Near-tip closure and cyclic plasticity in Ni-based single crystals

S. Rabbolini; P. G. Luccarelli; S. Beretta; S. Foletti; H. Sehitoglu

doi:10.1016/j.ijfatigue.2016.02.035

Near-tip closure and cyclic plasticity in Ni-based single crystals

S. Rabbolini, P. G. Luccarelli, S. Beretta, S. Foletti, H. Sehitoglu

Mechanical Science and Engineering

Research output: Contribution to journal › Article › peer-review

Abstract

Fatigue crack growth was investigated in a 001 oriented single crystal specimen, made of a Ni-based superalloy, Haynes 230. Crack propagation was characterized with digital image correlation: crack closure, measured by analyzing the relative displacements of crack flanks, showed closure levels much lower than polycrystal alloys. Reversed plastic zones were calculated from regressed stress intensity factor ranges and compared to the strain field measured at the crack tip. Experimental results were compared to those provided by a numerical model, which considered both crack propagation and single crystal anisotropic behavior, in terms of crack opening levels and crack tip cyclic plastic zones. Results of the numerical simulations were in good agreement with the experiments.

Original language	English (US)
Pages (from-to)	53-65
Number of pages	13
Journal	International Journal of Fatigue
Volume	89
DOIs	https://doi.org/10.1016/j.ijfatigue.2016.02.035
State	Published - Aug 2016

Keywords

3D finite element analysis
Crack closure
Crystal plasticity
Fatigue crack growth
Single crystal nickel-based alloy

ASJC Scopus subject areas

Modeling and Simulation
Materials Science(all)
Mechanics of Materials
Mechanical Engineering
Industrial and Manufacturing Engineering

Online availability

10.1016/j.ijfatigue.2016.02.035

Library availability

Discover UIUC Full Text

Cite this

@article{db1f1b5f430b45edb014b161aeaa26a8,

title = "Near-tip closure and cyclic plasticity in Ni-based single crystals",

abstract = "Fatigue crack growth was investigated in a 001 oriented single crystal specimen, made of a Ni-based superalloy, Haynes 230. Crack propagation was characterized with digital image correlation: crack closure, measured by analyzing the relative displacements of crack flanks, showed closure levels much lower than polycrystal alloys. Reversed plastic zones were calculated from regressed stress intensity factor ranges and compared to the strain field measured at the crack tip. Experimental results were compared to those provided by a numerical model, which considered both crack propagation and single crystal anisotropic behavior, in terms of crack opening levels and crack tip cyclic plastic zones. Results of the numerical simulations were in good agreement with the experiments.",

keywords = "3D finite element analysis, Crack closure, Crystal plasticity, Fatigue crack growth, Single crystal nickel-based alloy",

author = "S. Rabbolini and Luccarelli, {P. G.} and S. Beretta and S. Foletti and H. Sehitoglu",

note = "Publisher Copyright: {\textcopyright} 2016 Elsevier Ltd",

year = "2016",

month = aug,

doi = "10.1016/j.ijfatigue.2016.02.035",

language = "English (US)",

volume = "89",

pages = "53--65",

journal = "International Journal of Fatigue",

issn = "0142-1123",

publisher = "Elsevier Limited",

}

TY - JOUR

T1 - Near-tip closure and cyclic plasticity in Ni-based single crystals

AU - Rabbolini, S.

AU - Luccarelli, P. G.

AU - Beretta, S.

AU - Foletti, S.

AU - Sehitoglu, H.

PY - 2016/8

Y1 - 2016/8

N2 - Fatigue crack growth was investigated in a 001 oriented single crystal specimen, made of a Ni-based superalloy, Haynes 230. Crack propagation was characterized with digital image correlation: crack closure, measured by analyzing the relative displacements of crack flanks, showed closure levels much lower than polycrystal alloys. Reversed plastic zones were calculated from regressed stress intensity factor ranges and compared to the strain field measured at the crack tip. Experimental results were compared to those provided by a numerical model, which considered both crack propagation and single crystal anisotropic behavior, in terms of crack opening levels and crack tip cyclic plastic zones. Results of the numerical simulations were in good agreement with the experiments.

AB - Fatigue crack growth was investigated in a 001 oriented single crystal specimen, made of a Ni-based superalloy, Haynes 230. Crack propagation was characterized with digital image correlation: crack closure, measured by analyzing the relative displacements of crack flanks, showed closure levels much lower than polycrystal alloys. Reversed plastic zones were calculated from regressed stress intensity factor ranges and compared to the strain field measured at the crack tip. Experimental results were compared to those provided by a numerical model, which considered both crack propagation and single crystal anisotropic behavior, in terms of crack opening levels and crack tip cyclic plastic zones. Results of the numerical simulations were in good agreement with the experiments.

KW - 3D finite element analysis

KW - Crack closure

KW - Crystal plasticity

KW - Fatigue crack growth

KW - Single crystal nickel-based alloy

UR - http://www.scopus.com/inward/record.url?scp=84959522628&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84959522628&partnerID=8YFLogxK

U2 - 10.1016/j.ijfatigue.2016.02.035

DO - 10.1016/j.ijfatigue.2016.02.035

M3 - Article

AN - SCOPUS:84959522628

SN - 0142-1123

VL - 89

SP - 53

EP - 65

JO - International Journal of Fatigue

JF - International Journal of Fatigue

ER -

Near-tip closure and cyclic plasticity in Ni-based single crystals

Abstract

Keywords

ASJC Scopus subject areas

Online availability

Library availability

Related links

Fingerprint

Cite this