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Effect of Short-Term Isothermal Exposure on the Ductility Signature of Waspaloy in the Temperature Range of 750–950 °C: A Comparison with Haynes® 282®
Högskolan Väst, Institutionen för ingenjörsvetenskap, Avdelningen för avverkande och additativa tillverkningsprocesser (AAT). (KAMPT)ORCID-id: 0000-0002-1607-9177
Manitoba Institute for Materials, University of Manitoba, Winnipeg, MB (CAN); Department of Mechanical Engineering, University of Manitoba, Winnipeg (CAN).
Department of Mechanical Engineering, University of Manitoba, Winnipeg (CAN).
Högskolan Väst, Institutionen för ingenjörsvetenskap, Avdelningen för svetsteknologi (SV). (KAMPT)ORCID-id: 0000-0001-9065-0741
2023 (engelsk)Inngår i: Proceedings of the 10th International Symposium on Superalloy 718 and Derivatives: TMS 2023 / [ed] Eric Ott och Zhongnan Bi, Springer Nature, 2023, s. 197-210Konferansepaper, Publicerat paper (Fagfellevurdert)
Abstract [en]

The evolution of microstructure and ductility has been investigated for Waspaloy after isothermal exposure between 5 and 1800s at 750–950 °C. Gamma prime (γ’) with 1.7 nm diameter is found in the mill-annealed condition, while precipitate-growth following a t1/3 relationship is observed for isothermal exposure. Grain boundary carbide networks are formed during isothermal exposure together with a rapid hardness increase. A drop in ductility is observed with the lowest values at 750 and 800 °C. Further ductility reduction during isothermal exposure correlates with the rapid hardness increase of Waspaloy. While grain boundary strengthening can compensate for the moderate age hardening observed for Haynes® 282®, the more rapid hardness increase due to γ' precipitation appears to be the dominating effect on ductility in Waspaloy. Carbide precipitation and growth kinetics are slower than those of Haynes® 282®, which further increases the relative effect of age hardening reactions on the ductility of Waspaloy.

sted, utgiver, år, opplag, sider
Springer Nature, 2023. s. 197-210
Serie
The Minerals, Metals & Materials Series
Emneord [en]
Nickel-based superalloy, Waspaloy, Haynes 282, Strain age cracking, Postweld heat treatment, Gleeble
HSV kategori
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Produktionsteknik
Identifikatorer
URN: urn:nbn:se:hv:diva-20033DOI: 10.1007/978-3-031-27447-3_13Scopus ID: 2-s2.0-85161442871ISBN: 978-3-031-27446-6 (tryckt)ISBN: 978-3-031-27447-3 (digital)OAI: oai:DiVA.org:hv-20033DiVA, id: diva2:1762909
Konferanse
The 10th International Symposium on Superalloy 718 and Derivatives, May 14-17, Pittsburgh, USA
Merknad

The support by the Consortium Materials Technology for Thermal Energy Processes (KME) through funding from Swedish Energy Agency and GKN Aerospace Sweden AB is highly appreciated

Tilgjengelig fra: 2023-06-05 Laget: 2023-06-05 Sist oppdatert: 2024-01-05bibliografisk kontrollert

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