Microstructural Evolution of AA7449 Refined by Intensive shearing
Haghayeghi, “Microstructural Evolution of AA7449 Refined by Intensive shearing”, Metals and Materials International, Vol.18, 2012, PP.777-782.
Many aerospace alloys are sensitive to their composition thus cannot be chemically grain refined. In addition, only 1% grain refiners can act as nuclei for refining the structure. In this paper, physical refinement by intensive shearing above liquidus as an alternative technique will be investigated for AA7449 aerospace alloy. The results can open a new gateway for aerospace industry for refining their microstructure.