Materials Science

Surface Engineering by Friction-Assisted Processes
B. Ratna Sunil, PhD

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Surface Engineering by Friction-Assisted Processes

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This forthcoming book, Surface Engineering by Friction-Assisted Processes, will provide complete information on three friction-assisted processes at the forefront of materials and manufacturing engineering today. These include friction stir processing (FSP), friction stir welding (FSW), and metal matrix composites (MMCs).

Friction-assisted processes are solid state processing methods developed very recently; they have grabbed great attention in the field of materials and manufacturing engineering. Among them, a few methods have been developed to alter surface properties. Friction stir processing (FSP) is one such method, developed based on the basic principles of friction stir welding (FSW). FSP has been gaining wide popularity for the past decade as a promising method to modify the surface microstructure of metals in solid state itself.

Another development from FSP that has a great potential in industrial applications is the fabrication of surface metal matrix composites (MMCs). Secondary phase particles can be introduced into the work piece during FSP, and surface composites can be successfully fabricated. The core of such surface MMCs is unchanged with respect to the composition and microstructure, and the structure shows negligible loss to toughness. After FSP, the modified surface exhibits improved surface properties. Similarly friction surfacing is another solid state processing method used to develop surface coatings by using consumable rods. In friction surfacing, the heat generated during the process due to the friction between the rotating consumable rod and the substrate is utilized to plastically deform the consumable rod material to transfer the material from the consumable rod to the substrate without melting both the consumable rod and the substrate.

The book will be divided into four sections:
1. Surface tailoring of metals by friction stir processing
2. Surface metal matrix composites by friction stir processing / surface engineering by friction surfacing
3. Surface engineering by friction surfacing
4. Recent developments and conclusion

The purpose of this new book is to give the reader complete information on friction-assisted processes to alter surface properties in a single volume. This book will fill an important gap as there is presently no comprehensive book on this topic.

About the Authors / Editors:
B. Ratna Sunil, PhD
Department of Mechanical Engineering, Rajiv Gandhi University of Knowledge Technologies (RGUKT), Nuzvid, Andhra Pradesh, India

B. Ratna Sunil, PhD, is currently Associate Dean of Academics at Rajiv Gandhi University of Knowledge Technologies (RGUKT) Nuzvid in Andhra Pradesh, India. Dr. Sunil has degrees in mechanical engineering and metallurgical and materials engineering and has several years of research. He has published over 20 articles in peer-reviewed journals, has published papers in several conference proceeding, has given numerous invited talks and presentations, and holds one patent. He received the Sudarashan Bhat memorial best PhD thesis award from IIT Madras, India, as well as the Bajpai-SAHA Award from the Society for Biomaterials and Artificial Organs India.

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