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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
Electron beam and metal active gas welding of ultra-high-strength steel S1100MC: influence of heat input
Abstract
<p>This study investigates the microstructure and the hardness of thermomechanically processed joints of ultra-high-strength steel (UHSS) S1100MC, which were butt-welded by means of metal active gas (MAG) welding and electron beam welding (EBW). In MAG welding, the microstructure of the fusion zone (FZ) consisted predominantly of fine ferrite grains. Due to the formation of martensite/austenite (M/A) constituents, the hardness of the reheated weld metal (WM) was higher for vertical-up (PF) than for horizontal flat (PA) welding position. The microstructure of the heat-affected zone (HAZ) of the last welding pass consisted mainly of hard martensite in consequence of fast cooling. However, necklace-type M/A constituents and bainite phases of lower hardness formed when the HAZ of prior welding passes were reheated by subsequent welding passes. The microstructure of the EBW fusion zone was dominated by martensite. Therefore, the fusion zone had considerable higher hardness than the base material (BM). The width of the HAZ in EBW weldments is less than in MAG weldments.</p>