Cyclic deformation behavior of a nickel-base superalloy under fatigue loading

Peng Zhang; Qiang Zhu; Chao Hu; Chuan jie Wang; Gang Chen; He yong Qin

doi:10.1016/j.matdes.2014.12.047

Cyclic deformation behavior of a nickel-base superalloy under fatigue loading

Peng Zhang^*
, Qiang Zhu
, Chao Hu
, Chuan jie Wang
, Gang Chen
, He yong Qin

^*Corresponding author for this work

Harbin Institute of Technology
China Iron and Steel Research Institute Group

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

87 Scopus citations

Abstract

Total strain-controlled low cycle fatigue (LCF) tests of a nickel-base superalloy were performed at 650. °C. Combined with fatigue test data, cyclic deformation behaviors of the alloy were analyzed. Fatigue cycle life decreases significantly with the increasing total strain amplitude. The cyclic hardening and cyclic softening phenomena occur during the LCF process, which are associated with the total strain amplitude. Fracture morphologies and dislocation characteristics were observed through scanning electron microscopy (SEM) and transmission electron microscopy (TEM). The combined effects of brittle fracture and ductile fracture are the main LCF fracture mechanism of the alloy.

Original language	English
Pages (from-to)	12-21
Number of pages	10
Journal	Materials and Design
Volume	69
DOIs	https://doi.org/10.1016/j.matdes.2014.12.047
State	Published - 15 Mar 2015
Externally published	Yes

Keywords

Cyclic deformation behaviors
Dislocation characteristics
Fracture morphology
Low cycle fatigue

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10.1016/j.matdes.2014.12.047

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title = "Cyclic deformation behavior of a nickel-base superalloy under fatigue loading",

abstract = "Total strain-controlled low cycle fatigue (LCF) tests of a nickel-base superalloy were performed at 650. °C. Combined with fatigue test data, cyclic deformation behaviors of the alloy were analyzed. Fatigue cycle life decreases significantly with the increasing total strain amplitude. The cyclic hardening and cyclic softening phenomena occur during the LCF process, which are associated with the total strain amplitude. Fracture morphologies and dislocation characteristics were observed through scanning electron microscopy (SEM) and transmission electron microscopy (TEM). The combined effects of brittle fracture and ductile fracture are the main LCF fracture mechanism of the alloy.",

keywords = "Cyclic deformation behaviors, Dislocation characteristics, Fracture morphology, Low cycle fatigue",

author = "Peng Zhang and Qiang Zhu and Chao Hu and Wang, \{Chuan jie\} and Gang Chen and Qin, \{He yong\}",

note = "Publisher Copyright: {\textcopyright} 2014 Elsevier Ltd.",

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doi = "10.1016/j.matdes.2014.12.047",

language = "英语",

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T1 - Cyclic deformation behavior of a nickel-base superalloy under fatigue loading

AU - Zhang, Peng

AU - Zhu, Qiang

AU - Hu, Chao

AU - Wang, Chuan jie

AU - Chen, Gang

AU - Qin, He yong

PY - 2015/3/15

Y1 - 2015/3/15

N2 - Total strain-controlled low cycle fatigue (LCF) tests of a nickel-base superalloy were performed at 650. °C. Combined with fatigue test data, cyclic deformation behaviors of the alloy were analyzed. Fatigue cycle life decreases significantly with the increasing total strain amplitude. The cyclic hardening and cyclic softening phenomena occur during the LCF process, which are associated with the total strain amplitude. Fracture morphologies and dislocation characteristics were observed through scanning electron microscopy (SEM) and transmission electron microscopy (TEM). The combined effects of brittle fracture and ductile fracture are the main LCF fracture mechanism of the alloy.

AB - Total strain-controlled low cycle fatigue (LCF) tests of a nickel-base superalloy were performed at 650. °C. Combined with fatigue test data, cyclic deformation behaviors of the alloy were analyzed. Fatigue cycle life decreases significantly with the increasing total strain amplitude. The cyclic hardening and cyclic softening phenomena occur during the LCF process, which are associated with the total strain amplitude. Fracture morphologies and dislocation characteristics were observed through scanning electron microscopy (SEM) and transmission electron microscopy (TEM). The combined effects of brittle fracture and ductile fracture are the main LCF fracture mechanism of the alloy.

KW - Cyclic deformation behaviors

KW - Dislocation characteristics

KW - Fracture morphology

KW - Low cycle fatigue

UR - https://www.scopus.com/pages/publications/84922794620

U2 - 10.1016/j.matdes.2014.12.047

DO - 10.1016/j.matdes.2014.12.047

M3 - 文章

AN - SCOPUS:84922794620

SN - 0264-1275

VL - 69

SP - 12

EP - 21

JO - Materials and Design

JF - Materials and Design

ER -

Cyclic deformation behavior of a nickel-base superalloy under fatigue loading

Abstract

Keywords

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