Microstructure and aging behaviour of Al5Cr32Fe35Ni22Ti6 high entropy alloy. (July 2015)

• Record Type: Journal Article
• Authors: Lin, C.-W.; Tsai, M.-H.; Tsai, C.-W.; Yeh, J.-W.; Chen, S.-K.
• Is Part Of: Materials science and technology. Volume 31:Number 10(2015:Oct.)
• Page Start: 1165
• Page End: 1170
• Publication Date: 2015-07
• Subjects: Materials science -- Periodicals; Microstructure -- Periodicals; Metallurgy -- Periodicals; 620.1105
• DOI: 10.1179/1743284715Y.0000000025
• Languages: German
• ISSNs: 0267-0836

Abstract

<abstract> <title> <x content-type="archive" xml:space="preserve">Abstract</x> </title> <p>The Al₅Cr₃₂Fe₃₅Ni₂₂Ti₆ high entropy alloy was designed, and its microstructure, mechanical properties, corrosion resistance and aging behaviour were investigated. The as cast and as homogenised alloys were composed of three phases: body centred cubic, face centred cubic and Ni₂AlTi Heusler phases. Aging at 700–900°C triggers the formation of various phases including sigma-CrFe, eta-Ni₃Ti and Ni₂AlTi Heusler phase and leads to significant age hardening and a maximum hardness of 900 HV. Additionally, the corrosion resistance of the Al₅Cr₃₂Fe₃₅Ni₂₂Ti₆ alloy is found better than that of 316L stainless steel in 0.5M H₂SO₄ solution.</p> </abstract>