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Volume 2010 I Issue 3
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Wesling, Volker
; Schram, Antonia
; Keßler, Mirjam
Strength of low-heat joints under cyclic loads
Welding and Cutting 9 (2010) [3] 152-154
Specialist Articles
Abstract:
The arc brazing of high-strength dual-phase steels constitutes
an important alternative to the welding of these heat-sensitive
materials. The utilisation of CuSn6P brazing fillers made it possible
to achieve an increase in the strength under cyclic loads.
In this respect, the failure location was restricted to the interface
between the brazing filler and the base material of the bottom sheet where metallurgical and geometrical notch effects are superimposed. Additional remachining leads to a substantial rise in the strength of the joints under vibration loads. Due to the after-treatment, the failure location in the joints shifts into the root region of the brazing filler. Therefore, the properties of the brazing filler are now essentially responsible for the strength of the joints.
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