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Title: Friction stir weld tools having fine grain structure

Abstract

Tools for friction stir welding can be made with fewer process steps, lower cost techniques, and/or lower cost ingredients than other state-of-the-art processes by utilizing improved compositions and processes of fabrication. Furthermore, the tools resulting from the improved compositions and processes of fabrication can exhibit better distribution and homogeneity of chemical constituents, greater strength, and/or increased durability. In one example, a friction stir weld tool includes tungsten and rhenium and is characterized by carbide and oxide dispersoids, by carbide particulates, and by grains that comprise a solid solution of the tungsten and rhenium. The grains do not exceed 10 micrometers in diameter.

Inventors:
; ; ; ;
Issue Date:
Research Org.:
Pacific Northwest National Laboratory (PNNL), Richland, WA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1243073
Patent Number(s):
9283637
Application Number:
13/747,236
Assignee:
Battelle Memorial Institute (Richland, WA)
Patent Classifications (CPCs):
B - PERFORMING OPERATIONS B22 - CASTING B22F - WORKING METALLIC POWDER
B - PERFORMING OPERATIONS B23 - MACHINE TOOLS B23K - SOLDERING OR UNSOLDERING
DOE Contract Number:  
AC05-76RL01830
Resource Type:
Patent
Resource Relation:
Patent File Date: 2013 Jan 22
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; 42 ENGINEERING

Citation Formats

Grant, Glenn J., Frye, John G., Kim, Jin Yong, Lavender, Curt A., and Weil, Kenneth Scott. Friction stir weld tools having fine grain structure. United States: N. p., 2016. Web.
Grant, Glenn J., Frye, John G., Kim, Jin Yong, Lavender, Curt A., & Weil, Kenneth Scott. Friction stir weld tools having fine grain structure. United States.
Grant, Glenn J., Frye, John G., Kim, Jin Yong, Lavender, Curt A., and Weil, Kenneth Scott. Tue . "Friction stir weld tools having fine grain structure". United States. https://www.osti.gov/servlets/purl/1243073.
@article{osti_1243073,
title = {Friction stir weld tools having fine grain structure},
author = {Grant, Glenn J. and Frye, John G. and Kim, Jin Yong and Lavender, Curt A. and Weil, Kenneth Scott},
abstractNote = {Tools for friction stir welding can be made with fewer process steps, lower cost techniques, and/or lower cost ingredients than other state-of-the-art processes by utilizing improved compositions and processes of fabrication. Furthermore, the tools resulting from the improved compositions and processes of fabrication can exhibit better distribution and homogeneity of chemical constituents, greater strength, and/or increased durability. In one example, a friction stir weld tool includes tungsten and rhenium and is characterized by carbide and oxide dispersoids, by carbide particulates, and by grains that comprise a solid solution of the tungsten and rhenium. The grains do not exceed 10 micrometers in diameter.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2016},
month = {3}
}

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