Residual Stresses in Friction Stir Welding

By Nilesh Kulkarni, Rajiv S. Mishra and John A. Baumann

This book describes the fundamentals of residual stresses in friction stir welding and reviews the data reported for various materials. Residual stresses produced during manufacturing processes lead to distortion of structures. It is critical to understand and mitigate residual stresses. From the onset of friction stir welding, claims have been made about the lower magnitude of residual stresses. The lower residual stresses are partly due to lower peak temperature and shorter time at temperature during friction stir welding. A review of residual stresses that result from the friction stir process and strategies to mitigate it have been presented. Friction stir welding can be combined with additional in-situ and ex-situ manufacturing steps to lower the final residual stresses. Modeling of residual stresses highlights the relationship between clamping constraint and development of distortion. For many applications, management of residual stresses can be critical for qualification of component/structure.

• Reviews magnitude of residual stresses in various metals and alloys
• Discusses mitigation strategies for residual stresses during friction stir welding
• Covers fundamental origin of residual stresses and distortion

• Language: English
• Publisher: Elsevier Science
• Release date: Nov 20, 2013
• ISBN: 9780128007327

Nilesh Kulkarni

Nilesh. N. Kulkarni Ph.D. completed his M.E. (electronics and telecommunication) from All India Shri Shivaji Memorial Society’s Institute of Information Technology, Pune. His areas of interests include biomedical signal and image processing, pattern recognition, and machine learning. Presently, he is working on biomedical signal processing applications. He is a member of IETE and IEI, India and a member of the IEEE.

Book preview

Preface to the Friction Stir Welding and Processing Book Series

Rajiv S. Mishra

University of North Texas

Twenty-two years since its invention, friction stir welding has been established as a significant solid-state welding technique. Its application spans across all sectors; aerospace, automotive, railways, shipbuilding, to name a few. The friction stir process leads to many unique microstructural features and that has been the basis for development of a broader metallurgical tool of friction stir processing for microstructural modification. In the last 15 years, the burgeoning number of technical papers shows maturing of the field. Additionally, a few edited books, review papers, and conference proceedings provide a good survey of the progress made. With the volume of available information increasing, a need was felt to have a short format book series to bring out critical reviews dedicated to the overall field of friction stir welding and processing. As the founding series editor, it is my intention to bring a number of topical volumes each year to further the science and technology of friction stir welding and