Design and characterisation of AlCrFeCuNb alloys for accident-tolerant fuel cladding

Characterisation of AlCrCuFeMox high entropy alloys for nuclear fuel cladding

“…The water was not injected into the chamber until the temperature reached 1200°C and the water vapour was continuously refreshed. The water corrosion under normal operating conditions was conducted in a static autoclave in deionised water with < 0.045 mg/L oxygen for 72 h at 360°C and a pressure of 18.6 MPa at this temperature [31,32].…”

“…The high mixing entropy effect allows the HEAs to easily form singlephase solid solutions, which can reduce the effect of galvanic corrosion and the number of micro batteries, and thereby improving the corrosion resistance. Due to the cocktail effect, HEA will have properties unmatched by traditional alloys, including high hardness, wear resistance, corrosion resistance, and thermal stability [14][15][16][17][18][19][20][21]. Gwalani et al [22] studied the stability of ordered precipitates in face centred cubicbased (FCC) HEAs Al 0.3 CuFeCrNi 2 and found that precipitates are stable at both 500°C and 700°C, which indicates that some HEAs have high microstructural stability.…”

Recent Advances in Protective Coatings for Accident Tolerant Zr-Based Fuel Claddings

“…The multilayer AlCrMoNbZr/(AlCrMoNbZr)N coating with the layer step of 50 nm demonstrated better protective properties compared to 5/5 nm and 10/10 nm multilayers and single-layer AlCrMoNbZr (Figure 6) [117]. Despite the potential application of HEAs as ATF materials for fuel claddings [118][119][120][121], their application as protective coatings is challenging due to possible low temperature eutectics, with Zr alloys and complex oxide scales formed after HT oxidation. [117] with permission by Elsevier.…”

Corrosion Behavior of Alx(CrFeNi)1−x HEA under Simulated PWR Primary Water

“…Tao et al prepared AlCrFeCuNb x bulk by arc melting. This high-entropy alloy has similar corrosion weight gain to the Zr-1Nb alloy, but the high-temperature steam oxidation rate is two orders of magnitude lower than that of zirconium alloy [ 20 ] Fe, Cr, Ni, and Al are the core elements of ADSS alloys. In this paper, two single-phase high-entropy alloys (BCC and FCC) were prepared by adjusting the content of four elements.…”

“…In recent years, H. Kim et al have prepared a set of alumina-forming duplex stainlesssteel (ADSS) alloys [10] with a nominal composition range of Fe- (18)(19)(20)(21)Ni- (16)(17)(18)(19)(20)(21)Cr- (5)(6)Al. Benefiting from the oxidation resistance of Al and Cr, this series of alloys have excellent performance in simulated PWR primary water corrosion and high-temperature steam oxidation.…”