Influence of degree of deformation on welding pore reduction in high-carbon steels

Abstract Locally adapted properties within a machine component offer opportunities to increase the performance of by using high strenght materials where they are needed. The economic production such hybrid components on other hand represents major challenge. new tailored forming process chain, which is developed collaborative research center (CRC 1153) possible solution produce components. This made use pre-joined semi-finished products from two different steel alloys, subsequently formed. can be manufactured for example means deposition welding. Due thermal mechanical treatment, an overall higher strength joining zone achieved. welding processes used generate cladding base material. During welding, one most difficult tasks reduce amount and size pores in zone. These welded parts. However, additional occur intermediate between substrate cladding. In presented study, influence closing was investigated. Therefore, cylindrical specimen were extracted longitudinal direction track wire-cut eroding. tracks plasma-transferred arc AISI 52100 plate 1015. Further, specimens prepared transversely, so that material, layer, material axially arranged specimen. checked scanning acoustic microscopy. Subsequently, uniaxial compression test carried out with various degrees deformation designs examined again pores. A microstructure analysis after each step. investigations show there need minimum degree this required plastic strain cannot achieved specimen, result homogeneous temperature distribution leads flow main taking place