Effects of Te on intergranular embrittlement of a Ni–16Mo–7Cr alloy

Cheng, Hui-Wen; Han, Fenfen; Jia, Yanyan; Li, Zhijun; Zhou, Xingtai

doi:10.1016/j.jnucmat.2015.01.049

Cited by 34 publications

(8 citation statements)

References 17 publications

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“…It seems that due to the high carbon content, the aggregation of the carbide phases of molybdenum, silicon and nickel occurs, which occurs more on the surface of the alloy than in the grains. The similar corrosion behavior of the Hastelloy-N alloy with accumulation of carbides on reaction surface was also found for a molten LiF-BeF 2 salt mixture exposed in graphite crucible [18][19][20][21][22][23][24][25].…”

Section: Selective Chromium Corrosionsupporting

confidence: 73%

Effect of the [U(IV)]/[U(III)] ratio on selective chromium corrosion and tellurium intergranular cracking of Hastelloy N alloy in the fuel LiF-BeF₂-UF₄ salt

Surenkov

Ignatiev

Presnyakov

et al. 2020

EPJ Nuclear Sci. Technol.

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Effect of the [U(IV)/U(III)] ratio of fuel salt on selective chromium corrosion and tellurium intergranular cracking (IGC) of Hastelloy N alloy in the LiF-BeF2-UF4 salt mixture was investigated. The chromium corrosion of Hastelloy N alloy is caused by the oxidation of chromium on the alloy surface by reaction with UF4. The tellurium IGC of Hastelloy N alloy is caused by the diffusion of tellurium along the grain boundaries with the formation of unstable tellurides with based metals and alloying additives. Results indicate that the selective chromium corrosion and the tellurium IGC of the Hastelloy N alloy in fuel salt can be controlled by the [U(IV)]/[U(III)] ratio. The tellurium IGC of Hastelloy N alloy exposed in fuel LiF-BeF2-UF4 salt can be avoided. For temperatures up to 760 °C the selective chromium corrosion can be minimized to the acceptable level when the [U(IV)]/[U(III)] ratio of fuel salt is bellow 30–40.

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Section: Selective Chromium Corrosionsupporting

confidence: 73%

Effect of the [U(IV)]/[U(III)] ratio on selective chromium corrosion and tellurium intergranular cracking of Hastelloy N alloy in the fuel LiF-BeF₂-UF₄ salt

Surenkov

Ignatiev

Presnyakov

et al. 2020

EPJ Nuclear Sci. Technol.

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“…The extent of grain boundary embrittlement cracking caused by Te depends on the diffusion rate of Te in the alloy. In addition, the occurrence of Te-induced stress corrosion cracking at the grain boundaries is influenced by the concentration of Te and the applied stress load [182][183][184][185][186].…”

Section: Effects Of the Irradiation Environmentmentioning

confidence: 99%

Review on synergistic damage effect of irradiation and corrosion on reactor structural alloys

Liu,

Lei,

Huang

2024

NUCL SCI TECH

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The synergistic damage effect of irradiation and corrosion of reactor structural materials has been a prominent research focus. This paper provides a comprehensive review of the synergistic effects on the third- and fourth-generation fission nuclear energy structural materials used in pressurized water reactors and molten salt reactors. The competitive mechanisms of multiple influencing factors, such as the irradiation dose, corrosion type, and environmental temperature, are summarized in this paper. Conceptual approaches are proposed to alleviate the synergistic damage caused by irradiation and corrosion, thereby promoting in-depth research in the future and solving this key challenge for the structural materials used in reactors.

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“…Experimental works about Te embrittlement have veried that Te penetrated the nickel GBs along the high diffusivity paths. 4,39 Fig. 6 shows the investigated diffusion pathway along the four GBs.…”

Section: The Segregation Of Te At Nimentioning

confidence: 99%

Diffusion of tellurium at nickel grain boundaries: a first-principles study

et al. 2017

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Effects of Te on intergranular embrittlement of a Ni–16Mo–7Cr alloy

Cited by 34 publications

References 17 publications

Effect of the [U(IV)]/[U(III)] ratio on selective chromium corrosion and tellurium intergranular cracking of Hastelloy N alloy in the fuel LiF-BeF₂-UF₄ salt

Effect of the [U(IV)]/[U(III)] ratio on selective chromium corrosion and tellurium intergranular cracking of Hastelloy N alloy in the fuel LiF-BeF₂-UF₄ salt

Review on synergistic damage effect of irradiation and corrosion on reactor structural alloys

Diffusion of tellurium at nickel grain boundaries: a first-principles study

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Effects of Te on intergranular embrittlement of a Ni–16Mo–7Cr alloy

Cited by 34 publications

References 17 publications

Effect of the [U(IV)]/[U(III)] ratio on selective chromium corrosion and tellurium intergranular cracking of Hastelloy N alloy in the fuel LiF-BeF2-UF4 salt

Effect of the [U(IV)]/[U(III)] ratio on selective chromium corrosion and tellurium intergranular cracking of Hastelloy N alloy in the fuel LiF-BeF2-UF4 salt

Review on synergistic damage effect of irradiation and corrosion on reactor structural alloys

Diffusion of tellurium at nickel grain boundaries: a first-principles study

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Product

Resources

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Effect of the [U(IV)]/[U(III)] ratio on selective chromium corrosion and tellurium intergranular cracking of Hastelloy N alloy in the fuel LiF-BeF₂-UF₄ salt

Effect of the [U(IV)]/[U(III)] ratio on selective chromium corrosion and tellurium intergranular cracking of Hastelloy N alloy in the fuel LiF-BeF₂-UF₄ salt