TY - JOUR U1 - Zeitschriftenartikel, wissenschaftlich - begutachtet (reviewed) A1 - Günther, Karsten A1 - Bergmann, Jean Pierre T1 - Influencing microstructure of vanadium carbide reinforced FeCrVC hardfacing during gas metal arc welding JF - Metals 2020 N2 - Vanadium carbide (VC) reinforced FeCrVC hardfacings have become important to improving the lifetime of tools suffering abrasive and impressive loads. This is because the microstructural properties of such hardfacings enable the primary VCs to act as obstacles against the penetrating abrasive. Because dilution is supposed to be the key issue influencing the precipitation behaviour of primary carbides during surfacing, the development of deposit welding processes exhibiting a reduced thermal impact, and hence lower dilution to the base material, is the primary focus of the current research. By inserting an additional hot wire in the melt, an approach was developed to separate the material and energy input during gas metal arc welding (GMAW) and hence realised low dilution claddings. The carbide content could be increased, and a grain refinement was observed compared with conventional GMAW. These effects could be attributed to both the reduced dilution and heterogeneous nucleation. KW - Welding KW - Hardfacing KW - Auftragschweißen KW - Verschleiss Y1 - 2020 UN - https://nbn-resolving.org/urn:nbn:de:bsz:959-opus-17496 SN - 2075-4701 SS - 2075-4701 U6 - https://doi.org/10.3390/met10101345 DO - https://doi.org/10.3390/met10101345 VL - 10 IS - 10 SP - 14 S1 - 14 ER -