Friction Welding

Thermal and Metallurgical Characteristics

verfasst von: Bekir Sami Yilbas, Ahmet Z. Sahin

Verlag: Springer Berlin Heidelberg

Buchreihe : SpringerBriefs in Applied Sciences and Technology

Enthalten in: Springer Professional "Wirtschaft+Technik" , Springer Professional "Technik"

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Über dieses Buch

This book provides insight into the thermal analysis of friction welding incorporating welding parameters such as external, duration, breaking load, and material properties. The morphological and metallurgical changes associated with the resulting weld sites are analysed using characterization methods such as electron scanning microscope, energy dispersive spectroscopy, X-ray Diffraction, and Nuclear reaction analysis.

Inhaltsverzeichnis

Frontmatter

Chapter 1. Introduction

Abstract

Friction welding is one of the effective joining techniques in industry. Friction welding is the solid state welding and it offers an alternative welding process for the joining the parts in particular electrical appliances, engine parts, etc. The welding takes place when two surfaces, subjected to the joining, get in mechanical contact and the surfaces are heated to the desired temperature through frictional heat generation and, later, a forging pressure is introduced to weld the parts. In the present chapter, introduction to friction welding is presented and the welding mechanisms are described.

Bekir Sami Yilbas, Ahmet Z. Sahin

Chapter 2. Thermal Analysis of Friction Welding

Abstract

Thermal energy is generated during the friction welding process. In this case, the solid surfaces rub against each other and heat is generated as a result of friction. Since the process is trasient and involves with axis-symmetric heating situation, formulation of the thermal analysis becomes essential. In this chapter, thermal analysis based on Fourier heat conduction is introduced and the solution of conduction equation is obtained for appropriate boundary conditions.

Bekir Sami Yilbas, Ahmet Z. Sahin

Chapter 3. Non-equilibrium Heating Situations

Abstract

The heat conduction depth, in some cases, can be limited with short distances. This results in non-equilibrium heating situation. In this case, the lattice sub-system thermally separates from the electron sub-system in the heated region. The energy transfer can be formulated through the hyperbolic heating model incorporating the thermal separation of the sub-systems. In this chapter, the electron kinetic theory approach is adopted to model the non-equilibrium heat transfer in the heated region during the friction welding process. The mathematical arrangements for the solution of the heat equation is presented.

Bekir Sami Yilbas, Ahmet Z. Sahin

Chapter 4. Concluding Remarks

Abstract

The physical parameters affecting the friction welding mainly include rotational speed, forging load, welding materials, surface and interface conditions of the substrate material. The speed of rotation affects the intermetallic layer thickness such that a low speed of rotation results in less intermetallic layer thickness. The dissimilar friction welds are tolerant to variations of speed and arrest time as compared to other welding techniques. Nevertheless, the proper selection of the operating parameters of friction welding and prior preparation of the surfaces can minimize the defect sites, which can occur in the weld section. In the present chapter, the brief description of the importance and findings of the friction welding process and resulting weld characteristics are presented.

Bekir Sami Yilbas, Ahmet Z. Sahin

Titel: Friction Welding
verfasst von: Bekir Sami Yilbas
Ahmet Z. Sahin
Verlag: Springer Berlin Heidelberg
Electronic ISBN: 978-3-642-54607-5
Print ISBN: 978-3-642-54606-8
DOI: https://doi.org/10.1007/978-3-642-54607-5

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