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- W339366148 abstract "Single pass, full penetration, thick-section (10 cm) electron beam weldments of high integrity were made of 3Cr-1.5Ml-0.1V steel using a 100 kW Sciaky electron beam welder. The weldment was characterized using microhardness measurements, Charpy V-notch impact, tensile, and guided bend tests. Microstructural characterization was done using both optical and electron microscopy. The mechanical properties results showed the electron beam weldments had properties that matched those of the base metal. A hardness minimum within the heat-affected zone (HAZ) was observed on either side of the fusion zone. Such a minimum is commonly observed in ferritic steel weldments, although this region was very narrow compared to the weldments made by other conventional processes. Microstructural characterization of the weld revealed that the fusion zone and immediately surrounding HAZ contained retained austenite between the bainite laths. Further away from the fusion zone, the HAZ structure consisted of bainite and proeutectoid ferrite, which corresponded to the drop in the microhardness, and resulted in a minimum. Tempered bainite was observed beyond this minimum in the HAZ. 14 figs., 2 tabs." @default.
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- W339366148 date "1988-01-01" @default.
- W339366148 modified "2023-09-27" @default.
- W339366148 title "Microstructural characterization and properties of 3Cr-1. 5Mo-0. 1V thick section electron beam welds" @default.
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