An investigation on high temperature fatigue properties of tempered nuclear-grade deposited weld metals

X. Y. Cao; P. Zhu; Q. Yong; T. G. Liu; Y. H. Lu; J. C. Zhao; Y. Jiang; T. Shoji

doi:10.1016/j.jnucmat.2017.12.002

An investigation on high temperature fatigue properties of tempered nuclear-grade deposited weld metals

X. Y. Cao, P. Zhu, Q. Yong, T. G. Liu, Y. H. Lu, J. C. Zhao, Y. Jiang, T. Shoji

New Industry Creation Hatchery Center (NICHe)

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

4 Citations (Scopus)

Abstract

Effect of tempering on low cycle fatigue (LCF) behaviors of nuclear-grade deposited weld metal was investigated, and The LCF tests were performed at 350 °C with strain amplitudes ranging from 0.2% to 0.6%. The results showed that at a low strain amplitude, deposited weld metal tempered for 1 h had a high fatigue resistance due to high yield strength, while at a high strain amplitude, the one tempered for 24 h had a superior fatigue resistance due to high ductility. Deposited weld metal tempered for 1 h exhibited cyclic hardening at the tested strain amplitudes. Deposited weld metal tempered for 24 h exhibited cyclic hardening at a low strain amplitude but cyclic softening at a high strain amplitude. Existence and decomposition of martensite-austenite (M-A) islands as well as dislocations activities contributed to fatigue property discrepancy among the two tempered deposited weld metal.

Original language	English
Pages (from-to)	317-325
Number of pages	9
Journal	Journal of Nuclear Materials
Volume	499
DOIs	https://doi.org/10.1016/j.jnucmat.2017.12.002
Publication status	Published - 2018 Feb

Keywords

Deposited weld metal
High temperature
Low cycle fatigue
Tempering

ASJC Scopus subject areas

Nuclear and High Energy Physics
Materials Science(all)
Nuclear Energy and Engineering

Access to Document

10.1016/j.jnucmat.2017.12.002

Cite this

@article{457471e755e04dd68da69899f28ec19e,

title = "An investigation on high temperature fatigue properties of tempered nuclear-grade deposited weld metals",

abstract = "Effect of tempering on low cycle fatigue (LCF) behaviors of nuclear-grade deposited weld metal was investigated, and The LCF tests were performed at 350 °C with strain amplitudes ranging from 0.2% to 0.6%. The results showed that at a low strain amplitude, deposited weld metal tempered for 1 h had a high fatigue resistance due to high yield strength, while at a high strain amplitude, the one tempered for 24 h had a superior fatigue resistance due to high ductility. Deposited weld metal tempered for 1 h exhibited cyclic hardening at the tested strain amplitudes. Deposited weld metal tempered for 24 h exhibited cyclic hardening at a low strain amplitude but cyclic softening at a high strain amplitude. Existence and decomposition of martensite-austenite (M-A) islands as well as dislocations activities contributed to fatigue property discrepancy among the two tempered deposited weld metal.",

keywords = "Deposited weld metal, High temperature, Low cycle fatigue, Tempering",

author = "Cao, {X. Y.} and P. Zhu and Q. Yong and Liu, {T. G.} and Lu, {Y. H.} and Zhao, {J. C.} and Y. Jiang and T. Shoji",

note = "Funding Information: The authors acknowledge the financial support for the present work from National Key Research and Development Plan ( 2016YFF0203804 ) and Fundamental Research Funds for the Central Universities (No. FRF-TP-16-041A1 ). Publisher Copyright: {\textcopyright} 2017",

year = "2018",

month = feb,

doi = "10.1016/j.jnucmat.2017.12.002",

language = "English",

volume = "499",

pages = "317--325",

journal = "Journal of Nuclear Materials",

issn = "0022-3115",

publisher = "Elsevier",

}

TY - JOUR

T1 - An investigation on high temperature fatigue properties of tempered nuclear-grade deposited weld metals

AU - Cao, X. Y.

AU - Zhu, P.

AU - Yong, Q.

AU - Liu, T. G.

AU - Lu, Y. H.

AU - Zhao, J. C.

AU - Jiang, Y.

AU - Shoji, T.

N1 - Funding Information: The authors acknowledge the financial support for the present work from National Key Research and Development Plan ( 2016YFF0203804 ) and Fundamental Research Funds for the Central Universities (No. FRF-TP-16-041A1 ). Publisher Copyright: © 2017

PY - 2018/2

Y1 - 2018/2

N2 - Effect of tempering on low cycle fatigue (LCF) behaviors of nuclear-grade deposited weld metal was investigated, and The LCF tests were performed at 350 °C with strain amplitudes ranging from 0.2% to 0.6%. The results showed that at a low strain amplitude, deposited weld metal tempered for 1 h had a high fatigue resistance due to high yield strength, while at a high strain amplitude, the one tempered for 24 h had a superior fatigue resistance due to high ductility. Deposited weld metal tempered for 1 h exhibited cyclic hardening at the tested strain amplitudes. Deposited weld metal tempered for 24 h exhibited cyclic hardening at a low strain amplitude but cyclic softening at a high strain amplitude. Existence and decomposition of martensite-austenite (M-A) islands as well as dislocations activities contributed to fatigue property discrepancy among the two tempered deposited weld metal.

AB - Effect of tempering on low cycle fatigue (LCF) behaviors of nuclear-grade deposited weld metal was investigated, and The LCF tests were performed at 350 °C with strain amplitudes ranging from 0.2% to 0.6%. The results showed that at a low strain amplitude, deposited weld metal tempered for 1 h had a high fatigue resistance due to high yield strength, while at a high strain amplitude, the one tempered for 24 h had a superior fatigue resistance due to high ductility. Deposited weld metal tempered for 1 h exhibited cyclic hardening at the tested strain amplitudes. Deposited weld metal tempered for 24 h exhibited cyclic hardening at a low strain amplitude but cyclic softening at a high strain amplitude. Existence and decomposition of martensite-austenite (M-A) islands as well as dislocations activities contributed to fatigue property discrepancy among the two tempered deposited weld metal.

KW - Deposited weld metal

KW - High temperature

KW - Low cycle fatigue

KW - Tempering

UR - http://www.scopus.com/inward/record.url?scp=85036664815&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85036664815&partnerID=8YFLogxK

U2 - 10.1016/j.jnucmat.2017.12.002

DO - 10.1016/j.jnucmat.2017.12.002

M3 - Article

AN - SCOPUS:85036664815

SN - 0022-3115

VL - 499

SP - 317

EP - 325

JO - Journal of Nuclear Materials

JF - Journal of Nuclear Materials

ER -

An investigation on high temperature fatigue properties of tempered nuclear-grade deposited weld metals

Abstract

Keywords

ASJC Scopus subject areas

Access to Document

Other files and links

Fingerprint

Cite this