Computational investigation of superalloy persistent slip bands formation

Jianfeng Huang; Zhonglai  Wang; Yuanxin  Luo; Yun  Li; Erfu  Yang; Yi Chen

doi:10.1109/IConAC.2015.7313999

Computational investigation of superalloy persistent slip bands formation

Jianfeng Huang, Zhonglai Wang, Yuanxin Luo, Yun Li, Erfu Yang, Yi Chen

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

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.

Original language	English
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	https://doi.org/10.1109/IConAC.2015.7313999
Publication status	Published - Sep 2015

Keywords

Persistent slip bands
PSB
fatigue
strain
load modeling
stress
FCC
Nickel
lattices

Documents and Links

10.1109/IConAC.2015.7313999

http://csee.essex.ac.uk/ICAC2015/

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title = "Computational investigation of superalloy persistent slip bands formation",

abstract = "Persistent slip bands (PSB) is the important and typical microstructure generated during fatigue crack initiation. Intensive works have been done to investigate themechanisms 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 superalloyswith 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, thetemperature will affect the material fatigue performance and blur PSBs appearance. The simulation results are in strong agreement with the experimental test results published before.",

keywords = "Persistent slip bands, PSB, fatigue, strain, load modeling, stress, FCC, Nickel, lattices",

author = "Jianfeng Huang and Zhonglai Wang and Yuanxin Luo and Yun Li and Erfu Yang and Yi Chen",

year = "2015",

month = sep,

doi = "10.1109/IConAC.2015.7313999",

language = "English",

booktitle = "21st International conference on automation and computing",

publisher = "IEEE",

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T1 - Computational investigation of superalloy persistent slip bands formation

AU - Huang, Jianfeng

AU - Wang, Zhonglai

AU - Luo, Yuanxin

AU - Li, Yun

AU - Yang, Erfu

AU - Chen, Yi

PY - 2015/9

Y1 - 2015/9

N2 - Persistent slip bands (PSB) is the important and typical microstructure generated during fatigue crack initiation. Intensive works have been done to investigate themechanisms 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 superalloyswith 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, thetemperature will affect the material fatigue performance and blur PSBs appearance. The simulation results are in strong agreement with the experimental test results published before.

AB - Persistent slip bands (PSB) is the important and typical microstructure generated during fatigue crack initiation. Intensive works have been done to investigate themechanisms 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 superalloyswith 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, thetemperature will affect the material fatigue performance and blur PSBs appearance. The simulation results are in strong agreement with the experimental test results published before.

KW - Persistent slip bands

KW - PSB

KW - fatigue

KW - strain

KW - load modeling

KW - stress

KW - FCC

KW - Nickel

KW - lattices

UR - http://csee.essex.ac.uk/ICAC2015/

U2 - 10.1109/IConAC.2015.7313999

DO - 10.1109/IConAC.2015.7313999

M3 - Conference contribution

BT - 21st International conference on automation and computing

PB - IEEE

CY - New York

ER -