Fatigue strength of USP treated ASTM CA6NM for hydraulic turbine runner

J. Arakawa; M. Kakuta; Y. Hayashi; R. Tanegashima; H. Akebono; M. Kato; A. Sugeta

doi:10.1179/1743294414Y.0000000308

Fatigue strength of USP treated ASTM CA6NM for hydraulic turbine runner

J. Arakawa, M. Kakuta, Y. Hayashi, R. Tanegashima, H. Akebono, M. Kato, A. Sugeta

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

22 Citations (Scopus)

Abstract

In order to investigate the effect of an ultrasonic shot peening (USP) treatment on the fatigue characteristics of structural materials for hydroelectric facilities, plane bending fatigue tests were carried out using USP treated ASTM CA6NM stainless cast steel. The results showed that the fatigue limit of the USP material was approximately 60% higher than that of the untreated material. Haigh's diagram evaluation suggested that an increase in crack initiation resistance associated with the high hardness and compressive residual stress by USP treatment was the main reason for the improvement in fatigue strength. Furthermore, the simulation of fatigue crack propagation implied that compressive residual stress leads to a low crack propagation rate compared with the untreated material. Consequently, it is clear that the USP treatment is an effective process for improving the fatigue properties of CA6NM.

Original language	English
Pages (from-to)	662-669
Number of pages	8
Journal	Surface Engineering
Volume	30
Issue number	9
DOIs	https://doi.org/10.1179/1743294414Y.0000000308
Publication status	Published - Sept 1 2014
Externally published	Yes

Keywords

Crack propagation simulation
Fatigue
Haigh's diagram
Ultrasonic shot peening

ASJC Scopus subject areas

Condensed Matter Physics
Surfaces and Interfaces
Surfaces, Coatings and Films
Materials Chemistry

Access to Document

10.1179/1743294414Y.0000000308

Cite this

@article{d8b842dfdde6468690cb28a624fd4ecd,

title = "Fatigue strength of USP treated ASTM CA6NM for hydraulic turbine runner",

abstract = "In order to investigate the effect of an ultrasonic shot peening (USP) treatment on the fatigue characteristics of structural materials for hydroelectric facilities, plane bending fatigue tests were carried out using USP treated ASTM CA6NM stainless cast steel. The results showed that the fatigue limit of the USP material was approximately 60% higher than that of the untreated material. Haigh's diagram evaluation suggested that an increase in crack initiation resistance associated with the high hardness and compressive residual stress by USP treatment was the main reason for the improvement in fatigue strength. Furthermore, the simulation of fatigue crack propagation implied that compressive residual stress leads to a low crack propagation rate compared with the untreated material. Consequently, it is clear that the USP treatment is an effective process for improving the fatigue properties of CA6NM.",

keywords = "Crack propagation simulation, Fatigue, Haigh's diagram, Ultrasonic shot peening",

author = "J. Arakawa and M. Kakuta and Y. Hayashi and R. Tanegashima and H. Akebono and M. Kato and A. Sugeta",

note = "Publisher Copyright: {\textcopyright} 2014 Institute of Materials, Minerals and Mining.",

year = "2014",

month = sep,

day = "1",

doi = "10.1179/1743294414Y.0000000308",

language = "English",

volume = "30",

pages = "662--669",

journal = "Surface Engineering",

issn = "0267-0844",

publisher = "Maney Publishing",

number = "9",

}

TY - JOUR

T1 - Fatigue strength of USP treated ASTM CA6NM for hydraulic turbine runner

AU - Arakawa, J.

AU - Kakuta, M.

AU - Hayashi, Y.

AU - Tanegashima, R.

AU - Akebono, H.

AU - Kato, M.

AU - Sugeta, A.

PY - 2014/9/1

Y1 - 2014/9/1

N2 - In order to investigate the effect of an ultrasonic shot peening (USP) treatment on the fatigue characteristics of structural materials for hydroelectric facilities, plane bending fatigue tests were carried out using USP treated ASTM CA6NM stainless cast steel. The results showed that the fatigue limit of the USP material was approximately 60% higher than that of the untreated material. Haigh's diagram evaluation suggested that an increase in crack initiation resistance associated with the high hardness and compressive residual stress by USP treatment was the main reason for the improvement in fatigue strength. Furthermore, the simulation of fatigue crack propagation implied that compressive residual stress leads to a low crack propagation rate compared with the untreated material. Consequently, it is clear that the USP treatment is an effective process for improving the fatigue properties of CA6NM.

AB - In order to investigate the effect of an ultrasonic shot peening (USP) treatment on the fatigue characteristics of structural materials for hydroelectric facilities, plane bending fatigue tests were carried out using USP treated ASTM CA6NM stainless cast steel. The results showed that the fatigue limit of the USP material was approximately 60% higher than that of the untreated material. Haigh's diagram evaluation suggested that an increase in crack initiation resistance associated with the high hardness and compressive residual stress by USP treatment was the main reason for the improvement in fatigue strength. Furthermore, the simulation of fatigue crack propagation implied that compressive residual stress leads to a low crack propagation rate compared with the untreated material. Consequently, it is clear that the USP treatment is an effective process for improving the fatigue properties of CA6NM.

KW - Crack propagation simulation

KW - Fatigue

KW - Haigh's diagram

KW - Ultrasonic shot peening

UR - http://www.scopus.com/inward/record.url?scp=84906572449&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84906572449&partnerID=8YFLogxK

U2 - 10.1179/1743294414Y.0000000308

DO - 10.1179/1743294414Y.0000000308

M3 - Article

AN - SCOPUS:84906572449

SN - 0267-0844

VL - 30

SP - 662

EP - 669

JO - Surface Engineering

JF - Surface Engineering

IS - 9

ER -

Fatigue strength of USP treated ASTM CA6NM for hydraulic turbine runner

Abstract

Keywords

ASJC Scopus subject areas

Access to Document

Other files and links

Fingerprint

Cite this