Quantitative estimation of contribution of pore size and the distance between nearest neighbour pores on high cycle fatigue (HCF) crack initiation in Ti-6Al-4V MIM-sintered materials

Isshin Ando, Kentaro Kudo, Kyosuke Hirayama, Yuji Shigeta, Kazunari Shinagawa, Akihisa Takeuchi, Masayuki Uesugi, Yukiko Ozaki

Research output: Contribution to journalArticlepeer-review

Abstract

The fatigue damages due to pores of MIM-sintered Ti64 were investigated using the synchrotron X-ray CT imaging. The effect of pores on the fatigue strength limits was analysed independently from that of grain size by introducing the fatigue limit ratio RF. The pores near to the maximum-stress area were identified by elastic FEM. The maximum stress intensity factor KI-max at the edge of the identified pores showed a negative correlation with RF. Moreover, the initial cleavage in the crack was influenced by the mutual interference of both stress fields by the proximity of the identified pore and its adjacent pores.

Original languageEnglish
Article number107557
JournalInternational Journal of Fatigue
Volume171
DOIs
Publication statusPublished - Jun 2023

All Science Journal Classification (ASJC) codes

  • Modelling and Simulation
  • General Materials Science
  • Mechanics of Materials
  • Mechanical Engineering
  • Industrial and Manufacturing Engineering

Fingerprint

Dive into the research topics of 'Quantitative estimation of contribution of pore size and the distance between nearest neighbour pores on high cycle fatigue (HCF) crack initiation in Ti-6Al-4V MIM-sintered materials'. Together they form a unique fingerprint.

Cite this