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Deformation effects related to pin-t...

Davis, William Charles.

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Deformation effects related to pin-tool geometry during friction-stir welding of aluminum alloy 6061.

Record Type:	Electronic resources : Monograph/item
Title/Author:	Deformation effects related to pin-tool geometry during friction-stir welding of aluminum alloy 6061./
Author:	Davis, William Charles.
Description:	66 p.
Notes:	Source: Masters Abstracts International, Volume: 43-06, page: 2401.
Contained By:	Masters Abstracts International43-06.
Subject:	Engineering, Metallurgy. -
Online resource:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=1425896
ISBN:	0542042657

Deformation effects related to pin-tool geometry during friction-stir welding of aluminum alloy 6061.
Davis, William Charles.

Deformation effects related to pin-tool geometry during friction-stir welding of aluminum alloy 6061. - 66 p.

Source: Masters Abstracts International, Volume: 43-06, page: 2401.

Thesis (M.S.)--The University of Texas at El Paso, 2005.

Friction-stir welding (FSW) is a solid-state joining process where a non-consumable pin-tool is plunged, rotated, and traversed along a square butt weld joint using conventional milling techniques. The process involves superplastic deformation and results in a weld zone characterized by dynamically recrystallized, equiaxed grains. FSW has been demonstrated to be a favorable process for the joining of a variety of metals, alloys, and metal matrix composites (MMC). Two particular studies involving the FSW of cast aluminum 359 and aluminum alloy 6061 with 20% SiC MMC document the tool wear phenomena. The studies indicate that a self-optimization process occurs changing the geometry of the pin-tool as it is worn away and altering material flow within the weld zone. This study seeks to evaluate and compare welds made using these two (threaded screw and wear-optimized) pin-tool geometries.

ISBN: 0542042657Subjects--Topical Terms:

1023648
Engineering, Metallurgy.

Deformation effects related to pin-tool geometry during friction-stir welding of aluminum alloy 6061.
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020 $a 0542042657
035 $a (UnM)AAI1425896
035 $a AAI1425896
040 $a UnM $c UnM
100 1 $a Davis, William Charles. $3 1903508
245 1 0 $a Deformation effects related to pin-tool geometry during friction-stir welding of aluminum alloy 6061.
300 $a 66 p.
500 $a Source: Masters Abstracts International, Volume: 43-06, page: 2401.
500 $a Adviser: Larry E. Murr.
502 $a Thesis (M.S.)--The University of Texas at El Paso, 2005.
520 $a Friction-stir welding (FSW) is a solid-state joining process where a non-consumable pin-tool is plunged, rotated, and traversed along a square butt weld joint using conventional milling techniques. The process involves superplastic deformation and results in a weld zone characterized by dynamically recrystallized, equiaxed grains. FSW has been demonstrated to be a favorable process for the joining of a variety of metals, alloys, and metal matrix composites (MMC). Two particular studies involving the FSW of cast aluminum 359 and aluminum alloy 6061 with 20% SiC MMC document the tool wear phenomena. The studies indicate that a self-optimization process occurs changing the geometry of the pin-tool as it is worn away and altering material flow within the weld zone. This study seeks to evaluate and compare welds made using these two (threaded screw and wear-optimized) pin-tool geometries.
520 $a Single-pass friction-stir welding was performed along the 4&inches; direction on commercial plates of aluminum alloy 6061 with dimensions of 4&inches; x 2.25&inches; x 0.25&inches;. The plates were clamped on a steel backing plate and the friction-stir welding tool was mounted in a 1.9 cm diameter milling chuck. The plunge depth was 0.025&inches; at the back of the shoulder and a lead angle of 1° was used. The rotation speeds were 500 and 1000 RPM and the traverse speeds were 3, 5, and 7 mm/s. The pin tool geometry was classified as screw or wear-optimized and each pin tool was slightly foreshortened. Samples were examined by optical metallography and Vickers microhardness measurements were taken along a mid-thickness line traversing the weld zone. Grain size measurements were also calculated.
590 $a School code: 0459.
650 4 $a Engineering, Metallurgy. $3 1023648
650 4 $a Engineering, Materials Science. $3 1017759
690 $a 0743
690 $a 0794
710 2 0 $a The University of Texas at El Paso. $3 1057446
773 0 $t Masters Abstracts International $g 43-06.
790 1 0 $a Murr, Larry E., $e advisor
790 $a 0459
791 $a M.S.
792 $a 2005
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=1425896