Fatigue life of Ni-based single crystal super-alloy specimen with single hole

Xiangzhen Xue, Zhixun Wen, Wenxian Li

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

A method of predicting the fatigue life under multiaxis loads based on the Paris law and EIFS was proposed. And the fatigue life under different loading stress and stress ratio were investigated. The results show that when the loading stress increased from 450~800 MPa, the fatigue life decreased from 6762379 to 10056, as well as when the stress ratio increased from 0.1~1, the fatigue life increased from 6762379 to 14932368. It was validated by test eventually. And the fatigue life model presented here agrees well with test results. It is significant to the prediction of turbine of Ni-based single crystal super-alloy material with filming hole.

Original languageEnglish
Title of host publicationMaterials Science and Technologies
EditorsZong Jin Li
PublisherTrans Tech Publications Ltd
Pages10-16
Number of pages7
ISBN (Print)9783035717891
StatePublished - 2021
Event1st International Conference on Systems Modelling and Management, ICSMM 2020, 8th International Conference on Nanomaterials and Materials Engineering, ICNME 2020 and 9th International Conference on Nano and Materials Science, ICNMS 2021 - Virtual, Online
Duration: 26 Jan 202129 Jan 2021

Publication series

NameKey Engineering Materials
Volume891 KEM
ISSN (Print)1013-9826
ISSN (Electronic)1662-9795

Conference

Conference1st International Conference on Systems Modelling and Management, ICSMM 2020, 8th International Conference on Nanomaterials and Materials Engineering, ICNME 2020 and 9th International Conference on Nano and Materials Science, ICNMS 2021
CityVirtual, Online
Period26/01/2129/01/21

Keywords

  • Crack propagation
  • Equivalent initial fatigue size
  • Fatigue life
  • Multi-axis loads
  • Stress intensity factor

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