Effect of Gadolinium Addition on Microstructure, Mechanical Properties and Corrosion Resistance of 316L Austenitic Stainless Steels

Wang, H.; Wang, T.; Peng, Jun

doi:10.1134/s0031918x21140246

Cited by 12 publications

(4 citation statements)

References 18 publications

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“…However, DuPont et al [ 100 ] discovered that the presence of this intermetallic phase in stainless steels posed challenges for both weldability and hot rolling process. Wang et al [ 101 ] found that the Gd-rich phases with an average size of ≤3 μm were uniformly dispersed at ≤1.5 wt%Gd/316L steel after hot rolling. As Gd concentration increased to 2 wt%, some Gd-rich phases coarsened to ~6 μm and agglomerated, which had a detrimental effect on its corrosion resistance.…”

Section: Gd-containing Metallic Neutron Shielding Materialsmentioning

confidence: 99%

“…Figure 9 presents the mechanical properties of the reported Fe-based Gd-containing neutron shielding materials [ 94 , 95 , 101 , 104 , 105 , 106 ]. Herein, the Fe-based alloys/composites have exhibited high tensile strength and/or elongation, which are promising for use as structural-functional integrated materials.…”

Section: Gd-containing Metallic Neutron Shielding Materialsmentioning

confidence: 99%

“… Mechanical properties of reported Gd-containing Fe-based neutron shielding materials, including: 1 wt%Gd/DSS (Hot rolled) [ 94 ], 0.087 wt%Gd/DSS (Cold rolled) [ 95 ], 0.5 wt%Gd/316L (Hot rolled) [ 101 ], 1.5 wt%Gd 2 O 3 /316L [ 104 ], 1 wt%Gd/316L [ 105 ], 1.5 wt%Gd/316L (Hot rolled) [ 106 ]. …”

Section: Figurementioning

confidence: 99%

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Recent Progress in Gd-Containing Materials for Neutron Shielding Applications: A Review

Wang

Yang

et al. 2023

Materials

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With the rising demand for nuclear energy, the storage/transportation of radioactive nuclear by-products are critical safety issues for humans and the environment. These by-products are closely related to various nuclear radiations. In particular, neutron radiation requires specific protection by neutron shielding materials due to its high penetrating ability to cause irradiation damage. Herein, a basic overview of neutron shielding is presented. Since gadolinium (Gd) has the largest thermal neutron capture cross-section among various neutron absorbing elements, it is an ideal neutron absorber for shielding applications. In the last two decades, there have been many newly developed Gd-containing (i.e., inorganic nonmetallic-based, polymer-based, and metallic-based) shielding materials developed to attenuate and absorb the incident neutrons. On this basis, we present a comprehensive review of the design, processing methods, microstructure characteristics, mechanical properties, and neutron shielding performance of these materials in each category. Furthermore, current challenges for the development and application of shielding materials are discussed. Finally, the potential research directions are highlighted in this rapidly developing field.

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Section: Gd-containing Metallic Neutron Shielding Materialsmentioning

confidence: 99%

Section: Gd-containing Metallic Neutron Shielding Materialsmentioning

confidence: 99%

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Recent Progress in Gd-Containing Materials for Neutron Shielding Applications: A Review

Wang

Yang

et al. 2023

Materials

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“…Stainless steels (SSs) and nickel-based alloys are well regarded for their formidable mechanical strength and robust corrosion resistance. As a result, there has been considerable exploration into the amalgamation of Gd with various materials, including nickel-based alloys [15,16], austenitic stainless steels [17][18][19], and duplex stainless steels (DSSs) [20,21]. These alloys demonstrate promise in terms of reactivity control and structural functionality, albeit at the expense of reduced toughness and ductility owing to the formation of Gd-rich precipitated intermetallics.…”

Section: Introductionmentioning

confidence: 99%

Characterization of Various Stainless Steels Containing Gadolinium as Thermal Neutron Absorbing and Shielding Materials

Oh,

Ahn,

Jung

et al. 2023

Metals

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Developing next-generation thermal-neutron-shielding and -absorbing materials for the safe storage and transportation of spent nuclear fuel is a topic of active research in academia. Gadolinium (Gd) boasts superior neutron absorption capacity compared with other nuclei. Consequently, it has garnered significant attention as a potential replacement for boron in spent nuclear fuel (SNF) applications. In this study, the austenitic stainless steels 304 and 316 and the duplex stainless steel 5A were reinforced with 2 wt.% of gadolinium to explore their thermal-neutron-absorbing efficiency. Their properties were then compared with commercial-grade borated stainless steel, as per ASTM standard A887. After the inclusion of Gd, both the yield strength and ultimate tensile strength of the alloys slightly increased, which was attributed to the evenly distributed Gd intermetallics within the matrix. However, the elongation rate was reduced. The Charpy impact absorption energy also decreased. The influence of the Gd intermetallic was further explored by examining the fractography. While the corrosion resistance of the alloy slightly diminished after the addition of Gd, its neutron absorption capacity demonstrated superior performance, especially when the Gd content was equivalent to that of boron. Although most properties of the experimental alloy deteriorated after the Gd addition, they still outperformed commercial borated stainless steel, suggesting that this alloy might be a promising candidate for SNF applications.

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Corrosion behavior of neutron absorbing Ti-Gd alloys in simulated spent nuclear fuel pool water

2022

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Effect of Gadolinium Addition on Microstructure, Mechanical Properties and Corrosion Resistance of 316L Austenitic Stainless Steels

Cited by 12 publications

References 18 publications

Recent Progress in Gd-Containing Materials for Neutron Shielding Applications: A Review

Recent Progress in Gd-Containing Materials for Neutron Shielding Applications: A Review

Characterization of Various Stainless Steels Containing Gadolinium as Thermal Neutron Absorbing and Shielding Materials

Corrosion behavior of neutron absorbing Ti-Gd alloys in simulated spent nuclear fuel pool water

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