Effects of compositional complexity on the ion-irradiation induced swelling and hardening in Ni-containing equiatomic alloys

Jin, Ke; Lu, Chenyang; Wang, L.M.; Qu, Jun; Weber, William J.; Zhang, Yongfeng; Bei, Hongbin

doi:10.1016/j.scriptamat.2016.03.030

Cited by 280 publications

(95 citation statements)

References 33 publications

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“…At the same irradiation dose (50-70 dpa), compared to other commonly-used irradiation-resistant materials, such as M316 stainless steel and pure Zr, an HEA has a relatively-low volume swelling rate [98]. Nagase et al [99] studied the in situ electron irradiation of ZrHfNb with an amorphous structure, and Jin et al [100] studied the CoCrFeNiMn with an FCC structure. It was found that the CoCrFeNiMn HEA did not change significantly after 773 K high-temperature and 3 MeV Ni ions irradiation, and the grains did not coarsen.…”

Section: Irradiation Propertymentioning

confidence: 99%

Science and technology in high-entropy alloys

2018

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As human improve their ability to fabricate materials, alloys have evolved from simple to complex compositions, accordingly improving functions and performances, promoting the advancements of human civilization. In recent years, high-entropy alloys (HEAs) have attracted tremendous attention in various fields. With multiple principal components, they inherently possess unique microstructures and many impressive properties, such as high strength and hardness, excellent corrosion resistance, thermal stability, fatigue, fracture, and irradiation resistance, in terms of which they overwhelm the traditional alloys. All these properties have endowed HEAs with many promising potential applications. An in-depth understanding of the essence of HEAs is important to further developing numerous HEAs with better properties and performance in the future. In this paper, we review the recent development of HEAs, and summarize their preparation methods, composition design, phase formation and microstructures, various properties, and modeling and simulation calculations. In addition, the future trends and prospects of HEAs are put forward.

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Section: Irradiation Propertymentioning

confidence: 99%

Science and technology in high-entropy alloys

2018

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“…Comparisons on the irradiation induced swelling up to 53 dpa have been made between Ni and a series of Ni-containing FCC SP-CSAs in single crystalline form at 500 • C using stepheight measurements (Jin et al, 2016c). Pure Ni has shown >6% overall swelling at this condition.…”

Section: Response To the Irradiations At Elevated Temperaturesmentioning

confidence: 99%

“…Note that irradiation temperature is a critical parameter for high temperature irradiation induced effects, e.g., swelling, and the temperature dependence varies with alloy compositions. The experimental studies till present primarily have focused either on one HEA at different irradiation temperatures (Kumar et al, 2016;Yang et al, 2018) or on the effects of compositional complexity at single irradiation temperature (Jin et al, 2016c;Lu et al, 2016b). How the number and species of principal alloying elements affect the temperature dependence of irradiation response in SP-CSAs requires future systematic studies.…”

Section: Response To the Irradiations At Elevated Temperaturesmentioning

confidence: 99%

Single-Phase Concentrated Solid-Solution Alloys: Bridging Intrinsic Transport Properties and Irradiation Resistance

Jin

Bei

2018

Front. Mater.

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Single-phase concentrated solid-solution alloys (SP-CSAs), including high entropy alloys (HEAs), are compositionally complex but structurally simple, and provide a playground of tailoring material properties through modifying their compositional complexity. The recent progress in understanding the compositional effects on the energy and mass transport properties in a series of face-centered-cubic SP-CSAs is the focus of this review. Relatively low electrical and thermal conductivities, as well as small separations between the interstitial and vacancy migration barriers have been generally observed, but largely depend on the alloying constituents. We further discuss the impact of such intrinsic transport properties on their irradiation response; the linkage to the delayed damage accumulation, slow defect aggregation, and suppressed irradiation induced swelling and segregation has been presented. We emphasize that the number of alloying elements may not be a critical factor on both transport properties and the defect behaviors under ion irradiations. The recent findings have stimulated novel concepts in the design of new radiation-tolerant materials, but further studies are demanded to enable predictive models that can quantitatively bridge the transport properties to the radiation damage.

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“…The complicated random arrangement of alloying elements and local chemical environment at atomic level lead SP-CSAs to exhibit extraordinary properties compared with traditional alloys, such as high thermal stability and hardness, high strength-to-weight ratio, high-temperature strength, great wear and fatigue resistance, and also excellent corrosion resistance13141516. In addition, the high-level site-to-site lattice distortions and compositional complexities in SP-CSAs can effectively reduce the mean free path of electrons, phonons and magnons; these distortions and complexities can also be used to modify formation energies, migration barriers and diffusion pathways of irradiation-induced defects, thereby modifying defect generation, interaction, interstitial–vacancy recombination in the early stages of irradiation17181920. A recently published paper indicates that equiatomic alloys may be more resistant to radiation damage than the corresponding pure elements21.…”

mentioning

confidence: 99%

Enhancing radiation tolerance by controlling defect mobility and migration pathways in multicomponent single-phase alloys

et al. 2016

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A grand challenge in material science is to understand the correlation between intrinsic properties and defect dynamics. Radiation tolerant materials are in great demand for safe operation and advancement of nuclear and aerospace systems. Unlike traditional approaches that rely on microstructural and nanoscale features to mitigate radiation damage, this study demonstrates enhancement of radiation tolerance with the suppression of void formation by two orders magnitude at elevated temperatures in equiatomic single-phase concentrated solid solution alloys, and more importantly, reveals its controlling mechanism through a detailed analysis of the depth distribution of defect clusters and an atomistic computer simulation. The enhanced swelling resistance is attributed to the tailored interstitial defect cluster motion in the alloys from a long-range one-dimensional mode to a short-range three-dimensional mode, which leads to enhanced point defect recombination. The results suggest design criteria for next generation radiation tolerant structural alloys.

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Effects of compositional complexity on the ion-irradiation induced swelling and hardening in Ni-containing equiatomic alloys

Cited by 280 publications

References 33 publications

Science and technology in high-entropy alloys

Science and technology in high-entropy alloys

Single-Phase Concentrated Solid-Solution Alloys: Bridging Intrinsic Transport Properties and Irradiation Resistance

Enhancing radiation tolerance by controlling defect mobility and migration pathways in multicomponent single-phase alloys

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