Parametric study and characterization of wire arc additive manufactured steel structures
作者： S. Kumar , V. , Mandal , A. , Das
DOI: 10.1007/S00170-021-07261-6
关键词: Pearlite 、 Composite material 、 Porosity 、 Layer (electronics) 、 Materials science 、 Martensite 、 Gas metal arc welding 、 Bainite 、 Ferrite (iron) 、 Cementite
摘要: This paper focuses on selecting optimal process parameters for uniform single-layer weld bead deposition and the characterization of structures manufactured by GMAW-based wire arc additive manufacturing (WAAM) process. The results reveal that obtained grain vary due to local thermal cycle. Near base fabricated part, ferrite with pearlite is observed. At same time, observed grains become coarser along direction. Again adjacent final layer, finer are thin strips bainite, which has been confirmed through XRD analysis. Also, formation different chemical compounds such as ferrite, cementite, bornite, martensite identified at layers. Investigations surface defects using dye penetration test corrosion behavior component weight loss method have also conducted. like cracks porosity primarily present in interface upper measured Vickers micro-hardness found wall structures. values flat circular recorded 162.806 HV 172.191 HV, respectively.
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