Preparation, structure, and properties of an AlCrMoNbZr high-entropy alloy coating for accident-tolerant fuel cladding

Zhang, W.; Tang, Rui; Yang, Zhong; Liu, C.H.; Hong, Chen; Yang, Jijun; Liao, Jiali; Yang, Yuanyou; Liu, Naiming

doi:10.1016/j.surfcoat.2018.04.037

Cited by 103 publications

(20 citation statements)

References 34 publications

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“…A useful lookup tool for the neutron scattering and capture cross sections for elements as a function of neutron energy is the TENDL nuclear data library [ 27 ]. A number of studies have used low neutron cross section elements to design HEAs for ATF cladding, either as bulk alloys [ 28 , 29 , 30 , 31 ] or as coatings for Zr alloys [ 32 , 33 , 34 , 35 , 36 ]. Preliminary results of the HEA coatings has suggested better wear and corrosion performance than uncoated Zr, and authors have claimed they are good candidates for ATF cladding [ 33 , 34 ].…”

Section: Desired Properties and Element Restrictionsmentioning

confidence: 99%

High-Entropy Alloys for Advanced Nuclear Applications

Pickering

Carruthers

Barron

et al. 2021

Entropy

176

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The expanded compositional freedom afforded by high-entropy alloys (HEAs) represents a unique opportunity for the design of alloys for advanced nuclear applications, in particular for applications where current engineering alloys fall short. This review assesses the work done to date in the field of HEAs for nuclear applications, provides critical insight into the conclusions drawn, and highlights possibilities and challenges for future study. It is found that our understanding of the irradiation responses of HEAs remains in its infancy, and much work is needed in order for our knowledge of any single HEA system to match our understanding of conventional alloys such as austenitic steels. A number of studies have suggested that HEAs possess ‘special’ irradiation damage resistance, although some of the proposed mechanisms, such as those based on sluggish diffusion and lattice distortion, remain somewhat unconvincing (certainly in terms of being universally applicable to all HEAs). Nevertheless, there may be some mechanisms and effects that are uniquely different in HEAs when compared to more conventional alloys, such as the effect that their poor thermal conductivities have on the displacement cascade. Furthermore, the opportunity to tune the compositions of HEAs over a large range to optimise particular irradiation responses could be very powerful, even if the design process remains challenging.

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Section: Desired Properties and Element Restrictionsmentioning

confidence: 99%

High-Entropy Alloys for Advanced Nuclear Applications

Pickering

Carruthers

Barron

et al. 2021

Entropy

176

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“…The development of HEAs is motivated by their excellent properties such as mechanical strength, resistance to oxidation, and soft magnetic properties [2][3][4]. Moreover, they also have superior surface properties like high hardness, excellent wear performance, and outstanding corrosion resistance [5][6][7][8][9][10]. The FeNiCoAlCu HEA coating (HEAC) fabricated on the AISI 1045 steel using a laser cladding method had a good wear performance even at high temperature [7].…”

Section: Introductionmentioning

confidence: 99%

“…The laser-cladded TiVCrAlSi HEAC had much higher hardness values (1108 HV for the silicide and 628 HV for the matrix) than that of the Ti-6Al-4V substrate [8]. The AlCrMoNbZr HEAC was deposited on a N36 zirconium alloy substrate using magnetron co-sputtering technology and showed superior corrosion resistance and high hardness [9]. The AlCoCrFeNi HEAC was fabricated on the 1045 steel substrate using electrospark deposition technology, which had the improved corrosion resistance compared to the substrate [10].…”

Section: Introductionmentioning

confidence: 99%

Microstructure and Properties of CoCrFeNi(WC) High-Entropy Alloy Coatings Prepared Using Mechanical Alloying and Hot Pressing Sintering

et al. 2018

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The CoCrFeNi high-entropy alloy coatings (HEACs) with different weight ratios (10 and 30 wt.%) of WC additions have been prepared using mechanical alloying and a vacuum hot pressing sintering technique on a Q235 steel substrate. The microstructures, microhardness, wear resistance, and corrosion resistance of HEACs were studied. The CoCrFeNi(WC) powders were obtained by mixing the CoCrFeNi HEA powders and WC particles. The sintered products of both HEACs with high relative density contained one solid solution phase with face-centered cubic structure, WC, and unknown precipitate phases. The transition boundary had a good metallurgical bonding with the coating and substrate. The average microhardness values of CoCrFeNi HEACs with 10 and 30 wt.% WC additions reached 475 and 531 HV respectively, which were far higher than that of the substrate (160 HV). Moreover, both coatings exhibited better wear resistance than the substrate under the same wear conditions. The 30 wt.% WC HEAC displayed the lower friction coefficient, and the shallower wear groove depth. The grain refinement strengthening and second-phase particle strengthening could be beneficial to the enhanced hardness and wear resistance of coatings with WC additions. The corrosion behavior of the tested samples in the 3.5 wt.% NaCl solution were investigated using electrochemical polarization measurements. The CoCrFeNi(WC) coatings all revealed the improved corrosion resistance. Especially, a 10 wt.% WC addition remarkably enhanced the comprehensive corrosion resistance and easy passivation of CoCrFeNi HEAC.

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“…The melt process was carried out under a continuous flow of protective argon at approximately 0.5 atm. As in many studies of HEAs [39,[49][50][51]. the re-melting process was repeated three times to guarantee chemical homogeneity.…”

Section: Experimental Methodsmentioning

confidence: 99%

Synthesis and Corrosion Resistance of FeMnNiAlC10 Multi-Principal Element Compound

2021

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A multi-principal element FeMnNiAlC10 bulk alloy was produced by vacuum arc melting. The same alloy was sintered as a thin film on a silicon substrate by ion beam sputter deposition. The bulk alloy has a multiphase structure the elements predominantly segregating into iron manganese carbides and nickel aluminium phases. The thin film is amorphous without detectable phase segregations. The absence of segregation is attributed to the film composition and deposition onto substrate at temperature below 400 K. The corrosion resistance of the thin film alloy was evaluated in 3.5% NaCl. The FeMnNiAlC10 thin film alloy has better corrosion resistance than 304SS. The hardness of the thin film was approximately 7.2 ± 0.3 GPa and the reduced Young’s modulus was approximately 103 ± 4.6 GPa. FeMnNiAlC10 thin film could be a good candidate for coating oil and gas extraction soft iron infrastructure.

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Preparation, structure, and properties of an AlCrMoNbZr high-entropy alloy coating for accident-tolerant fuel cladding

Cited by 103 publications

References 34 publications

High-Entropy Alloys for Advanced Nuclear Applications

High-Entropy Alloys for Advanced Nuclear Applications

Microstructure and Properties of CoCrFeNi(WC) High-Entropy Alloy Coatings Prepared Using Mechanical Alloying and Hot Pressing Sintering

Synthesis and Corrosion Resistance of FeMnNiAlC10 Multi-Principal Element Compound

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