Dergi makalesi Açık Erişim
Erturun, V.; Kumru, S.; Fidan, H.
Effect of aging on the microstructure of tungsten inert gas (TIG) welded joints made of a 2024 aluminum alloy was examined in this study. The microstructural features were characterised by optical and scanning electron microscopy techniques. Microhardness tests in different welding zones were conducted in addition to elemental analysis by energy-dispersive X-ray spectroscopy. It was observed that aging improved mechanical properties of the welded joints. TIG welding resulted in grain growth in the weld pool while the grains in the heat affected zones were finer compared to rest of the microstructure. Hardnesses of the welded joints were decreased with coarsened grain size and aging.
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