The effect of cold-rolling on the microstructure and corrosion behaviour of 316L alloy in FLiNaK molten salt

Maric, M.; Muránsky, Ondrej; Karatchevtseva, Inna; Ungár, Tamás; Hester, James; Studer, Andrew J.; Scales, Nicholas; Ribárik, Gabor; Primig, Sophie; Hill, Michael R.

doi:10.1016/j.corsci.2018.07.006

Cited by 46 publications

(13 citation statements)

References 46 publications

(60 reference statements)

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The regions with crystal defects will be high in stored energies and more likely to be accelerated in corrosion. Therefore, pitting is more concentrated in this region [37]. After annealing, the S V of dislocation boundaries and tangled dislocations between dislocation boundaries decrease.…”

Section: Resultsmentioning

confidence: 99%

Effect of Recrystallization Annealing on Corrosion Behavior of Ta-4%W Alloy

Luo

et al. 2018

Materials

View full text Add to dashboard Cite

The effect of recrystallization annealing on corrosion behavior of Ta-4%W alloy was studied. It is found that the deformed sample contains high dense dislocations and dislocation boundaries. During annealing, these dislocations and dislocation boundaries are replaced by recrystallizing grains until the alloy is fully recrystallized. Both the anodic dissolution and the cathodic activity is much more blocked. The corrosion potential gradual shift towards negative values and corrosion current density decrease, while polarization resistance increases after annealing, indicating enhanced corrosion resistance of the alloy. Such an enhancement is caused by the increase of low-Σ coincide site lattice boundaries and decrease of dislocations and dislocation boundaries.

show abstract

Section: Resultsmentioning

confidence: 99%

Effect of Recrystallization Annealing on Corrosion Behavior of Ta-4%W Alloy

Luo

et al. 2018

Materials

View full text Add to dashboard Cite

show abstract

“…The accumulation of dislocations at grain boundaries results in high dislocation energy. Corrosion is directly related to the increased prevalence of grain boundaries and dislocations in the microstructure [31]. more than half of the grains are smaller than 5 μm in size and a small number of grains are over 15 μm in size.…”

Section: Microstructurementioning

confidence: 99%

“…The accumulation of dislocations at grain boundaries results in high dislocation energy. Corrosion is directly related to the increased prevalence of grain boundaries and dislocations in the microstructure [31]. The samples are analyzed by SEM and EDS in the direction perpendicular to TD, as shown in Figure 4.…”

Section: Microstructurementioning

confidence: 99%

Effect of Corrosive Medium and Surface Defect-Energy on Corrosion Behavior of Rolled ZK61M Alloy

et al. 2022

View full text Add to dashboard Cite

Magnesium alloys have been widely used as lightweight engineering structural materials, but their service performances are severely restricted by corrosion failure. In this paper, the influence of corrosive medium and surface defect energy on the corrosion behavior of rolled ZK61M alloy was investigated. The corrosion tests were conducted in different concentrations of sodium chloride solution for different durations, and the polarization curves and electrochemical impedance spectroscopy were reported. The surface morphology of rolled ZK61M alloy before and after corrosion tests were analyzed. The results showed that the corrosion tendency became stronger with the increase of the concentration of corrosive medium and the number of surface defects of ZK61M alloy. Moreover, the initial corrosion pattern was the pitting caused by micro galvanic corrosion at the surface defect, which gradually developed into uniform corrosion. Furthermore, the main damage occurred at the grain boundary, resulting in the destruction of grain bonding force and the removal of material along the rheological layer. The oxidation corrosion mechanism was mainly the anodic dissolution mechanism.

show abstract

“…Hartley (1970) advocates that alloying elements preferentially migrate to grain boundary along with dislocation due to the established interaction energy gradient between alloying elements and dislocation. Meanwhile, due to the increased prevalence of diffusion pathways like dislocation or grain boundaries, alloying elements can easily interact with solution salt components to form more stable corrosion products (Maric et al, 2018). Therefore, due to the presence of high-density dislocation accumulation, dislocation entanglement, bending, and phase precipitation, SLM produced CoCrFeMnNi alloys are more vulnerable to corrosion.…”

Section: Comparison Of Cast Sample and Slm Printed Samplementioning

confidence: 99%

Corrosion Behavior of an Equiatomic CoCrFeMnNi High-Entropy Alloy- a Comparison Between Selective Laser Melting and Cast

Peng

Lin

et al. 2020

Front. Mater.

View full text Add to dashboard Cite

The corrosion behaviors of equiatomic CoCrFeMnNi high-entropy alloys (HEAs) were comparatively investigated between selective laser melting (SLM) and casting. The cast sample shows better corrosion resistance in 3.5 wt.% NaCl solution than the SLM printed sample due to the higher density of dislocations, pores, and cracks in SLM samples, which significantly reduces their corrosion resistance. Furthermore, it is found that the corrosion resistance is different between the planes parallel and perpendicular to the building direction of SLM sample because of the differences in grain orientation, grain size, and surface morphology. Electrochemical anode dissolution rates of the SLM printed CoCrFeMnNi HEAs on their planes parallel and perpendicular to the building direction are calculated and the results show that the pores and cracks dominate the corrosion resistance rather than the grain boundary and the grain orientation.

show abstract

The effect of cold-rolling on the microstructure and corrosion behaviour of 316L alloy in FLiNaK molten salt

Cited by 46 publications

References 46 publications

Effect of Recrystallization Annealing on Corrosion Behavior of Ta-4%W Alloy

Effect of Recrystallization Annealing on Corrosion Behavior of Ta-4%W Alloy

Effect of Corrosive Medium and Surface Defect-Energy on Corrosion Behavior of Rolled ZK61M Alloy

Corrosion Behavior of an Equiatomic CoCrFeMnNi High-Entropy Alloy- a Comparison Between Selective Laser Melting and Cast

Contact Info

Product

Resources

About