2018
DOI: 10.1016/j.jnucmat.2018.07.037
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Effect of thermal cycles on delayed hydride cracking in Zr-2.5Nb alloy

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Cited by 11 publications
(3 citation statements)
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“…The Zr-2.5 wt%Nb alloy is a typical pressure tube material in heavy water nuclear reactors [1][2][3] due to its excellent thermal conductivity and thermal stability, low thermal neutron absorption cross-section, and good creep behavior. [4][5][6][7] However, the performance deterioration of the Zr-2.5 wt% Nb alloy pressure tube under the effect of hydrogen isotopes 3,[8][9][10][11] (hydrogen embrittlement, hydrogen induced delayed cracking, etc.) is a critical concern in the nuclear industrial system.…”
Section: Introductionmentioning
confidence: 99%
“…The Zr-2.5 wt%Nb alloy is a typical pressure tube material in heavy water nuclear reactors [1][2][3] due to its excellent thermal conductivity and thermal stability, low thermal neutron absorption cross-section, and good creep behavior. [4][5][6][7] However, the performance deterioration of the Zr-2.5 wt% Nb alloy pressure tube under the effect of hydrogen isotopes 3,[8][9][10][11] (hydrogen embrittlement, hydrogen induced delayed cracking, etc.) is a critical concern in the nuclear industrial system.…”
Section: Introductionmentioning
confidence: 99%
“…Some of this hydrogen enters the metal to form hydrides which adversely change properties like the fracture toughness. Delayed hydride cracking can occur if sharp flaws, cuts, and nicks suffered during operation coincide with regions under tensile stresses [4][5][6]. Optical micrographs taken in these pressure tubes show that the size of hydrides close to the metal-oxide interface can be smaller than in the bulk [7,8].…”
Section: Introductionmentioning
confidence: 99%
“…Some of this hydrogen enters the metal which adversely changes its properties like the fracture toughness. Delayed hydride cracking can also occur if sharp flaws, cuts, and nicks suffered during operation coincide with regions under tensile stresses [4][5][6]. Hence, the hydride content in these pressure tubes are continuously monitored through scrape samples taken from their surfaces.…”
Section: Introductionmentioning
confidence: 99%