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Creep rupture life prediction based on creep dissipation energy analysis
Transactions of the Indian Institute of Metals, 2010Structural materials used in sodium cooled fast reactors (SFRs) shall have good high temperature low cycle fatigue and creep properties, adequate weldability to fabricate large size components and shall be compatable with the liquid sodium environment in service. Austenitic stainless steels have been the natural choice for structural components of SFRs
Vela Murali +6 more
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On the creep rupture life prediction
Journal of Materials Science, 1998Combined effects of stress, σA, and fracture cavitation on the creep rupture life, tR, have been studied in conventionally cast MAR-M 002 alloy tested at 1173 K (900 °C) over a limited range of stress (σA = 200–400 MPa). It is predicted that the creep fracture cavity growth is controlled by the coupled power-law creep with the grain-boundary diffusion ...
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Assessment of creep rupture life of weldments of martensitic steels
International Journal of Materials Research (formerly Zeitschrift fuer Metallkunde), 2008Abstract Martensitic steels are of major importance for modern high efficient power plants. Their long-term creep rupture characteristics are essential for the economic and reliable design of high temperature components. However, the weldments in such components have to be considered as a potential failure area under long-term creep ...
Eberhard Roos +3 more
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Introduction of SCRI model for creep rupture life assessment
International Journal of Pressure Vessels and Piping, 2009Abstract A “service condition-creep rupture property” interference model (SCRI model for short) based on Z parameter method is proposed to predict the reliability of creep rupture life for high temperature components. The dispersibility of creep rupture property and the fluctuation of service conditions such as servicing temperature and stress are ...
Jie Zhao +4 more
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Influence of saline environment on creep rupture life of Nimonic-263 for marine turbine application
Materials Science & Engineering A: Structural Materials: Properties, Microstructure and Processing, 2013 The present paper highlights the effect of Na2so4 and NaCI salt mixture on creep rupture properties of Nimonic-263 alloy at 800 and 850 degrees C. Results revealed that for short duration tests, the rupture life is not much affected by the corrosive ...
A K Ray, N Parida, M Tamilselvi
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A model of creep rupture life under hot corrosion
High Temperature Technology, 1989AbstractCreep life is mainly determined by the growth of voids until a critical stage is reached when final failure takes place. Based on metallurgical considerations, there are many models for the growth of voids in creep. However, in many operating conditions the components are subjected to both hot corrosion and creep, which accelerate the failure ...
V. Suryanarayanan +3 more
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Stress Dependence of Degradation and Creep Rupture Life of Creep Strength Enhanced Ferritic Steels
Advances in Materials Technology for Power Plants, 2007Abstract The long-term creep strength of creep strength-enhanced ferritic steels has been overestimated due to changes in the stress dependence of creep rupture life at lower stress levels. To address this, creep rupture strength has been reassessed using a region-splitting analysis method, leading to reductions in the allowable tensile ...
K. Kimura +3 more
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An Estimator for the Influence of Service Temperature on Creep Rupture Life
Fitness for Service, Life Extension, Remediation, Repair, and Erosion/Corrosion Issues for Pressure Vessels and Components, 2004The 2001 ASME B31.1 Code (Code) has a warning to the piping designer regarding materials susceptible to creep damage. However, the Code does not prescribe a methodology to determine the accelerated life reduction for a component due to events resulting in operating temperatures in excess of the design temperature.
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Effect of oxidation on the creep rupture life of ASME T23 steel
International Journal of Pressure Vessels and Piping, 2009The creep rupture behavior and the effects of oxidation on the creep strength of ASME T23 steel have been investigated. At 625 °C and 650 °C, a greater degradation of long-term creep strength was observed than expected from conventional master curve descriptions in the literature.
Kota Sawada +3 more
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Effect of RE on Creep Rupture Life of SnAgCu Solder Joints
Materials Science Forum, 2011Creep property is one of the most important factors to affect the reliability of soldered joints. The effect of rare earth(RE) on the creep rupture life of Sn2.5Ag0.7Cu solder joints were investigated under constant temperature and stress using creep specimens with a 1mm2cross sectional area.
Yao Li Wang +4 more
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