NDLI: The strength and characteristics of vppa welded 2219-t87 aluminum alloy

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The strength and characteristics of vppa welded 2219-t87 aluminum alloy

Content Provider	NASA Technical Reports Server (NTRS)
Author	Jemian, W. A.
Copyright Year	1985
Description	A study of the variable polarity plasma arc (VPPA) welding process and those factors that control the structure and properties of VPPA welded aluminum alloy 2219-T87 was conducted. The importance of joint preparation, alignment of parts and welding process variables are already established. Internal weld defects have been eliminated. However, a variation of properties was found to be due to the size variation of interdendritic particles in the fusion zone. These particles contribute to the void formation process, which controls the ultimate tensile strength of the welded alloy. A variation of 150 microns in particle size correlated with a 10 ksi variation of ultimate tensile strength. It was found that all fracture surfaces were of the dimple rupture type, with fracture initiating within the fusion zone.
File Size	1281863
Page Count	35
File Format	PDF
Alternate Webpage(s)	http://archive.org/details/NASA_NTRS_Archive_19850013914
Archival Resource Key	ark:/13960/t9j43n666
Language	English
Publisher Date	1985-01-01
Access Restriction	Open
Subject Keyword	Metallic Materials Welded Joints Dimpling Plasma Arc Welding Weld Tests Rupturing Aluminum Alloys Weldability Tensile Strength Fracturing Failure Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science
Content Type	Text
Resource Type	Article

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