Low cycle fatigue of a Ni-based superalloy: Non-planar deformation

Patrick J. Phillips; Raymond R. Unocic; L. Kovarik; David Mourer; Dan Wei; Michael J. Mills

doi:10.1016/j.scriptamat.2010.01.044

Low cycle fatigue of a Ni-based superalloy: Non-planar deformation

Patrick J. Phillips, Raymond R. Unocic, L. Kovarik, David Mourer, Dan Wei, Michael J. Mills

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

38 Scopus citations

Abstract

Cyclic softening is observed in the polycrystalline Ni-based superalloy R104 at elevated temperatures. Using transmission electron microscopy characterization methods, the damage evolution in fatigued specimens was studied. The observed deformation modes include paired APB shearing, intense planar dislocation bands, and cross-slipping processes between {1 1 1} and {0 0 1} planes. A rationale for the observed mechanisms in terms of time-dependent damage processes will be discussed.

Original language	English
Pages (from-to)	790-793
Number of pages	4
Journal	Scripta Materialia
Volume	62
Issue number	10
DOIs	https://doi.org/10.1016/j.scriptamat.2010.01.044
State	Published - May 2010
Externally published	Yes

Keywords

Cube-slip
Deformation structure
Low cycle fatigue
Scanning/transmission electron microscopy

Access to Document

10.1016/j.scriptamat.2010.01.044

Cite this

@article{843750db2b754bf78351d4127704c9ef,

title = "Low cycle fatigue of a Ni-based superalloy: Non-planar deformation",

abstract = "Cyclic softening is observed in the polycrystalline Ni-based superalloy R104 at elevated temperatures. Using transmission electron microscopy characterization methods, the damage evolution in fatigued specimens was studied. The observed deformation modes include paired APB shearing, intense planar dislocation bands, and cross-slipping processes between {1 1 1} and {0 0 1} planes. A rationale for the observed mechanisms in terms of time-dependent damage processes will be discussed.",

keywords = "Cube-slip, Deformation structure, Low cycle fatigue, Scanning/transmission electron microscopy",

author = "Phillips, {Patrick J.} and Unocic, {Raymond R.} and L. Kovarik and David Mourer and Dan Wei and Mills, {Michael J.}",

year = "2010",

month = may,

doi = "10.1016/j.scriptamat.2010.01.044",

language = "English",

volume = "62",

pages = "790--793",

journal = "Scripta Materialia",

issn = "1359-6462",

publisher = "Elsevier",

number = "10",

}

TY - JOUR

T1 - Low cycle fatigue of a Ni-based superalloy

T2 - Non-planar deformation

AU - Phillips, Patrick J.

AU - Unocic, Raymond R.

AU - Kovarik, L.

AU - Mourer, David

AU - Wei, Dan

AU - Mills, Michael J.

PY - 2010/5

Y1 - 2010/5

N2 - Cyclic softening is observed in the polycrystalline Ni-based superalloy R104 at elevated temperatures. Using transmission electron microscopy characterization methods, the damage evolution in fatigued specimens was studied. The observed deformation modes include paired APB shearing, intense planar dislocation bands, and cross-slipping processes between {1 1 1} and {0 0 1} planes. A rationale for the observed mechanisms in terms of time-dependent damage processes will be discussed.

AB - Cyclic softening is observed in the polycrystalline Ni-based superalloy R104 at elevated temperatures. Using transmission electron microscopy characterization methods, the damage evolution in fatigued specimens was studied. The observed deformation modes include paired APB shearing, intense planar dislocation bands, and cross-slipping processes between {1 1 1} and {0 0 1} planes. A rationale for the observed mechanisms in terms of time-dependent damage processes will be discussed.

KW - Cube-slip

KW - Deformation structure

KW - Low cycle fatigue

KW - Scanning/transmission electron microscopy

UR - http://www.scopus.com/inward/record.url?scp=77649273698&partnerID=8YFLogxK

U2 - 10.1016/j.scriptamat.2010.01.044

DO - 10.1016/j.scriptamat.2010.01.044

M3 - Article

AN - SCOPUS:77649273698

SN - 1359-6462

VL - 62

SP - 790

EP - 793

JO - Scripta Materialia

JF - Scripta Materialia

IS - 10

ER -

Low cycle fatigue of a Ni-based superalloy: Non-planar deformation

Abstract

Keywords

Access to Document

Other files and links

Fingerprint

Cite this