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- W2044484549 abstract "The first part of this work presented the results of the experimental determination of residual stresses along top joints in pipes. The purpose of the second part will be to present a critical evaluation of the microstructure and hardness of the welded joints for pipes with small diameter used in oil refineries, aiming to correlate the results with the residual stresses. The methodology consists of welding pipes with a diameter of 2 in., using a manual TIG process. AWS ER70-S3 addition metal with a 2.5 mm diameter was used. An electronic welding source and a data acquisition system for control were used to control the welding parameters. Metallographic samples were conventionally prepared and electropolished using chloride acid solution. Optical microscopy and scanning electron microscopy were used to evaluate the microstructure. Microhardness tests were made along the weld. The results show that the combination of heat cycles between the root and the finish with low heat support caused significant reinin..." @default.
- W2044484549 created "2016-06-24" @default.
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- W2044484549 date "2010-03-01" @default.
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- W2044484549 title "Welding of the ASTM A106 Gr. B steel pipes for high-temperature service – part 2 – microstructure and hardness" @default.
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- W2044484549 doi "https://doi.org/10.1080/09507110902843958" @default.
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