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Title: Gas-tungsten arc welding of aluminum alloys

Abstract

A gas-tungsten arc welding method for joining together structures formed of aluminum alloy with these structures disposed contiguously to a heat-damagable substrate of a metal dissimilar to the aluminum alloy. The method of the present invention is practiced by diamond machining the fay surfaces of the aluminum alloy structures to provide a mirror finish thereon having a surface roughness in the order of about one microinch. The fay surfaces are aligned and heated sufficiently by the tungsten electrode to fuse the aluminum alloy contiguous to the fay surfaces to effect the weld joint. The heat input used to provide an oxide-free weld is significantly less than that required if the fay surfaces were prepared by using conventional chemical and mechanical practices.

Inventors:
 [1]
  1. (Kingston, TN)
Issue Date:
Research Org.:
Oak Ridge National Laboratory (ORNL), Oak Ridge, TN
OSTI Identifier:
865261
Patent Number(s):
4484060
Assignee:
United States of America as represented by United States (Washington, DC) ORNL
DOE Contract Number:  
W-7405-ENG-26
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
gas-tungsten; welding; aluminum; alloys; method; joining; structures; formed; alloy; disposed; contiguously; heat-damagable; substrate; metal; dissimilar; practiced; diamond; machining; fay; surfaces; provide; mirror; finish; thereon; surface; roughness; microinch; aligned; heated; sufficiently; tungsten; electrode; fuse; contiguous; effect; weld; joint; heat; input; oxide-free; significantly; required; prepared; conventional; chemical; mechanical; practices; weld joint; structures formed; tungsten electrode; aluminum alloy; surface roughness; aluminum alloys; heat input; heated sufficiently; conventional chemical; diamond machining; /219/

Citation Formats

Frye, Lowell D. Gas-tungsten arc welding of aluminum alloys. United States: N. p., 1984. Web.
Frye, Lowell D. Gas-tungsten arc welding of aluminum alloys. United States.
Frye, Lowell D. Sun . "Gas-tungsten arc welding of aluminum alloys". United States. https://www.osti.gov/servlets/purl/865261.
@article{osti_865261,
title = {Gas-tungsten arc welding of aluminum alloys},
author = {Frye, Lowell D.},
abstractNote = {A gas-tungsten arc welding method for joining together structures formed of aluminum alloy with these structures disposed contiguously to a heat-damagable substrate of a metal dissimilar to the aluminum alloy. The method of the present invention is practiced by diamond machining the fay surfaces of the aluminum alloy structures to provide a mirror finish thereon having a surface roughness in the order of about one microinch. The fay surfaces are aligned and heated sufficiently by the tungsten electrode to fuse the aluminum alloy contiguous to the fay surfaces to effect the weld joint. The heat input used to provide an oxide-free weld is significantly less than that required if the fay surfaces were prepared by using conventional chemical and mechanical practices.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1984},
month = {1}
}

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