Friction Stir Welding(FSW) experiments are conducted using 6061-T6 aluminum as specimens. The temperatures at different distances from the center of the joint are measured. Curve fitting analyses are used to predict the temperature distribution and calculate the central temperature of the joint, proceeding by measuring temperature. A second order curve is found to better fit the experiment values by the least square method.

This study aimed at dissimilar metal butt friction stir welding in various types of processing conditions on the welding product hardness, tensile strength, etc. At first, using the AA-5052 as the similar material in FSW(friction stir welding) process. Compare the affected in different working parameter such like tool rotation speed, tool feed rate, etc. During FSW process, using the K-type thermal couple to monitoring the temperature history at different position in the specimen. According the result and finding the best working parameter. As the result shown, the high speed rotating rate or the low feeding rate will cause more heat energy in the specimen. In completed FSW condition, the range of rotating rate is 600-900rpm, the feeding rate is 40-80mm/min, the preheating temperature is suitable in 350¢J. For the aluminum alloy and copper alloy of the dissimilar metal friction stir welding, specimen¡¦s surface has holes and large chip by lacking heat during using the tool diameter of 12mm to weld, use the tool diameter of 15mm to weld can enhance the heat during the welding process and improve the production of surface.

Thesis (M.S.)--West Virginia University, 2008. / Title from document title page. Document formatted into pages; contains xi, 73 p. : ill. (some col.). Includes abstract. Includes bibliographical references (p. 63-66).

Thesis (M. S. in Mechanical Engineering)--Vanderbilt University, May 2009. / Title from title screen. Includes bibliographical references.

Thesis (M. S. in Mechanical Engineering)--Vanderbilt University, May 2009. / Title from title screen. Includes bibliographical references.

Thesis (M.S.)--Ohio State University, 2009. / Title from first page of PDF file. Includes vita. Includes bibliographical references (p. 108-109).

Thesis (M.S.)--Brigham Young University. Dept. of Mechanical Engineering, 2007. / Includes bibliographical references (p. 95-96).

Thesis (Ph.D.)--Brigham Young University. Dept. of Mechanical Engineering, 2008. / Includes bibliographical references (p. 167-172).

Thesis (M.S.)--Missouri University of Science and Technology, 2008. / Vita. The entire thesis text is included in file. Title from title screen of thesis/dissertation PDF file (viewed December 2, 2008) Includes bibliographical references.

Thesis (Ph. D.)--Missouri University of Science and Technology, 2009. / Vita. The entire thesis text is included in file. Title from title screen of thesis/dissertation PDF file (viewed July 16, 2010) Includes bibliographical references (p. 175-181).