Monotonic and Fatigue Properties of Steel Material Manufactured by Wire Arc Additive Manufacturing

Abstract

In this study, the monotonic and cyclic material properties of steel material of medium static strength produced additively in the wire arc additive manufacturing (WAAM) process were investigated. This investigated material is expected to be particularly applicable to the field of mechanical engineering, for which practical applications of the WAAM process are still pending and for which hardly any characteristic values can be found in the literature so far. The focus of the investigation was, on the one hand, to determine how the material characteristics are influenced by the load direction in relation to the layered structure and, on the other hand, how they are affected by different interlayer temperatures. For this purpose, monotonic tensile tests were carried out at room temperature as well as at elevated temperatures, and the cyclic material properties were determined. In addition, the hardness of the material and the residual stresses induced during production were measured and compared. In addition to the provision of characteristic properties for the investigated material, it was aimed to determine the extent to which the interlayer temperature influences the strength characteristics, since this can have a considerable influence on the production times and, thus, the economic efficiency of the process.

Wire and Arc Additive Manufacturing of a CoCrFeMoNiV Complex Concentrated Alloy Using Metal-Cored Wire—Process, Properties, and Wear Resistance

“…Furthermore, it can be used for a wide range of materials and also multi-material and functionally graded approaches [17][18][19][20][21][22][23][24][25]. In this case, the manufacturing process could have a significant impact on the properties of the materials that are summarized and shown in [13,26,27] and need to be considered for the prediction of the material properties. The WAAM-process needs in every case a substrate material for the start of the manufacturing process.…”

Influence of the WAAM process and design aspects on residual stresses in high-strength structural steels

“…Essential attributes for an AM component are the resulting mechanical properties of the final product. These properties depend substantially on the thermal history of the material and relate with the microstructure, toughness, and the material [1,12,13]. For additive manufacturing, the knowledge of multilayer welding can be adapted with a few modifications.…”

Probabilistic strain-fatigue life performance based on stochastic analysis of structural and WAAM-stainless steels

“…The S-N curves of WAAM stainless steel are also experimentally investigated by uniaxial tension-tension fatigue experiments of specimens parallel and perpendicular to the build direction by Gordon et al [13]. Wächter et al [14] investigated the monotonic and cyclic properties of WAAM steels. The results showed that the monotonic properties of WAAM steel are different from the same weld filler material in conventional welding, and the cyclic properties are in good agreement with cast steel.…”