Physical and Thermo-Mechanical Behaviour of Adansonia Digitata-Glass Fibres and Ceramic Hybrid Epoxy Composite

Dagwa, Ishaya Musa; Egege, Chigozirim McHenry; Omiogbemi, Ibrahim Momoh‐Bello; Arogundade, Adiat Ibironke

doi:10.1016/j.matpr.2020.12.1230

Cited by 3 publications

(1 citation statement)

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“…Samples were heated from 30 to 1000 °C at heating rates of 10 °C/min. The thermal decomposition, as well as samples’ weight loss at specific temperatures, were evaluated from the TGA graphs following the approaches mentioned by Wang et al 27 , Xu et al 28 , and Dagwa et al 29 .…”

Section: Methodsmentioning

confidence: 99%

Mechanical properties and corrosion behaviour of duplex stainless steel weldment using novel electrodes

Omiogbemi

Yawas

Das

et al. 2022

Sci Rep

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Mechanical and corrosion properties of welded duplex stainless steel (DSS) structures are of paramount consideration in many engineering applications. The current research investigates the mechanical properties and corrosion integrity of duplex stainless-steel weldment in a simulated 3.5% NaCl environment using specially developed novel electrodes without the addition of alloying elements to the flux samples. Two different types of fluxes having basicity indexes of 2.40 and 0.40 were used to coat E1 and E2 electrodes respectively for DSS plate welding. The thermal stability of the formulated flux was evaluated using thermogravimetric analysis. The chemical composition, using optical emission spectroscopy, and the mechanical and corrosion properties of the welded joints were evaluated as per different ASTM standards. X-ray diffraction was used to find out the phases present in the DSS welded joints while a scanning electron equipped with EDS was used for microstructural examination of the weldments. The ultimate tensile strength of welded joints made using the E1 electrode was in the range of 715–732 MPa and that of the E2 electrode was found to be 606–687 MPa. The hardness was increased with increased welding current from 90 to 110 A. The welded joint with E1 electrode coated with basic flux has better mechanical properties. The steel structure in 3.5% NaCl environment possesses substantial resistance to corrosion attack. This validates the performance of the welded joints made by the newly developed electrode. The results are discussed on the basis of the depletion of alloying elements such as Cr and Mo observed from the weldments with the coated electrodes E1 and E2 as well as precipitation of the Cr2N in the welded joints made by E1 and E2 electrodes.

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Section: Methodsmentioning

confidence: 99%