Thermomechanical Fatigue Crack Growth Modeling in a Ni-Based Superalloy Subjected to Sustained Load-Reference-Cited by-同舟云学术

Thermomechanical Fatigue Crack Growth Modeling in a Ni-Based Superalloy Subjected to Sustained Load

Published:2015-08-12 Issue:1 Volume:138 Page:
ISSN:0742-4795
Container-title:Journal of Engineering for Gas Turbines and Power
language:en
Short-container-title:

Author:

Storgärds Erik¹,Simonsson Kjell²,Sjöström Sören²,Moverare Johan³

Affiliation:

1. Division of Solid Mechanics, Linköping University, Linköping SE-58183, Sweden e-mail:

2. Division of Solid Mechanics, Linköping University, Linköping SE-58183, Sweden

3. Division of Engineering Materials, Linköping University, Linköping SE-58183, Sweden

Abstract

Thermomechanical fatigue (TMF) crack growth modeling has been conducted on Inconel 718 with dwell time at maximum load. A history dependent damage model taking dwell damage into account, developed under isothermal conditions, has been extended for TMF conditions. Parameter determination for the model is carried out on isothermal load controlled tests at 550–650 °C for surface cracks, which later have been used to extrapolate parameters used for TMF crack growth. Further, validation of the developed model is conducted on a notched specimen subjected to strain control at 50–550 °C. Satisfying results are gained within reasonable scatter level compared for test and simulated number of cycles to failure.

Publisher

ASME International

Subject

Mechanical Engineering,Energy Engineering and Power Technology,Aerospace Engineering,Fuel Technology,Nuclear Energy and Engineering

Link

http://asmedigitalcollection.asme.org/gasturbinespower/article-pdf/doi/10.1115/1.4031158/6168472/gtp_138_01_012503.pdf

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3. Predictive Modeling of Arbitrary Loaded TMF Crack Growth in Superalloys;MATEC Web of Conferences;2018