Defining a negligible creep temperature curve for Gr. 91 steel

Holmström, Stefan

doi:10.1016/j.ijpvp.2016.07.004

Cited by 4 publications

(1 citation statement)

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“…The higher applied stress, higher temperature or enhanced stress concentrations and stress-free isothermal ageing to simulate microstructural instabilities under longterm service conditions are used to accelerate the creep process [1]. The phenomenological models are based on fitting some functions to measured creep curves, deriving the dependencies of their parameters on applied stress and testing temperature, and extrapolating these dependencies [2,3]. Simple phenomenological models are useful for engineering practice, but their limitations and reliability must be realized, mainly when applied on new materials.…”

Section: Introductionmentioning

confidence: 99%

Interrelationship between Creep Deformation and Damage for Advanced Creep-Resistant Steels

Sklenička

Kuchařová

Kvapilová

et al. 2018

KEM

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The components used in power plants generally operate at elevated and/or high temperature and are subjected to internal pressure. Under such conditions creep is of a great concern and there is an urgent demand for methods which can be used to predict the creep life. In this work, using our earlier published creep data for advanced creep-resistant T23 and P92 steels, the interrelationship between creep deformation and damage have been analysed by linking them to the identified acting mechanisms, in terms of empirical formulas for the fracture time assessment. The validity and the applicability of various formulas are examined with the objective to gain insight into the creep deformation and fracture behaviour of the steels under investigation.

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Section: Introductionmentioning

confidence: 99%