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Tümer, Mustafa
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Publications (7/7 displayed)
- 2024Welding of S1100 Ultra high-Strength Steel Plates with Matching Metal-Cored Filler Wirecitations
- 2022Undermatched Welding of Ultra-High-Strength Steel S1100 with Metal-Cored Wirecitations
- 2022Electron beam and metal active gas welding of ultra-high-strength steel S1100MC: influence of heat inputcitations
- 2022Mechanical and microstructural characterization of solid wire undermatched multilayer welded S1100MC in different positionscitations
- 2022Mechanical and microstructural properties of S1100 UHSS welds obtained by EBW and MAG weldingcitations
- 2021Residual Stresses, Microstructure, and Mechanical Properties of Electron Beam Welded Thick S1100 Steelcitations
- 2020Microstructural Characterization of Thick Walled Ultra High Strength Steel S1100 Welded in Different Weld Positions
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article
Welding of S1100 Ultra high-Strength Steel Plates with Matching Metal-Cored Filler Wire
Abstract
<p>This study investigates the relationship between the microstructure and the mechanical properties and the residual stresses of thermomechanically rolled, butt-welded S1100MC ultra high-strength steel plates. Matching metal-cored filler wires are used for metal active gas welding of the plates in horizontal and vertical-up positions. The effect of the heat input on the microstructures of both the weld metal (WM) and the heat-affected zone (HAZ) is studied in detail. The microstructure of the WM consists of different types of ferrite, but the microstructure of the HAZ predominantly consists of fresh martensite at the top and bottom areas. Structure and size of the prior austenite grain boundaries are dependent on the welding positions and affect the impact toughness of the welds. HAZ of the weld produced in vertical-up position is under intensive tensile residual stresses next to the fusion line. Even with matching filler wires, the strength of the welds is insufficient, and fracture of the weld metal occurs because the extended cooling time leads to the formation of acicular ferrite instead of martensite.</p>