A nickel based superalloy reinforced by both Ni3Al and Ni3V ordered-fcc precipitates
Knowles, Alexander J and Reynolds, Lucy and Vorontsov, Vassili A and Dye, David (2019) A nickel based superalloy reinforced by both Ni3Al and Ni3V ordered-fcc precipitates. Scripta Materialia, 162. pp. 472-476. ISSN 1359-6462
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Abstract
A nickel based superalloy has been designed where the fcc γ Ni matrix is reinforced by two different ordered-fcc intermetallic compounds, γ' L12 Ni3Al and γ'' D022 Ni3V. Primary ageing at 900–1000 °C precipitated spherical L12 Ni3Al, whose volume fraction and size were controlled by altering the ageing temperature and time. Secondary ageing at 700 °C for 1–1000 h precipitated D022 Ni3V laths. The duplex precipitation increased hardness by up to 85 HV, with ∼ 500 MPa compressive proof strength maintained at 800 °C. Electron microscopy studied the Ni3Al precipitation and confirmed the form of the secondary Ni3V precipitates and their long term stability.
ORCID iDs
Knowles, Alexander J, Reynolds, Lucy, Vorontsov, Vassili A
ORCID: https://orcid.org/0000-0002-1958-0602 and Dye, David;
Item type: Article ID code: 66346 Dates: DateEvent15 March 2019Published21 December 2018Published Online9 December 2018AcceptedKeywords: superalloy, precipitation, intermetallics, microstructure, mechanical properties, Engineering design, Materials Science(all), Condensed Matter Physics Subjects: Technology > Engineering (General). Civil engineering (General) > Engineering design Department: Faculty of Engineering > Design, Manufacture and Engineering Management Depositing user: Pure Administrator Date deposited: 12 Dec 2018 12:21 Last modified: 11 May 2021 00:44 Related URLs: URI: https://strathprints.strath.ac.uk/id/eprint/66346
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