NDLI: Considerations on repeated repairing of weldments in inconel 718 alloy

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Considerations on repeated repairing of weldments in inconel 718 alloy

Content Provider	NASA Technical Reports Server (NTRS)
Author	Lovoy, C. V. McIlwain, M. C. Munafo, P. Bayless, E. O.
Copyright Year	1981
Description	The effects of repeated weld repairs on the metallurgical characteristics, high cycle fatigue (HCF), and tensile properties of Inconel 718 butt weld joints were determined. A 1/4 in thick plate and a 1/2 in thick plate were used as well as tungsten inert gas welding, and Inconel 718 filler wire. Weld panels were subjected to 2, 6, and 12 repeated repairs and were made in a highly restrained condition. Post weld heat treatments were also conducted with the welded panel in the highly restrained condition. Results indicate that no significant metallurgical anomaly is evident as a result of up to twelve repeated weld repairs. No degradation in fatigue life is noted for up to twelve repeated repairs. Tensile results from specimens which contained up to twelve repeated weld repairs revealed no significant degradation in UTS and YS. However, a significant decrease in elongation is evident with specimens (solution treated and age hardened after welding) which contained twelve repeated repairs. The elongation loss is attributed to the presence of a severe notch on each side (fusion line) of the repair weld bead reinforcement.
File Size	9712311
Page Count	42
File Format	PDF
Alternate Webpage(s)	http://archive.org/details/NASA_NTRS_Archive_19810012642
Archival Resource Key	ark:/13960/t2n63c66k
Language	English
Publisher Date	1981-03-01
Access Restriction	Open
Subject Keyword	Metallic Materials Welded Joints Heat Treatment Welded Structures Fatigue Materials Metallography Maintenance Inconel Trademark Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science
Content Type	Text
Resource Type	Technical Report

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