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Title: Multiple pass and multiple layer friction stir welding and material enhancement processes

Abstract

Processes for friction stir welding, typically for comparatively thick plate materials using multiple passes and multiple layers of a friction stir welding tool. In some embodiments a first portion of a fabrication preform and a second portion of the fabrication preform are placed adjacent to each other to form a joint, and there may be a groove adjacent the joint. The joint is welded and then, where a groove exists, a filler may be disposed in the groove, and the seams between the filler and the first and second portions of the fabrication preform may be friction stir welded. In some embodiments two portions of a fabrication preform are abutted to form a joint, where the joint may, for example, be a lap joint, a bevel joint or a butt joint. In some embodiments a plurality of passes of a friction stir welding tool may be used, with some passes welding from one side of a fabrication preform and other passes welding from the other side of the fabrication preform.

Inventors:
 [1];  [1];  [2]
  1. Knoxville, TN
  2. Harriman, TN
Publication Date:
Research Org.:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1012767
Patent Number(s):
7,762,447
Application Number:
12/051,972
Assignee:
UT-Battelle, LLC (Oak Ridge, TN) ORO
DOE Contract Number:
AC05-00OR22725
Resource Type:
Patent
Country of Publication:
United States
Language:
English

Citation Formats

Feng, Zhili, David, Stan A, and Frederick, David Alan. Multiple pass and multiple layer friction stir welding and material enhancement processes. United States: N. p., 2010. Web.
Feng, Zhili, David, Stan A, & Frederick, David Alan. Multiple pass and multiple layer friction stir welding and material enhancement processes. United States.
Feng, Zhili, David, Stan A, and Frederick, David Alan. Tue . "Multiple pass and multiple layer friction stir welding and material enhancement processes". United States. doi:. https://www.osti.gov/servlets/purl/1012767.
@article{osti_1012767,
title = {Multiple pass and multiple layer friction stir welding and material enhancement processes},
author = {Feng, Zhili and David, Stan A and Frederick, David Alan},
abstractNote = {Processes for friction stir welding, typically for comparatively thick plate materials using multiple passes and multiple layers of a friction stir welding tool. In some embodiments a first portion of a fabrication preform and a second portion of the fabrication preform are placed adjacent to each other to form a joint, and there may be a groove adjacent the joint. The joint is welded and then, where a groove exists, a filler may be disposed in the groove, and the seams between the filler and the first and second portions of the fabrication preform may be friction stir welded. In some embodiments two portions of a fabrication preform are abutted to form a joint, where the joint may, for example, be a lap joint, a bevel joint or a butt joint. In some embodiments a plurality of passes of a friction stir welding tool may be used, with some passes welding from one side of a fabrication preform and other passes welding from the other side of the fabrication preform.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Jul 27 00:00:00 EDT 2010},
month = {Tue Jul 27 00:00:00 EDT 2010}
}

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