Effect of thermal aging on corrosion behavior of type 316H stainless steel in molten chloride salt

Li, Xiaoli; Chang, Litao; Liu, Chengpeng; Leng, Bin; Ye, Xiang‐Xi; Han, Fenfen; Yang, Xinmei

doi:10.1016/j.corsci.2021.109784

Cited by 25 publications

(8 citation statements)

References 33 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The nucleation and propagation of creep cracks were found to be closely related to the precipitation of intergranular carbides at the temperature of the molten salt service condition 15,26,27 . Moreover, the scale and distribution of intergranular precipitates were important factors in determining the corrosion characteristics of molten-salt-resistant structural materials 28,29 . Therefore, in an evaluation system, it is important to consider the influence of the service load on the corrosion-related structural integrity and service life of moltensalt-resistant structural materials.…”

Section: Introductionmentioning

confidence: 99%

Stress-assisted corrosion behaviour of Hastelloy N in FLiNaK molten salt environment

Zhang

et al. 2022

npj Mater Degrad

View full text Add to dashboard Cite

The use of molten-salt–based energy production and storage systems requires high-temperature corrosion- and creep-resistant structural materials. This study investigated the microstructure evolution and corrosion characteristics of Hastelloy N under working stress in a molten salt environment. Selective diffusion of Cr at the grain boundaries (GBs) of the Hastelloy N degraded the properties of the GBs, making them preferred locations for corrosion crack invasion. Stress further promoted Cr diffusion and accelerated GB carbide precipitation, thereby forming a corrosion couple between the carbide and matrix that facilitated the expansion of intergranular corrosion cracks into the grains. These findings are useful for providing advances in the design of novel structural alloys with extraordinary property-microstructure stability combinations for resistant to complex molten salt environments.

show abstract

Section: Introductionmentioning

confidence: 99%

Stress-assisted corrosion behaviour of Hastelloy N in FLiNaK molten salt environment

Zhang

et al. 2022

npj Mater Degrad

View full text Add to dashboard Cite

show abstract

“…132 Each image in this panel was reproduced with permission from its respective journal. 132,185,189,203,219 Ta-Mo-Cr-Ti-Al RHEA for a wide temperature range between 1273 and 1773 K. The moderate weight gains indicate good protectiveness of the complex CrTaO 4 scale at temperatures up to ∆T ≈ 400 K higher than those acceptable for state-of-theart Ni-based superalloys. 205 To simulate reentry conditions, including thermal shock resistance, less expensive oxyacetylene torch tests [206][207][208] and more expensive arc jet tests in a temperature range between 1373 K (simulating hypersonic flights at Mach 6) and beyond 2273 K are carried out; [201][202][203] see Figure 3d representing a test of a ZrB 2 /SiC-based composite, coated with Mo-Si-B, tested at NASA's HyMETS test facility.…”

Section: Gaseous Corrosionmentioning

confidence: 92%

“…[185][186][187] As an example, stainless steels 310 and 316, or Ni-base alloys such as Haynes 230, IN 600, or IN 625 suffer huge material losses ranging from 200 to 1700 µm/year along with extensive Cr leaching at 973 K that make them clearly unacceptable for these environments (Figure 3b). [185][186][187][188][189] Such behavior is perhaps ironic, as high-Cr alloys are commonplace in corrosion-resistant alloys in most oxide-forming environments where nanoscopic films of Cr 2 O 3 protect the underlying alloy from further degradation. Similar responses have been observed in FLiNaK and FLiBe chemistries considered for molten salt cooled nuclear reactor designs, driving similar research efforts to identify and engineer new materials to withstand those related environments.…”

Section: Molten Salt Corrosionmentioning

confidence: 99%

“…(a) A typical setup for molten salt corrosion testing at elevated temperatures with suspended coupon samples 185. (b) Energy-dispersive x-ray spectroscopy (EDS) analysis of extensive Cr leaching from a 316H stainless steel after salt corrosion (NaCl-KCl-MgCl 2 ) at 973 K for 400 h 189. (c) Continuous weight change curves of an equimolar Ta-Mo-Cr-Ti-Al RHEA in laboratory air between 1273 and 1773 K 203.…”

mentioning

confidence: 99%

“…(g) Experimental setup for deuterium charging of atom probe tomography (APT) specimens and cryogenic preservation132 and (h) corresponding APT atom map of deuterium segregation to transgranular carbides on dislocations 132. Each image in this panel was reproduced with permission from its respective journal 132,185,189,203,219.…”

mentioning

confidence: 99%

See 2 more Smart Citations

Materials properties characterization in the most extreme environments

et al. 2022

View full text Add to dashboard Cite

There is an ever-increasing need for material systems to operate in the most extreme environments encountered in space exploration, energy production, and propulsion systems. To effectively design materials to reliably operate in extreme environments, we need an array of tools to both sustain lab-scale extreme conditions and then probe the materials properties across a variety of length and time scales. Within this article, we examine the state-of-the-art experimental systems for testing materials under extreme environments and highlight the limitations of these approaches. We focus on three areas: (1) extreme temperatures, (2) extreme mechanical testing, and (3) chemically hostile environments. Within these areas, we identify six opportunities for instrument and technique development that are poised to dramatically impact the further understanding and development of next-generation materials for extreme environments. Graphical abstract

show abstract

Corrosion behavior of Ni–25Cr–10Fe–3Si–xMo alloys beneath KCl–ZnCl₂ deposits at 650°C: Role of long‐term aging

Jia,

Xu,

Wang

et al. 2024

Materials & Corrosion

View full text Add to dashboard Cite

The corrosion behavior of unaged and thermally aged Ni–25Cr–10Fe–3Si–xMo (x = 0, 3 wt%) alloys was studied beneath KCl–ZnCl2 deposits at 650°C. The results indicated that the addition of Mo promoted the formation of a continuous Si‐rich protective layer and improved the corrosion performance of the unaged Ni–25Cr–10Fe–3Si–xMo alloys. The precipitates formed after long‐term aging greatly affect the corrosion resistance of the thermally aged alloys. The M23C6 along the grain boundaries is beneficial to improve corrosion resistance, however, the dispersed Laves phase and Sigma deteriorate corrosion resistance.

show abstract

Effect of thermal aging on corrosion behavior of type 316H stainless steel in molten chloride salt

Cited by 25 publications

References 33 publications

Stress-assisted corrosion behaviour of Hastelloy N in FLiNaK molten salt environment

Stress-assisted corrosion behaviour of Hastelloy N in FLiNaK molten salt environment

Materials properties characterization in the most extreme environments

Corrosion behavior of Ni–25Cr–10Fe–3Si–xMo alloys beneath KCl–ZnCl₂ deposits at 650°C: Role of long‐term aging

Contact Info

Product

Resources

About

Effect of thermal aging on corrosion behavior of type 316H stainless steel in molten chloride salt

Cited by 25 publications

References 33 publications

Stress-assisted corrosion behaviour of Hastelloy N in FLiNaK molten salt environment

Stress-assisted corrosion behaviour of Hastelloy N in FLiNaK molten salt environment

Materials properties characterization in the most extreme environments

Corrosion behavior of Ni–25Cr–10Fe–3Si–xMo alloys beneath KCl–ZnCl2 deposits at 650°C: Role of long‐term aging

Contact Info

Product

Resources

About

Corrosion behavior of Ni–25Cr–10Fe–3Si–xMo alloys beneath KCl–ZnCl₂ deposits at 650°C: Role of long‐term aging