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SUPERALLOYS: AN INTRODUCTION WITH THERMAL ANALYSIS
KTH, School of Industrial Engineering and Management (ITM), Materials Science and Engineering.
2015 (English)In: JOURNAL OF FUNDAMENTAL AND APPLIED SCIENCES, ISSN 1112-9867, Vol. 7, no 3, 364-374 p.Article in journal (Refereed) PublishedText
Abstract [en]

Solidification studies of Alloy 718, Allvac 718plus and Waspaloy have been of great interest in the present study. Alloy 718 is a precipitation strengthened nickel-iron based alloy. Waspaloy, another precipitation strengthened nickel base superalloy, has a very good strength at temperatures up to similar to 750 degrees C whereas Allvac 718Plus is a newly developed nickel based precipitation strengthened superalloy which retains good mechanical properties at up to similar to 700 degrees C. These three alloys were investigated in terms of how their respective solidification process reveals upon cooling. Latent heat of solidification has been estimated for all three alloys. Differential thermal analyses (DTA) have been used to approach the task. It was seen that Waspaloy has the smallest solidification range whereas Allvac 718Plus has the largest solidification interval in comparison.

Place, publisher, year, edition, pages
UNIV EL OUED , 2015. Vol. 7, no 3, 364-374 p.
Keyword [en]
Superalloys, Phase reactions, Differential Thermal Analysis, Latent heat of Solidification, Solidification interval
National Category
Other Materials Engineering
Identifiers
URN: urn:nbn:se:kth:diva-186581DOI: 10.4314/jfas.v7i3.5ISI: 000374235600005OAI: oai:DiVA.org:kth-186581DiVA: diva2:927998
Note

QC 20160513

Available from: 2016-05-13 Created: 2016-05-13 Last updated: 2016-05-13Bibliographically approved

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