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Effect of different solution heat treatments on hot ductility of superalloys: Part 2 – Allvac 718Plus
Högskolan Väst, Institutionen för ingenjörsvetenskap, Avd för tillverkningsprocesser. Department of Materials Technology, Volvo Aero Corporation, Trollhättan, Sweden and Department of Materials and Manufacturing Technology, Chalmers University of Technology, Gothenburg, Sweden. (PTW)ORCID-id: 0000-0001-9065-0741
Department of Materials Technology, Volvo Aero Corporation, Trollhättan, Sweden and 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.
2012 (engelsk)Inngår i: Materials Science and Technology, ISSN 0267-0836, Vol. 28, nr 6, s. 733-741Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

The hot ductility of Allvac 718Plus for different solution heat treatments (954°C–15 h, 954°C–1 h, 982°C–1 h and 1050°C–3 h+954°C–1 h) has been investigated using Gleeble testing. Substantial variations in the microstructure among the heat treatments affected the Gleeble test hot ductility only to a very limited extent. Constitutional liquation of the NbC phase was found to be the main cause for the poor ductility at high testing temperatures in the on-heating cycle as well as at the lower temperatures on-cooling. Grain boundary δ phase was seen to assist the constitutional liquation of the NbC phase. Based on established evaluation criteria for Gleeble ductility testing, a ranked indicator for weldability is suggested.

sted, utgiver, år, opplag, sider
Taylor & Francis Group, 2012. Vol. 28, nr 6, s. 733-741
Emneord [en]
Welding, heat treatment
HSV kategori
Forskningsprogram
Produktionsteknik; TEKNIK, Produktions- och materialteknik
Identifikatorer
URN: urn:nbn:se:hv:diva-9004DOI: 10.1179/1743284712Y.0000000002OAI: oai:DiVA.org:hv-9004DiVA, id: diva2:900793
Tilgjengelig fra: 2016-02-05 Laget: 2016-02-05 Sist oppdatert: 2019-04-29bibliografisk kontrollert

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