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Problems of pad welding structural steels with martensitic filler metal

Tasak E., Ziewiec A., Zielińska-Lipiec A., Ziewiec K.

Advances in Materials Science

2019

Vol. 19, nr 2(60)

5--14

There is a problem in obtaining a suitable impact strength of the padding weld after cladding with a martensitic filler metal. Too low annealing temperature below 580°C and the excessive annealing temperature above 650°C do not provide adequate impact strength of the padding weld. A heat treatment technology for mixed joints has been developed based on the results of the microscopic observations, X-ray diffraction measurements and transmission electron microscope examination. The problem was identified and a special technology of heat treatment for the dissimilar joint was elaborated. This technology provides a high impact resistance of the padding weld and an appropriate properties of the base material.