Effect of Phosphorus Content on Hydrogen Embrittlement for High Strength Steel Treated with Electroless Ni–P Plating

Hino, Makoto; Doi, Yuho; Kuwano, Ryoichi; Oda, Yukinori; Horikawa, Keitaro

doi:10.2320/matertrans.mt-m2020282

Cited by 14 publications

(8 citation statements)

References 8 publications

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“…9) The effect of hydrogen embrittlement of the electroless NiP plating with different phosphorus contents on high-strength steels was investigated using three-point bending slow strain rate tensile tests. 13) It was found that the degree of hydrogen embrittlement of the low-phosphorus type was lower than that of the medium-and high-phosphorus types, which is consistent with the fatigue test results in this study.…”

Section: Fatigue Propertiessupporting

confidence: 90%

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Fatigue Property of Electroless Ni–P Plated A7075-T6511 Alloy Affected by Plated Film Composition

et al. 2022

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In this study, with the aim of improving the fatigue characteristics of the A7075 aluminum alloy, A7075-T6511 alloy rod specimens were plated with electroless NiP with different compositions, and the fatigue characteristics were evaluated by a rotary bending fatigue test. The fatigue strength of the specimen plated with low-P type was higher than that of the un-plated specimen. However, the fatigue strength of the specimen plated with high-P type was significantly lower than that of the un-plated specimen, and the fatigue strength of the specimen plated with medium-P type was also lower though the extent was not so significant. It was speculated that these reductions in fatigue strength were due to hydrogen embrittlement by the hydrogen introduced into the specimen during the plating.

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Section: Fatigue Propertiessupporting

confidence: 90%

“…It has been shown in previous experiments that the hydrogen content of each electroless NiP plating becomes almost constant after 14 days from the end of plating. 13) Thus, all specimens were left in the desiccator for more than 14 days after the end of plating before the experiments.…”

Section: Methodsmentioning

confidence: 99%

Fatigue Property of Electroless Ni–P Plated A7075-T6511 Alloy Affected by Plated Film Composition

et al. 2022

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“…It has been found that hydrogen diffuses and is released from the aluminum substrate through the coating, and the amount of hydrogen decreases with time after plating. 5) Because the hydrogen content of each electroless NiP plating becomes almost constant after 14 days from the end of plating, all the specimens were left in the desiccator for more than 14 days after the end of plating for the experiment.…”

Section: +1mentioning

confidence: 99%

“…3) The authors previously investigated the hydrogen-embrittlement behavior of electroless NiP plating 4) with different phosphorus contents in high-strength steel and reported that electroless NiP plating induced hydrogen embrittlement. 5) In addition, the hydrogen-embrittlement rate was found to vary with the phosphorus content in the coating. 5) On the other hand, there are few cases where hydrogen embrittlement by plating on aluminum alloys has been investigated.…”

Section: Introductionmentioning

confidence: 98%

“…5) In addition, the hydrogen-embrittlement rate was found to vary with the phosphorus content in the coating. 5) On the other hand, there are few cases where hydrogen embrittlement by plating on aluminum alloys has been investigated. In particular, the 2000 series alloy (AlCu), which is the subject of this study, has been reported to have a low hydrogen-embrittlement rate in slow strain rate testing (SSRT) under wet conditions.…”

Section: Introductionmentioning

confidence: 98%

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Effect of Electroless Ni–P Plating on Rotary Bending Fatigue Strength of A2017-T4 Aluminum Alloy

et al. 2022

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In this study, A2017-T4 aluminum alloy was plated with electroless NiP with different phosphorus content and rotary bending fatigue test was conducted to investigate the effect of hydrogen by plating on fatigue properties. The fatigue strength of the low-phosphorus type NiP plated specimen was higher than that of the untreated specimen, while that of the high-phosphorus type plated specimen was much lower. It is clear that the fatigue strength differs greatly depending on the phosphorus content in the plating film. The decrease in fatigue strength of the high phosphorus type plating specimen was attributed to hydrogen induced by plating from hydrogen analysis. Thus, despite the previous report that 2000 series aluminum alloys do not exhibit hydrogen embrittlement in slow strain rate tensile tests under wet condition, it was found that A2017-T4 aluminum alloy undergo hydrogen embrittlement when the alloy is plated with high-phosphorus type electroless NiP and fatiguetested on rotary bending machine.

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Effect of plating time on surface morphology and corrosion behavior of electroless Ni-P coating in simulated concrete pore solution

Meng,

Zhao,

Zhong

et al. 2024

Case Studies in Construction Materials

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Effect of Phosphorus Content on Hydrogen Embrittlement for High Strength Steel Treated with Electroless Ni–P Plating

Cited by 14 publications

References 8 publications

Fatigue Property of Electroless Ni–P Plated A7075-T6511 Alloy Affected by Plated Film Composition

Fatigue Property of Electroless Ni–P Plated A7075-T6511 Alloy Affected by Plated Film Composition

Effect of Electroless Ni–P Plating on Rotary Bending Fatigue Strength of A2017-T4 Aluminum Alloy

Effect of plating time on surface morphology and corrosion behavior of electroless Ni-P coating in simulated concrete pore solution

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