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The weldability of AA7075-T651 during keyhole laser and laser–arc hybrid welding was studied using microstructural and X-ray radiography techniques. The results showed that the application of cold wire laser welding reduced macroporosity, while the problem of heat-affected zone (HAZ) cracking was appreciably minimized by modifying the amount of heat in the HAZ. It was also found that the welding condition...
A study of microstructural and geometrical characteristics of cold metal transfer (CMT) clads in nickel-base INCONEL 718 superalloy was carried out. The CMT process was demonstrated to be suitable for low-dilution cladding of INCONEL 718 superalloy, with the ability to produce defect-free clads, and has a great potential to be used as a repair method for the alloy. Microstructural study revealed that...
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