Low Cycle Fatigue Behavior and Mechanism of Newly Developed Advanced Heat Resistant Austenitic Stainless Steels at High Temperature

Guo Cai Chai

doi:10.4028/www.scientific.net/AMR.891-892.377

Paper Titles

Influence of Crack Retardation on Fatigue Crack Propagation in Steels for Railway Axles
p.351

Investigations on the Fatigue Crack Propagation Threshold in Very High Cycle Fatigue
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J-Integral Approach to Creep-Fatigue Crack Propagation in Lead-Free Solder under Various Loading Waveforms
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Determination of Creep Crack Growth Threshold by Experiments under Elevated Temperature with Pre-Stressed Specimens
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Low Cycle Fatigue Behavior and Mechanism of Newly Developed Advanced Heat Resistant Austenitic Stainless Steels at High Temperature
p.377

Low Cycle Fatigue and Creep-Fatigue Interaction Behaviour of Reduced Activation Ferritic Martensitic (RAFM) Steels with Varying W and Ta Contents
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Cyclic Deformation of Rare-Earth Containing Magnesium Alloys
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Fatigue Behaviour of AZ91 Magnesium Alloy in as-Cast and Severe Plastic Deformed Conditions
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Fatigue of Austenitic High Interstitial Steels - The Role of N and C
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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 891-892Low Cycle Fatigue Behavior and Mechanism of Newly...

Low Cycle Fatigue Behavior and Mechanism of Newly Developed Advanced Heat Resistant Austenitic Stainless Steels at High Temperature

Abstract:

Austenitic stainless steel grade UNS S31035 (Sandvik Sanicro® 25) has been developed for the next generation of 700°C A-USC power plant. This paper will mainly focus on the study of low cycle fatigue behavior and damage mechanisms of the material at room temperature, 600C to 700C by using electron back scatter diffraction and electron channeling contrast image techniques. At room temperature, the material shows a hardening and softening behavior as usual. At high temperature, however, it shows only a cyclic hardening behavior. Dynamic strain ageing can be one of the mechanisms. The damage and fatigue crack initiation mechanisms due to cyclic loading at different temperatures and loading conditions have been identified. The interactions between dislocations or slip bands with grain boundary or twin boundary are the main damage mechanism at low temperature or at high temperature with large strain amplitudes. Strain localization due to dislocation slipping is the main mechanism for the damage in grain.

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Periodical:

Advanced Materials Research (Volumes 891-892)

Pages:

377-382

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.891-892.377

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Online since:

March 2014

Authors:

Guo Cai Chai

Keywords:

A-USC, Damage, Heat Resistant Austenitic Stainless Steel, Low Cycle Fatigue, Superheater

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