Stress corrosion cracking failure of a SS 316L high pressure heater tube

Rao, M. Ananda; Babu, R. S.; Kumar, M. V. Pavan

doi:10.1016/j.engfailanal.2018.03.013

Cited by 34 publications

(2 citation statements)

References 12 publications

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“…According to reported statistics [1,2], 29% of anchor bolts and 25% of anchor cables in the Australian mining industries are subjected to corrosion failures, and corrosion has been recognized as one of the biggest threats to the life of anchor bolt structures buried in rock and soil layers. In addition, at external load or residual stress, stress corrosion cracking (SCC) and hydrogen embrittlement (HE) happen frequently and lead to abrupt failures [3][4][5]. Therefore, SCC and HE problems pose a serious threat to the safe service of anchor bolt structures and severely affect the development and application of anchor steels.…”

Section: Introductionmentioning

confidence: 99%

Enhancing the SCC Resistance of the Anchor Steel with Microalloying in a Simulated Mine Environment

Du,

An,

Wang

et al. 2023

Materials

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This work explored a new idea for enhancing the resistance to stress corrosion cracking (SCC) of mining anchor steel through microalloying. Microalloyed anchor steels with Nb, Cu, Ni, Sb, and C were prepared through vacuum smelting and hot rolling. Electrochemical measurements, slow strain rate tensile (SSRT) tests, and fracture morphology observations were used to study the electrochemical and SCC behavior in the simulated mine environment. The results proved that the microstructure of microalloyed steels varies slightly. Adding Ni, Cu, and Sb can improve the mechanical properties of the anchor steel, while reducing C content decreases tensile strength as a result of loss of the solution-strengthening effect. The addition of Sb, Cu, Ni, and reducing the content of C enhances the resistance to corrosion and SCC by mitigating anodic dissolution (AD), while adding Nb improves SCC resistance by inhibiting hydrogen embrittlement (HE). The combined addition of 1% Ni, 0.5% Cu, 0.05% Nb, 0.1% Sb, and 0.5% C presented the highest SCC resistance, which is a promising prospect for the development of high-performance, low-alloy anchor steels. The combined addition of 1% Ni, 0.5% Cu, 0.05% Nb, and 0.1% Sb resulted in the inhibition of electrochemical reactions and corrosion. As a result of the synergistic effect of the microalloy, both AD and HE mechanisms were simultaneously inhibited, which greatly enhanced SCC resistance.

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Section: Introductionmentioning

confidence: 99%

Enhancing the SCC Resistance of the Anchor Steel with Microalloying in a Simulated Mine Environment

Du,

An,

Wang

et al. 2023

Materials

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“…All pressure equipment can present a significant risk in the event of failure [3,4]. Researchers from the beginning of the 20 th century tried to understand how a crack could lead to the failure of components.…”

Section: Introductionmentioning

confidence: 99%

A Numerical Study of the Damage Mechanisms for CT Tensile Specimens of P265GH Steel Material

Lahlou

En-Naji²,

Mouhib³

et al. 2023

Period. Polytech. Mech. Eng.

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The aim of this paper is to determine the damage mechanisms of P265GH steel, commonly used for pressure equipment. First, an experimental study using tensile and Charpy tests allowed us to determine the mechanical properties (Young modulus E = 200 GPa, elongation ε = 35%, yield se = 320 MPa, ultimate stress su = 470 MPa, and KIC = 96 MP√m). Then, numerical finite element modeling on a CT specimen using the CASTEM calculation code allowed us to determine the damage of the material when the notch depth varies. The analysis of the results shows that the numerical values of the stress concentration coefficient Kt and the stress intensity factor KI are comparable with the analytically calculated values, thus validating our numerical study. The numerical results obtained revealed that the maximum stress σmax is located in the vicinity of the notch bottom and the high probability density corresponds to a high loading level.

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Mitigation of chloride driven stress corrosion cracking susceptibility of 316L austenitic stainless steel using plasma sprayed TiO₂ coating

Kumar

Bhadauria

Singh

2021

Materialwissenschaft Werkst

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The present study proposes a protective TiO2 coating against chloride driven stress corrosion cracking problem of 316L austenitic stainless steel. To test the performance of the proposed coating, the severe chloride‐based boiling magnesium chloride solution at 155 °C was chosen. For experimentation, the constant strain‐based U‐bend specimens were coated with TiO2 using atmospheric plasma spray method. The results indicated higher resistance by TiO2 coated specimens against stress corrosion cracking problem, while the bare specimens experienced severe damage in the boiling magnesium chloride solution under various strain loading configurations. The coating‐electrolyte system of TiO2 coated sample demonstrated over seven times higher resistance, eventually led to reduction in corrosion rate over fifteen times compared to the bare 316L stainless steel in the boiling magnesium chloride solution. This improved performance of the coated 316L stainless steel is attributed to inhibition of outward diffusion of iron‐chromium‐nickel in the corrosive environment and the high chemical stability of TiO2.

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Stress corrosion cracking failure of a SS 316L high pressure heater tube

Cited by 34 publications

References 12 publications

Enhancing the SCC Resistance of the Anchor Steel with Microalloying in a Simulated Mine Environment

Enhancing the SCC Resistance of the Anchor Steel with Microalloying in a Simulated Mine Environment

A Numerical Study of the Damage Mechanisms for CT Tensile Specimens of P265GH Steel Material

Mitigation of chloride driven stress corrosion cracking susceptibility of 316L austenitic stainless steel using plasma sprayed TiO₂ coating

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Stress corrosion cracking failure of a SS 316L high pressure heater tube

Cited by 34 publications

References 12 publications

Enhancing the SCC Resistance of the Anchor Steel with Microalloying in a Simulated Mine Environment

Enhancing the SCC Resistance of the Anchor Steel with Microalloying in a Simulated Mine Environment

A Numerical Study of the Damage Mechanisms for CT Tensile Specimens of P265GH Steel Material

Mitigation of chloride driven stress corrosion cracking susceptibility of 316L austenitic stainless steel using plasma sprayed TiO2 coating

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Mitigation of chloride driven stress corrosion cracking susceptibility of 316L austenitic stainless steel using plasma sprayed TiO₂ coating