斯普林格 摩擦焊 Friction Welding

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Bekir Sami Yilbas
Mechanical Engineering Department
King Fahd University of Petroleum
and Minerals
Dhahran
Saudi Arabia
Ahmet Z. Sahin
King Fahd University of Petroleum
and Minerals
Dhahran
Saudi Arabia
Friction welding can be used widely in industry because of its precision of
operation, high processing speed, and low cost. Friction welding has advantages of
incomplete molten state of the welded parts at the weld interface region. This is
particularly important for welding of dissimilar materials, in which case narrow
heat affected zone is favorable. To improve the end-product quality, care must be
taken to select proper welding parameters according to the sets of materials used in
the welding process. In addition, the development of high temperature gradients in
a short distance across the weld interface results in high stress levels in the welded
region. In some circumstances, this limits the practical applications of the welded
parts, in particular for weld sizes comparable to micro/nanoscales. Although
considerable research studies were carried out to minimize the welding defects,
further studies need to be carried out to explore the possible application of friction
welding at micro/nanoscales. This is mainly because of the complicated nature of
the problem at micro/nanoscales. Since the process involves with multi-physics,
development of new model studies is required to capture the physical phenomena.
However, online experimentation of the welding process at micro/nano level is
extremely difficult and costly because of the limitations in sensing systems, which
operate at high temperatures during the friction welding process. On the other
hand, the model studies of the welding process provide useful insight into the
physical processes taking place during the welding and provide optimum operating
parameters for sound welds.