Effect of rolling ratios on the microstructural evolution and corrosion performance of an as-rolled Mg-8 wt.%Li alloy

Wang, B.J.; Xu, Dong; Cai, Xin; Qiao, Yanjiang; Sheng, Liyuan

doi:10.1016/j.jma.2020.02.020

Cited by 64 publications

(29 citation statements)

References 61 publications

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“…This suggested that a higher bypass current accelerated the corrosion rate of the specimens in 3.5% NaCl solution. One reason was that sample 2# had more defects than sample 1#, and the other was that the refinement of sample 2# provided more channels for corrosion [ 24 – 28 ].…”

Section: Resultsmentioning

confidence: 99%

Microstructure and Properties of ER50-6 Steel Fabricated by Wire Arc Additive Manufacturing

Miao

Wang

et al. 2021

Scanning

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In this paper, ER50-6 steel was fabricated by wire arc additive manufacturing (WAAM) with an A-W GTAW system. The microstructure, mechanical properties, and corrosion behaviors of ER50-6 steel by WAAM were studied. The results showed that, with the GMAW current increased, from the bottom to the top of the sample, the microstructure was fine ferrite and granular pearlite, ferrite equiaxed grains with fine grains at grain boundaries, and columnar ferrite, respectively. The average hardness in the vertical direction of samples 1# and 2# was 146 and 153 HV, respectively. The hardness of sample 2# increased because of the refinement of grain. The pores in the sample increased as the bypass current increased. The higher bypass current also has a deterioration effect on the corrosion behavior of ER50-6 steel.

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Section: Resultsmentioning

confidence: 99%

Microstructure and Properties of ER50-6 Steel Fabricated by Wire Arc Additive Manufacturing

Miao

Wang

et al. 2021

Scanning

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“…On the other hand, some studies show the corrosion rate of Mg alloys can be controlled by mechanical deformation such as rolling and equal channel angular pressing, due to their influence on the grain size, internal stress, dislocation density, texture, etc. [ [40] , [41] , [42] , [43] , [44] , [45] , [46] , [47] ]. However, the results were controversial, and in some cases, grain refinement increased the corrosion rate because of the mechanical deformation and more grain boundaries.…”

Section: Introductionmentioning

confidence: 99%

Potential bioactive coating system for high-performance absorbable magnesium bone implants

Sarian

Iqbal

Sotoudehbagha

et al. 2022

Bioactive Materials

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Magnesium alloys are considered the most suitable absorbable metals for bone fracture fixation implants. The main challenge in absorbable magnesium alloys is their high corrosion/degradation rate that needs to be controlled. Various coatings have been applied to magnesium alloys to slow down their corrosion rates to match their corrosion rate to the regeneration rate of the bone fracture. In this review, a bioactive coating is proposed to slow down the corrosion rate of magnesium alloys and accelerate the bone fracture healing process. The main aim of the bioactive coatings is to enhance the direct attachment of living tissues and thereby facilitate osteoconduction. Hydroxyapatite, collagen type I, recombinant human bone morphogenetic proteins 2, simvastatin, zoledronate, and strontium are six bioactive agents that show high potential for developing a bioactive coating system for high-performance absorbable magnesium bone implants. In addition to coating, the substrate itself can be made bioactive by alloying magnesium with calcium, zinc, copper, and manganese that were found to promote bone regeneration.

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“…The characteristics of the Nyquist plots suggest that the casing steel is in an active corrosion state, and the electrode reaction is controlled by the corrosion reactant or product transfer process, which is consistent with the result of corrosion potential measurement. [ 42,43 ]…”

Section: Resultsmentioning

confidence: 99%

Experimental Investigation of CO₂‐ and Fe₃O₄‐Assisted Corrosion at the Cement–Casing Interface

Wang

et al. 2022

steel research int.

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In this study, CO 2 -and Fe 3 O 4 -assisted corrosion of the cement-casing interface for the magnetite (Fe 3 O 4 ) high-density cement-casing steel system in simulated formation water is investigated under the normal and high CO 2 pressure conditions. Results show that the degradation of the cement-casing interface is affected by the competition of cement hydration and CO 2 corrosion. The migration of CO 2 and corrosive species to the cement-casing interface is facilitated under the high pressure condition, resulting in enhanced corrosion rate as compared to the normal pressure condition. The casing steel is in active corrosion state while the corrosion rate gradually increases with time. After long term of immersion, a layer of thick corrosion products with multiple cracks/ microgaps forms at the cement-casing interface, which can hardly protect the casing steel from further corrosion. The corrosion products on the steel surface are mainly FeCO 3 accompanied by a small amount of CaCO 3 and Fe 3 O 4 , suggesting the prevalence of CO 2 corrosion. The mechanism of the CO 2 -and Fe 3 O 4 -facilitated corrosion of the cement-casing interface for the magnetite high-density cement-casing system is proposed.

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Effect of rolling ratios on the microstructural evolution and corrosion performance of an as-rolled Mg-8 wt.%Li alloy

Cited by 64 publications

References 61 publications

Microstructure and Properties of ER50-6 Steel Fabricated by Wire Arc Additive Manufacturing

Microstructure and Properties of ER50-6 Steel Fabricated by Wire Arc Additive Manufacturing

Potential bioactive coating system for high-performance absorbable magnesium bone implants

Experimental Investigation of CO₂‐ and Fe₃O₄‐Assisted Corrosion at the Cement–Casing Interface

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Effect of rolling ratios on the microstructural evolution and corrosion performance of an as-rolled Mg-8 wt.%Li alloy

Cited by 64 publications

References 61 publications

Microstructure and Properties of ER50-6 Steel Fabricated by Wire Arc Additive Manufacturing

Microstructure and Properties of ER50-6 Steel Fabricated by Wire Arc Additive Manufacturing

Potential bioactive coating system for high-performance absorbable magnesium bone implants

Experimental Investigation of CO2‐ and Fe3O4‐Assisted Corrosion at the Cement–Casing Interface

Contact Info

Product

Resources

About

Effect of rolling ratios on the microstructural evolution and corrosion performance of an as-rolled Mg-8 wt.%Li alloy

Experimental Investigation of CO₂‐ and Fe₃O₄‐Assisted Corrosion at the Cement–Casing Interface