Article ID Journal Published Year Pages File Type
7990342 Journal of Alloys and Compounds 2018 5 Pages PDF
Abstract
Combined with the decomposition of martensitic phase and the globularization of close-packed hexagonal α phase, TC4 alloy with ultrafine duplex microstructure and excellent mechanical properties is prepared by using a novel thermo-mechanical technique of plastic deformation and aging treatment. The dual phase of α and martensitic is obtained by quenching from α+β phase region. Then, the ultrafine equiaxial microstructure is come from the globularization of deformed α phase, and the ultrafine acicular microstructure forms by the decomposition of deformed martensitic phase during aging treatment. Compared with lath microstructure, equiaxial microstructure and coarse duplex microstructure, the ultrafine duplex microstructure of TC4 alloy possesses ultrahigh strength of 1350 MPa and good elongation of 11%.
Related Topics
Physical Sciences and Engineering Materials Science Metals and Alloys
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