Creep and Creep-fatigue Behaviour of 316 Stainless Steel

Holmström, Stefan; Pohja, Rami; Nurmela, Asta; Moilanen, Pekka; Auerkari, Pertti

doi:10.1016/j.proeng.2013.03.236

Cited by 21 publications

(9 citation statements)

References 6 publications

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“…Holmström et al [7] revealed crack growth properties of 316 steel under creep and creep-fatigue conditions, respectively. Hongqin Yang et al [8] used a factor reflecting the degree of the creep-fatigue interaction to model the creep-fatigue crack growth rate.…”

Section: Introductionmentioning

confidence: 99%

Predicting failure modes in creep and creep-fatigue crack growth using a random grain/grain boundary idealised microstructure meshing system

Zhao

Nikbin

2017

Materials Science and Engineering: A

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An idealised microstructure mesh model combined with a novel creep and creepfatigue damage accumulation model was employed to simulate crack growth behaviour under creep/fatigue conditions for a modified 9Cr-1Mo steel. The influence of microstructures on the crack growth behaviour was studied using a random grains separated by idealised grain boundaries. For accurately representing the damage accumulation in creep-fatigue regime, a non-linear damage model was employed. In this case, creep damage was determined by multiaxial ductility exhaustion approach and fatigue damage was reliant on maximum stress and plastic range ahead of crack tip per loading cycle. When creep dominated, cracks mainly propagated along grain boundaries in steady crack growth stage. As an exception, the crack growth in the tertiary crack growth stage gradually changed from intergranular to mixed model and finally transgranular fracture. In contrast, in creep-fatigue regime, the crack growth behaviour was greatly reliant on the dwell time. For short duration period, the crack mainly propagated in a transgranular manner. But as the dwell time increased to greater than 600s, the creep intergranular fracture dominated once again. Furthermore, the grain size gradient had little influence on the crack growth model and only affected the fracture life in creep and creep-fatigue regimes.

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Section: Introductionmentioning

confidence: 99%

Predicting failure modes in creep and creep-fatigue crack growth using a random grain/grain boundary idealised microstructure meshing system

Zhao

Nikbin

2017

Materials Science and Engineering: A

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“…The life of nuclear power plants has been a major issue because it strongly relates to safety and economy [1]. Stainless steel 316 is widely used for the making of components, such as turbine blades and piping, because of its excellent corrosion resistance.…”

Section: Introductionmentioning

confidence: 99%

The Unified Creep-Fatigue Equation for Stainless Steel 316

Liú

Pons

Wong

2016

Metals

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Background-The creep-fatigue properties of stainless steel 316 are of interest because of the wide use of this material in demanding service environments, such as the nuclear industry. Need-A number of models exist to describe creep-fatigue behaviours, but they are limited by the need to obtain specialized coefficients from a large number of experiments, which are time-consuming and expensive. Also, they do not generalise to other situations of temperature and frequency. There is a need for improved formulations for creep-fatigue, with coefficients that determinable directly from the existing and simple creep-fatigue tests and creep rupture tests. Outcomes-A unified creep-fatigue equation is proposed, based on an extension of the Coffin-Manson equation, to introduce dependencies on temperature and frequency. The equation may be formulated for strain as ε p = C 0 c T, t, ε p N −β 0 , or as a power-law ε p = C 0 c (T, t) N −β 0 b(T,t) . These were then validated against existing experimental data. The equations provide an excellent fit to data (r 2 = 0.97 or better). Originality-This work develops a novel formulation for creep-fatigue that accommodates temperature and frequency. The coefficients can be obtained with minimum experimental effort, being based on standard rather than specialized tests.

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“…Results showed again the detrimental effect of increasing the inner pressure for the fatigue life, but a negligible effect of the outer pressure. New creep models for 316L were developed and extended to creep‐fatigue to estimate fatigue life; however, very conservative results were returned . The multiaxial behaviour of 316L stainless steel was also investigated with different critical plane models under strain control .…”

Section: Introductionmentioning

confidence: 99%

“…New creep models for 316L were developed and extended to creep-fatigue to estimate fatigue life; however, very conservative results were returned. 18 The multiaxial behaviour of 316L stainless steel was also investigated with different critical plane models under strain control. 19 Both proportional and nonproportional loading conditions were studied with different combinations of tension, compression, and torsion.…”

Section: Introductionmentioning

confidence: 99%

Investigation of the multiaxial fatigue behaviour of 316 stainless steel based on critical plane method

Cruces

López-Crespo

Bressan

et al. 2019

Fatigue Fract Eng Mat Struct

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In this work, the multiaxial behaviour of 316 stainless steel is studied under the lens of critical plane approach. A series of experiments were developed on dog bone–shaped hollow cylindrical specimens made of type 316 stainless steel. Five different loading conditions were assessed with (a) only tensile axial stress, (b) only hoop stress, (c) combination of axial and hoop stresses with square shape, (d) combination of tensile axial and hoop stresses with L shape, and (e) combination of compressive axial and hoop stresses with L shape. The fatigue analysis is performed with four different critical plane theories, namely, Wang‐Brown, Fatemi‐Socie, Liu I, and Liu II. The efficiency of all four theories is studied in terms of the accuracy of their life predictions and crack failure plane angle. The best fatigue life predictions were obtained with Liu II model, and the best predictions of the failure plane were obtained with Liu I model.

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Creep and Creep-fatigue Behaviour of 316 Stainless Steel

Cited by 21 publications

References 6 publications

Predicting failure modes in creep and creep-fatigue crack growth using a random grain/grain boundary idealised microstructure meshing system

Predicting failure modes in creep and creep-fatigue crack growth using a random grain/grain boundary idealised microstructure meshing system

The Unified Creep-Fatigue Equation for Stainless Steel 316

Investigation of the multiaxial fatigue behaviour of 316 stainless steel based on critical plane method

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