NDLI: Cracking susceptibility after post-weld heat treatment in Haynes 282 nickel based superalloy

Content Provider	Springer Nature Link
Author	Osoba, L. O. Khan, A. K. Adeosun, S. O.
Copyright Year	2013
Abstract	This paper presents a study of the standard post-weld heat treatment (PWHT) behaviour of autogenous laser welded γ′ age-hardenable precipitation strengthened nickel based superalloy Haynes 282 (HY 282). The study involves a careful and detailed microstructural characterisation as well as an analysis of the weld cracking susceptibility during welding and Gleeble thermo-mechanical physical simulation. Various factors that could influence post-weld cracking in superalloys weld were experimentally examined. Our microstructural examination of the as-solution heat treated (SHTed) material and the thermo-mechanically refined grain material shows that intergranular heat affected zone (HAZ) cracking is observable in only the as-welded SHTed material. There was no indication of post-weld heat treatment cracking in all welded materials. Our conclusion, in this study, is that the chemistry of superalloy HY 282 which aids the preclusion/ formation of deleterious solidification microconstituents during welding as well as its relatively slow aging kinetics enhances its resistance to PWHT cracking.
Starting Page	747
Ending Page	753
Page Count	7
File Format	PDF
ISSN	10067191
Journal	Acta Metallurgica Sinica (English Letters)
Volume Number	26
Issue Number	6
e-ISSN	21941289
Language	English
Publisher	Springer Berlin Heidelberg
Publisher Date	2013-11-23
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Spectroscopy/Spectrometry Microstructure Analysis Tribology, Corrosion and Coatings Organometallic Chemistry Cracking Nickel based Superalloy Characterization and Evaluation of Materials Metallic Materials Nanotechnology
Content Type	Text
Resource Type	Article
Subject	Industrial and Manufacturing Engineering Metals and Alloys

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