Hot Cracking of Allvac 718Plus, Alloy 718 and Waspaloy at Varestraint Testing
2008 (English)In: 4th International Symposium on Aerospace Materials and Manufacturing Processes: Advances in Processing and Repair of Aerospace Materials 2008 / [ed] M. Jahazi, M. Elboujdaini and P. Patnaik, Montreal: Canadian Institute of Mining, Metallurgy and Petroleum, 2008, 401-413 p.Conference paper (Refereed)
Varestraint testing together with DSC and SEM-EDX analyses have been performed as means of investigating the hot cracking susceptibility of Allvac 718Plus, alloy 718 and Waspaloy. The solidification sequences in Allvac 718Plus and alloy 718 were very similar to each other starting by an initial solidification of the gamma phase, gamma/MC reaction at around 1260°C and then finally ending the sequence by gamma/Laves eutectic reaction at around 1150°C. Waspaloy had the same solidification sequence, except no Laves phase formation takes place, and solidification started at a somewhat higher temperature as compared to alloy 718 and the solidification sequence ends by a gamma/MC reaction at around 1245°C. The total amount of hot cracking in Waspaloy was shown to be much less than that in alloy 718 and in Allvac 718Plus which is believed to be related to the presence of the Laves eutectic in the latter two alloys with corresponding larger solidification ranges. Hot cracking of 718Plus is slightly less than in 718.
Place, publisher, year, edition, pages
Montreal: Canadian Institute of Mining, Metallurgy and Petroleum, 2008. 401-413 p.
Metallurgy and Metallic Materials
Research subject Production Technology; ENGINEERING, Manufacturing and materials engineering
IdentifiersURN: urn:nbn:se:hv:diva-8995ISBN: 978-1-61738-616-9OAI: oai:DiVA.org:hv-8995DiVA: diva2:900729
47th Conference of Metallurgists (COM) 2008 in Honour of Dr. Mahesh Chaturvedi, Winnipeg, Manitoba, Canada, 24-27 August, 2008
ProjectsVarestraint testing, hot cracking, Allvac 718Plus, alloy 718, Waspalo