Characterisation of AlCrCuFeMox high entropy alloys for nuclear fuel cladding. Issue 18 (12th December 2022)

• Record Type: Journal Article
• Authors: Zhu, Xincheng; Tao, Zhenrui; Wang, Chunji; Zhang, Yanwei; Bai, Guanghai; Lan, Rui
• Is Part Of: Materials science and technology. Volume 38:Issue 18(2022)
• Page Start: 1563
• Page End: 1572
• Publication Date: 2022-12-12
• Subjects: AlCrCuFeMox -- high entropy alloy -- accident-tolerant fuel -- water vapour oxidation -- quasi-critical water corrosion; Materials science -- Periodicals; Microstructure -- Periodicals; Metallurgy -- Periodicals; 620.1105
• DOI: 10.1080/02670836.2022.2093000
• Languages: English
• ISSNs: 0267-0836

Abstract

Abstract : High entropy alloys (HEAs) have great potential used for accident-tolerant fuel (ATF) due to their excellent properties. The ATF properties of AlCrCuFeMo x HEAs were systematically investigated. The AlCrCuFeMo x had the typical dendrite morphology and Cu and Al elements segregated in the interdendrite region. After 1200°C water vapour oxidation, compact and continuous α-Al2 O3 oxide film formed on the surface and effectively protected the inner from further oxidation. When x = 1, the HEA had the best oxidation resistance (59 mg/dm 2 weight gain after 1 h), two orders lower than that of the traditional Zr-1Nb alloy for nuclear fuel cladding. Under normal operation water condition, the performance of the present HEAs is not as good as Zr-1Nb due to the segregation of Cu and dispersed Al2 O3 formed on the surface.