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Effects of high frequency current in welding aluminum alloy 6061Uncontrolled high frequency current causes cracking in the heat-affected zone of aluminum alloy 6061 weldments during tungsten inert gas ac welding. Cracking developed when an improperly adjusted superimposed high frequency current was agitating the semimolten metal in the areas of grain boundary.
Document ID
19680000383
Acquisition Source
Legacy CDMS
Document Type
Other - NASA Tech Brief
Authors
Fish, R. E.
Date Acquired
August 4, 2013
Publication Date
October 1, 1968
Subject Category
Mechanics
Report/Patent Number
MFS-18337
Report Number: MFS-18337
Accession Number
68B10383
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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