Effects of surface nanocrystallization on the corrosion behaviors of 316L and alloy 690

Li, Nana; Shi, San-Qiang; Luo, Jing‐Li; Lü, Jian; Wang, N.

doi:10.1016/j.surfcoat.2016.11.052

Cited by 47 publications

(22 citation statements)

References 31 publications

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“…XRD analysis of the nitrided 316L with SMAT showed no martensitic phase or other impurities in the SMAT sample 20 . Residual stress was measured on the specimen before and after SMAT using XRD.…”

Section: Resultsmentioning

confidence: 91%

“…However, nanocrystalline materials are associated with a high-volume fraction of the grain boundary and a large number of structural defects 15 – 17 , leading to a significant increase in stored energy which may increase reactivity and accelerate corrosion by forming a large number of micro-electrochemical cells between the grain boundaries and the matrix according to the classic corrosion theory 18 , 19 . A previous study 20 also shows that the SMAT process leads to significant residual stress at the surface and degradation of the corrosion resistance of 316L at room temperature.…”

Section: Introductionmentioning

confidence: 79%

“…It could be concluded that the duplex surface treatment improved the passive film stability and corrosion resistance. The corrosion behavior of metallic materials can be strongly affected by the chemical composition and electronic states of the surface layer 20 . The mechanism of passivation on 316L will be different at high temperature comparing with that at room temperature, since the oxidation rate increases dramatically with increasing temperature.…”

Section: Resultsmentioning

confidence: 99%

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The effect of duplex Surface mechanical attrition and nitriding treatment on corrosion resistance of stainless steel 316L

Wang²

2018

Sci Rep

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Surface mechanical attrition treatment (SMAT) fabricates a nanostructured layer on the surface of 316L that possesses excellent mechanical properties. In this paper a duplex process combining SMAT with nitriding was performed, then the microstructure, hardness and corrosion properties of the treated materials were investigated by using X-ray diffraction (XRD), transmission electron microscopy (TEM), hardness tests, potentiodynamic polarization measurements, X-ray photoelectron spectroscopy (XPS) and secondary ion mass spectrometry (SIMS). The results showed that this duplex surface treatment can effectively increase the hardness and corrosion resistance of the treated surface both at room temperature and in the simulated steam generator (SG) condition at high temperature and high pressure.

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Section: Resultsmentioning

confidence: 91%

Section: Introductionmentioning

confidence: 79%

Section: Resultsmentioning

confidence: 99%

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The effect of duplex Surface mechanical attrition and nitriding treatment on corrosion resistance of stainless steel 316L

Wang²

2018

Sci Rep

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“…Compared with uniform corrosion, localized corrosion (for example, pitting corrosion, intergranular corrosion (IGC), and crevice corrosion) is more common and detrimental to aluminum alloy components [6]. Therefore, the corrosion prevention is essential and is ordinarily achieved via diverse types of coatings [3,[7][8][9][10] or under conditions where mechanical and microstructural improvements are required, with different surface treatment technologies [11][12][13].…”

Section: Introductionmentioning

confidence: 99%

Effects of Ultrasonic Surface Rolling on the Localized Corrosion Behavior of 7B50-T7751 Aluminum Alloy

Liu

Zhang

et al. 2020

Materials

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The effects of an ultrasonic surface rolling process (USRP) on the localized corrosion behavior of 7B50-T7751 aluminum alloy in a sodium chloride + hydrogen peroxide solution were investigated through microstructural observation, immersion testing, and electrochemical measurements. The results revealed that this alloy is prone to pitting. However, the localized corrosion resistance can be significantly improved via both one-pass USRP and 12-pass USRP treatment. Furthermore, in the test solution, the thickness and the acceptor density of the passivation film were affected by the USRP treatment. The improved corrosion resistance of one-pass USRP-treated samples resulted mainly from the introduced compressive residual stress. However, this stress played a secondary role in the considerable enhancement observed for the corrosion resistance of the 12-pass USRP-treated samples. This enhancement is attributed primarily to the nanocrystalline surface and homogeneous surface microstructure induced by the multiple-pass USRP treatment.

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“…15,[20][21][22][23][24][25][26][27] However, it is still controversial whether SMAT treatment enhances or diminishes the corrosion performance of the treated materials. Hao * Electrochemical Society Member.…”

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confidence: 99%

Enhanced Pitting Corrosion Resistance of 304 SS in 3.5 wt% NaCl by Ultrasonic Nanocrystal Surface Modification

Ren

Dong

et al. 2017

J. Electrochem. Soc.

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Surface nanocrystallization has been shown to increase corrosion resistance of metallic materials. Ultrasonic nanocrystal surface modification (UNSM) is a recently developed method, which utilizes low amplitude ultrasonic frequency vibrations superimposed on a static load to induce high strain rate plastic deformation on a material surface for grain refinement. The present work investigates the effective depth of the severe plastic deformation layer by UNSM treatment, identifies the microstructure change and phase transformation within this layer, and correlates them with the enhanced pitting corrosion resistance of 304 SS in 3.5 wt% NaCl solution.

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Effects of surface nanocrystallization on the corrosion behaviors of 316L and alloy 690

Cited by 47 publications

References 31 publications

The effect of duplex Surface mechanical attrition and nitriding treatment on corrosion resistance of stainless steel 316L

The effect of duplex Surface mechanical attrition and nitriding treatment on corrosion resistance of stainless steel 316L

Effects of Ultrasonic Surface Rolling on the Localized Corrosion Behavior of 7B50-T7751 Aluminum Alloy

Enhanced Pitting Corrosion Resistance of 304 SS in 3.5 wt% NaCl by Ultrasonic Nanocrystal Surface Modification

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