)

Abstract

The prediction of the creep crack growth (CCG) behaviour in engineering materials is of great importance in the life assessment of power plant components. The conventional technique to predict CCG is to employ uniaxial creep properties and appropriate damage models in finite element (FE) simulations or analytical CCG prediction models. Uniaxial creep trends for Type 316H SS have been recently estimated for a wide range of stresses and temperatures in [1] and FE CCG predictions have been made at 550 °C and validated through comparison with the experimental data. In this paper, FE CCG predictions using the developed uniaxial creep trends for a wide range of stresses and temperatures are presented and the results are compared with the predicted CCG trend at 550 °C and also with the analytical constant creep ductility NSW CCG prediction models. The results from FE predictions are discussed in terms of the temperature effects on the creep deformation and crack growth behaviour of components operating at elevated temperatures.

Original languageEnglish
Title of host publicationMaterials and Fabrication
Number of pages7
ISBN (Electronic)9780791846032
DOIs
Publication statusPublished - 18 Nov 2014
EventASME 2014 Pressure Vessels and Piping Conference, PVP 2014 - Anaheim, United States
Duration: 20 Jul 201424 Jul 2014

Publication series

NameAmerican Society of Mechanical Engineers, Pressure Vessels and Piping Division (Publication) PVP
Volume6A
ISSN (Print)0277-027X

Conference

ConferenceASME 2014 Pressure Vessels and Piping Conference, PVP 2014
Country/TerritoryUnited States
CityAnaheim
Period20/07/1424/07/14

Keywords

  • creep
  • fracture
  • steel
  • stress
  • finite element method
  • simulation
  • ductility
  • creep crack growth (CCG)

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