Experimental study on mechanical properties of steel under extreme cyclic loading considering pitting damage

Ma, Houbiao; Yang, Yang; He, Zheng; Zhang, Yahui; Ji, Fei

doi:10.1016/j.oceaneng.2019.05.073

Cited by 19 publications

(3 citation statements)

References 28 publications

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“…As national offshore oil and gas development is gradually moving towards the deep water area, the thickness, quality, and construction difficulty of the plate used in offshore engineering structural steel are increasing [4,5,6,7]. Simultaneously, the marine deep water area environment is complex, and usual iron and steel materials have been unable to meet the needs of use [8,9]. Laser cladding ceramic particle reinforced metal-based composite coating has the advantages of high strength, high hardness, high wear resistance, and high corrosion resistance, which is an effective way to solve the failure of materials in complex environment [10,11,12].…”

Section: Introductionmentioning

confidence: 99%

Effect of CeO2 on Impact Toughness and Corrosion Resistance of WC Reinforced Al-Based Coating by Laser Cladding

2019

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WC reinforced Al-based coating with added CeO2 was prepared on the surface of S420 steel by laser cladding. The microstructure and structure of the coatings were analyzed by scanning electron microscope, X-ray diffractometer and optical profiler. The mechanical properties and corrosion properties of the coatings were studied by microhardness tester, friction and wear tester, Charpy impact tester, and electrochemical workstation. The results show that the coating is mainly composed of Al-phase, continuous-phase, and hard reinforced-phase WC, and the coating and substrate show good metallurgical bonding. When the content of CeO2 is 1%, the fine grain strengthening effect is obvious, and the impact toughness of the coating is obviously improved. Appropriate amount of rare earth CeO2 can significantly improve the hardness of the coating. When the content of CeO2 is more than 1%, the wear resistance of the coating decreases. The coating prepared with different CeO2 content has higher impedance and corrosion resistance than that of the substrate. At 1% CeO2 content, the coating has the best corrosion resistance.

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Section: Introductionmentioning

confidence: 99%

Effect of CeO2 on Impact Toughness and Corrosion Resistance of WC Reinforced Al-Based Coating by Laser Cladding

2019

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“…The results showed that the total elongation of corroded welded joints shows a more significant linear decline trend than the ultimate strength. Ma et al (2019) studied the mechanical properties of highstrength steel under the action of pitting damage, and they observed that the yield strength and ultimate strength of the steel degrade as the pitting volume loss rate increases. They also concluded that cyclic loading can strengthen the cyclic stress and strain of the steel, but pitting damage leads to degradation of the cyclic stress and strain of the steel.…”

Section: Mechanical Propertiesmentioning

confidence: 99%

Review of Ultimate Strength Assessment of Ageing and Damaged Ship Structures

Tekgoz

Garbatov

Soares

2020

J. Marine. Sci. Appl.

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The objective of this work is to provide an overview of the ultimate strength assessment of ageing and damaged ship structures in the last decades. Particular attention is paid to the ultimate strength of plates, stiffened panels, box girders, and entire ship hull structures subjected to corrosion degradation, fatigue cracking, and mechanical damage caused by accidental loading or impact. A discussion on the effect of the cyclic load on the plate rigidity, re-yielding, and ultimate load capacity on the ship hull girder is also part of the present study. Finally, some conclusions and discussions about potential future work are provided, identifying that more studies about the impact of corrosion degradation on the structural behaviour of the stiffened panels and the overall hull girders are needed. Studies related to the dynamic collapse behaviour of corroded and damaged ship structures under time-variant load also requires additional attention.

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“…1(b)). Ma [9] investigated the effect of pitting corrosion by using galvanic accelerated corrosion on the seismic performance of NV-D36 steel, as shown in Fig. 1(c).…”

Section: Introductionmentioning

confidence: 99%

Mechanical Behaviour of Corroded Structural Steel Subjected to Monotonic Tension

2022

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This study aims to investigate the mechanical properties of corroded structural steel under monotonic tensile loading. First, structural steel coupons with various corrosion degrees were produced by electrolytic accelerated corrosion using a particular etchant solution proposed by the authors. Second, the corroded morphologies of the specimens were observed through a morphology scanner; then, the mechanical properties were examined by monotonic tensile loading tests. An analytical model on the relationship between mass loss and surface morphology with the mechanical properties of corroded structural steel was established. Finally, a numerical simulation method was proposed on the mechanical behaviour of corroded structural steel based on random rough surface theory. The finite element was consistent with experimental tests, which indicates the feasibility and accuracy of the proposed simulation method.

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Experimental study on mechanical properties of steel under extreme cyclic loading considering pitting damage

Cited by 19 publications

References 28 publications

Effect of CeO2 on Impact Toughness and Corrosion Resistance of WC Reinforced Al-Based Coating by Laser Cladding

Effect of CeO2 on Impact Toughness and Corrosion Resistance of WC Reinforced Al-Based Coating by Laser Cladding

Review of Ultimate Strength Assessment of Ageing and Damaged Ship Structures

Mechanical Behaviour of Corroded Structural Steel Subjected to Monotonic Tension

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