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Effect of vibration on weld metal hardness and toughness
Bogdan Pučko, Vladimir Gliha, 2005, original scientific article

Abstract: Vibration of welded parts is usually applied to achieve effects similar to thermal stress relief. With vibration, it is not only residual stresses that are affected. Using two different welding processes, the influence of vibration on hardness and toughness of the weld was measured. For each weldingprocess, two series of Charpy specimens were made over the temperature range from -60 to +20°C. The only difference between the two series was in performing welding with or without vibration. Slight differences in weld metalhardness were observed. Toughness measurements show an increase in impacttoughness and a significant increase in fracture toughness in samples which were vibrated during welding.
Keywords: welding, welded joints, residual stresses, vibrational stress relief, hardness, toughness, steel
Published: 01.06.2012; Views: 1710; Downloads: 79
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