Abstract
Persistent slip bands (PSB) is the important and typical microstructure generated during fatigue crack initiation. Intensive works have been done to investigate the
mechanisms of the formation of persistent slip bands in the past decade. In this paper, a molecular dynamics (MD) simulation associated with embedded atom model (EAM) is applied on the PSBs formation in nickel-base superalloys
with different microstructure and temperature under tensiletensile loadings. Simulation results show that PSBs formed within the ¿ phase by massive dislocations pile-up and propagation which can penetrate the grain. Also, the
temperature will affect the material fatigue performance and blur PSBs appearance. The simulation results are in strong agreement with the experimental test results published before.
mechanisms of the formation of persistent slip bands in the past decade. In this paper, a molecular dynamics (MD) simulation associated with embedded atom model (EAM) is applied on the PSBs formation in nickel-base superalloys
with different microstructure and temperature under tensiletensile loadings. Simulation results show that PSBs formed within the ¿ phase by massive dislocations pile-up and propagation which can penetrate the grain. Also, the
temperature will affect the material fatigue performance and blur PSBs appearance. The simulation results are in strong agreement with the experimental test results published before.
Original language | English |
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Title of host publication | 21st International conference on automation and computing |
Place of Publication | New York |
Publisher | IEEE |
ISBN (Electronic) | 978-0-9926-8011-4 |
DOIs | |
Publication status | Published - Sep 2015 |
Keywords
- Persistent slip bands
- PSB
- fatigue
- strain
- load modeling
- stress
- FCC
- Nickel
- lattices