Use of high power diode laser arrays for pre- and post-weld heating during friction stir welding of steels

Loading...
Thumbnail Image
Authors
Baker, B.
McNelley, T.
Matthews, M.
Rotter, M.
Rubenchik, A.
Wu, S.
Subjects
Friction stir welding
High-power diode laser array
Laser assisted friction stir welding
Hybrid friction stir welding
Advisors
Date of Issue
2015
Date
Publisher
TMS
Language
Abstract
In this research a high-power diode laser array was used to preheat HY-80 steel to determine the efficacy of using a diode laser array for preheating prior to friction stir welding in order to reduce frictional forces thereby reducing tool wear and increasing welding speeds. Using instrumented plates the temperature profile using diode heating alone was determined in order to validate theoretical models. A high-power diode laser is proposed as a more cost effective and efficient means of preheating compared to other hybrid friction stir welding techniques. Parameters of the diode array were easily controllable and resulted in a preheated area that very closely matches the typical stir zone observed in friction stir welds. A proposed diode laser assisted friction stir welding system is presented, and it is hypothesized that the addition of diode laser preheating will improve tool life and/or increase welding speeds on steels.
Type
Article
Description
Series/Report No
Department
Mechanical and Aerospace Engineering (MAE)
Organization
Naval Postgraduate School (U.S.)
Identifiers
NPS Report Number
Sponsors
Funder
Format
16 p.
Citation
B. Baker, T. McNelley, M. Matthews, M. Rotter, A. Rubenchik, and S. Wu, "Use of high-power diode laser arrays for pre-and post-weld heating during friction stir welding of steels," Friction Stir Welding VIII, TMS (The Minerals, Metals, and Materials Society), 2015, p. 21-36.
Distribution Statement
Rights
This publication is a work of the U.S. Government as defined in Title 17, United States Code, Section 101. Copyright protection is not available for this work in the United States.
Collections