Uniaxial low cycle fatigue behavior for pre-corroded 16MND5 bainitic steel in simulated pressurized water reactor environment

Xu Chen; Bin Ren; Dunji Yu; Bin Xu; Zhe Zhang; Gang Chen

doi:10.1016/j.jnucmat.2018.03.042

Uniaxial low cycle fatigue behavior for pre-corroded 16MND5 bainitic steel in simulated pressurized water reactor environment

Xu Chen, Bin Ren, Dunji Yu, Bin Xu, Zhe Zhang, Gang Chen

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

6 Scopus citations

Abstract

The effects of uniaxial tension properties and low cycle fatigue behavior of 16MND5 bainitic steel cylinder pre-corroded in simulated pressurized water reactor (PWR) were investigated by fatigue at room temperature in air and immersion test system, scanning electron microscopy (SEM), energy disperse spectroscopy (EDS). The experimental results indicated that the corrosion fatigue lives of 16MND5 specimen were significantly affected by the strain amplitude and simulated PWR environments. The compositions of corrosion products were complexly formed in simulated PWR environments. The porous corrosion surface of pre-corroded materials tended to generate pits as a result of promoting contact area to the fresh metal, which promoted crack initiation. For original materials, the fatigue cracks initiated at inclusions imbedded in the micro-cracks. Moreover, the simulated PWR environments degraded the mechanical properties and low cycle fatigue behavior of 16MND5 specimens remarkably. Pre-corrosion of 16MND5 specimen mainly affected the plastic term of the Coffin-Manson equation.

Original language	English
Pages (from-to)	267-276
Number of pages	10
Journal	Journal of Nuclear Materials
Volume	504
DOIs	https://doi.org/10.1016/j.jnucmat.2018.03.042
State	Published - Jun 2018
Externally published	Yes

Funding

The authors are grateful for the financial support from the National Natural Science Foundation of China (with Grant No. 51435012 ) and Science and Technology on Reactor System Design Technology Laboratory .

Funders	Funder number
Science Technology on Reactor System Design Technology Laboratory, Nuclear Power Institute of China
National Natural Science Foundation of China	51435012

Keywords

16MND5
Corrosion fatigue
Failure life
Low cycle fatigue
Pressurized water reactor

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10.1016/j.jnucmat.2018.03.042

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title = "Uniaxial low cycle fatigue behavior for pre-corroded 16MND5 bainitic steel in simulated pressurized water reactor environment",

abstract = "The effects of uniaxial tension properties and low cycle fatigue behavior of 16MND5 bainitic steel cylinder pre-corroded in simulated pressurized water reactor (PWR) were investigated by fatigue at room temperature in air and immersion test system, scanning electron microscopy (SEM), energy disperse spectroscopy (EDS). The experimental results indicated that the corrosion fatigue lives of 16MND5 specimen were significantly affected by the strain amplitude and simulated PWR environments. The compositions of corrosion products were complexly formed in simulated PWR environments. The porous corrosion surface of pre-corroded materials tended to generate pits as a result of promoting contact area to the fresh metal, which promoted crack initiation. For original materials, the fatigue cracks initiated at inclusions imbedded in the micro-cracks. Moreover, the simulated PWR environments degraded the mechanical properties and low cycle fatigue behavior of 16MND5 specimens remarkably. Pre-corrosion of 16MND5 specimen mainly affected the plastic term of the Coffin-Manson equation.",

keywords = "16MND5, Corrosion fatigue, Failure life, Low cycle fatigue, Pressurized water reactor",

author = "Xu Chen and Bin Ren and Dunji Yu and Bin Xu and Zhe Zhang and Gang Chen",

note = "Publisher Copyright: {\textcopyright} 2018 Elsevier B.V.",

year = "2018",

month = jun,

doi = "10.1016/j.jnucmat.2018.03.042",

language = "English",

volume = "504",

pages = "267--276",

journal = "Journal of Nuclear Materials",

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AU - Chen, Xu

AU - Ren, Bin

AU - Yu, Dunji

AU - Xu, Bin

AU - Zhang, Zhe

AU - Chen, Gang

PY - 2018/6

Y1 - 2018/6

N2 - The effects of uniaxial tension properties and low cycle fatigue behavior of 16MND5 bainitic steel cylinder pre-corroded in simulated pressurized water reactor (PWR) were investigated by fatigue at room temperature in air and immersion test system, scanning electron microscopy (SEM), energy disperse spectroscopy (EDS). The experimental results indicated that the corrosion fatigue lives of 16MND5 specimen were significantly affected by the strain amplitude and simulated PWR environments. The compositions of corrosion products were complexly formed in simulated PWR environments. The porous corrosion surface of pre-corroded materials tended to generate pits as a result of promoting contact area to the fresh metal, which promoted crack initiation. For original materials, the fatigue cracks initiated at inclusions imbedded in the micro-cracks. Moreover, the simulated PWR environments degraded the mechanical properties and low cycle fatigue behavior of 16MND5 specimens remarkably. Pre-corrosion of 16MND5 specimen mainly affected the plastic term of the Coffin-Manson equation.

AB - The effects of uniaxial tension properties and low cycle fatigue behavior of 16MND5 bainitic steel cylinder pre-corroded in simulated pressurized water reactor (PWR) were investigated by fatigue at room temperature in air and immersion test system, scanning electron microscopy (SEM), energy disperse spectroscopy (EDS). The experimental results indicated that the corrosion fatigue lives of 16MND5 specimen were significantly affected by the strain amplitude and simulated PWR environments. The compositions of corrosion products were complexly formed in simulated PWR environments. The porous corrosion surface of pre-corroded materials tended to generate pits as a result of promoting contact area to the fresh metal, which promoted crack initiation. For original materials, the fatigue cracks initiated at inclusions imbedded in the micro-cracks. Moreover, the simulated PWR environments degraded the mechanical properties and low cycle fatigue behavior of 16MND5 specimens remarkably. Pre-corrosion of 16MND5 specimen mainly affected the plastic term of the Coffin-Manson equation.

KW - 16MND5

KW - Corrosion fatigue

KW - Failure life

KW - Low cycle fatigue

KW - Pressurized water reactor

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SN - 0022-3115

VL - 504

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JO - Journal of Nuclear Materials

JF - Journal of Nuclear Materials

ER -

Uniaxial low cycle fatigue behavior for pre-corroded 16MND5 bainitic steel in simulated pressurized water reactor environment

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Keywords

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