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Basic modelling of creep rupture in austenitic stainless steels
Theoretical and Applied Fracture Mechanics, 2017 Creep rupture can happen in two ways, brittle and ductile creep rupture. Brittle creep rupture of austenitic stainless steels proceeds with the nucleation, growth and coalescence of grain boundary cavities.
Junjing He, Rolf Sandström
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Creep and stress-rupture of high strength zirconium alloys
Canadian Metallurgical Quarterly, 1972Zirconium-based alloys with small additions of tin, molybdenum, niobium and aluminum are being developed as candidate materials for high-strength pressure tubes in advanced CANDU reactors.
E.F. Ibrahim +2 more
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Coupled modeling of steady-state creep rate and creep rupture strength for metals
Strength of Materials, 2008New methods of coupled mathematical modeling of steady-state creep rate and creep rupture strength of metals in tension have been devised. Two nonlinear fractional power functions with four material constants are used as basic dependences of the steady-state creep and creep rupture life on stress.
N. A. Veklich +2 more
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Hot strength of creep resistant ferritic steels and relationship to creep rupture data
Materials Science and Technology, 2007Experimental data on the tensile strength of ferritic steels designed for prolonged service at elevated temperatures have been assessed as a function of many variables, including the testing temperature. The resulting model has been combined with other data on the intrinsic strength of pure ferritic iron and substitutional solute strengthening to show
R. C. Dimitriu, H. K. D. H. Bhadeshia
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Strength of Materials, 2008
The conventional model of Kachanov-Rabotnov-Hayhurst continuum fracture mechanics is extended to cover the case of variable temperature and strain hardening. The creep and damage rates are assumed to depend on temperature. The resulting model for nonisothermal creep and damageability is implemented in a finite-element code of the general-purpose ...
Lvov, G. I. +2 more
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The conventional model of Kachanov-Rabotnov-Hayhurst continuum fracture mechanics is extended to cover the case of variable temperature and strain hardening. The creep and damage rates are assumed to depend on temperature. The resulting model for nonisothermal creep and damageability is implemented in a finite-element code of the general-purpose ...
Lvov, G. I. +2 more
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Sub-Scale Testing for Strength and Creep-Rupture of Polymers
Journal of Testing and Evaluation, 2015Abstract In the present research, a sub-scale specimen geometry was proposed for the determination of the tensile strength of polymers. Tensile strength of an aerospace epoxy (8552) was measured at various temperatures using the proposed testing approach and the measured data were compared to data measured using standard-size specimens ...
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Creep Rupture Strength and Ductility of Grade 92 Steel
Advances in Materials Technology for Power PlantsAbstract This study aims to elucidate the chemical compositions and microstructural factors that affect longterm creep rupture strength and creep rupture ductility using multiple heats of Gr.92 steel. Evaluating the reduction behavior in long-term creep rupture strength, we propose a relative creep rupture strength value, which is ...
Nobuyoshi Komai +4 more
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Creep-Rupture Strength and High-Temperature Creep of Nickel-Chromium-Based Alloy [PDF]
, 2010 The characteristics of high-temperature creep and creep-rupture strength of nickel-chromium- based heat-resistant alloy have been studied with the test duration 10 hrs in the temperature range from 800 to 1100 °C.
Mamuzić, Ilija, Bukhanovskii, V. V.
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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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Microstructure and Creep Rupture Strength of Welded Joints in the Steel P91
Volume 9: Eighth International Conference on Creep and Fatigue at Elevated Temperatures, 2007The aim of the paper is to explain the reason why the creep rupture on welded joints at high temperatures is often observed in the heat affected zone (HAZ), especially in the so called intercritical zone (IC-HAZ). The creep rupture strength (CRS) of cross-weld joints is usually about 20 to 30% lower than that of the base material in the case of the ...
Jaroslav Purmensky +4 more
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