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Effect of Different Solution Heat Treatments on the Hot Ductility of Superalloys: Part 3 - Waspaloy
University West, Department of Engineering Science, Division of Manufacturing Processes. Department of Materials Technology, GKN Aerospace Engine Systems, Trollhättan, Sweden och Department of Materials and Manufacturing Technology, Chalmers University of Technology, Gothenburg, Sweden. (PTW)ORCID iD: 0000-0001-9065-0741
Department of Materials Technology, GKN Aerospace Engine Systems, Trollhättan, Sweden och Department of Materials and Manufacturing Technology, Chalmers University of Technology, Gothenburg, Sweden.
Department of Applied Physics, Chalmers University of Technology, Gothenburg, Sweden.
Department of Mechanical and Industrial Engineering, University of Manitoba, Winnipeg, MB, Canada.
2013 (English)In: Materials Science and Technology, ISSN 0267-0836, Vol. 29, no 1, p. 43-53Article in journal (Refereed) Published
Abstract [en]

The susceptibility to heat affected zone cracking of Waspaloy has been investigated in terms of its hot ductility, measured as the reduction of area (RA). Gleeble testing with on-heating as well as on-cooling test cycles was carried out to illuminate the influence of different 4 h solution heat treatments between 996 and 1080°C. A ductility maximum of between 80 and 90%RA was found at 1050–1100°C for all conditions in the on-heating tests. Although the different heat treatment conditions showed similar macrohardness, the particle size and distribution of the γ′ and M23C6 phases differed, which significantly affected the on-heating ductility in the lower temperature test region. The ductile to brittle transition was initiated at 1100°C in the on-heating testing with indications of grain boundary liquation at the higher test temperatures. Ductility recovery, as measured in the on-cooling tests from 1240°C, was very limited with <30%RA for all conditions and test temperatures except for the 1080°C/4 h treatment, which exhibited 60%RA at 980°C.

Place, publisher, year, edition, pages
Taylor & Francis Group, 2013. Vol. 29, no 1, p. 43-53
Keywords [en]
Waspaloy, hot ductility, gleeble testing
National Category
Manufacturing, Surface and Joining Technology Metallurgy and Metallic Materials
Research subject
Production Technology; ENGINEERING, Manufacturing and materials engineering
Identifiers
URN: urn:nbn:se:hv:diva-9003DOI: 10.1179/1743284712Y.0000000108OAI: oai:DiVA.org:hv-9003DiVA, id: diva2:900786
Available from: 2016-02-05 Created: 2016-02-05 Last updated: 2016-02-10Bibliographically approved

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Andersson, Joel

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