Sn and Nb modified ultrafine Ti-based bulk alloys with high-strength and enhanced ductility

• Published in: Applied physics letters Vol. 102; no. 6
• Main Authors: Cao, G. H., Schneider, R., Gerthsen, D., Chulist, R., Schaarschuch, R., Oertel, C.-G., Skrotzki, W.
• Format: Journal Article
• Language: English
• Published: United States 11-02-2013
• Subjects: Alloys; COMPRESSION; COMPRESSION STRENGTH; Compressive strength; Crucibles; CRYSTAL STRUCTURE; DUCTILITY; ELECTRON MICROSCOPY; EUTECTICS; IRON ALLOYS; LEVITATION; MATERIALS SCIENCE; MICROSTRUCTURE; Morphology; Niobium; NIOBIUM ADDITIONS; NIOBIUM ALLOYS; Plastic deformation; PLASTICITY; PRESSURE RANGE GIGA PA; TEMPERATURE RANGE 0273-0400 K; Tin; TIN ADDITIONS; TIN ALLOYS; TITANIUM ALLOYS; Titanium base alloys
• ISSN: 0003-6951; 1077-3118
• DOI: 10.1063/1.4792592

Sn and Nb modified ultrafine eutectic Ti−Fe alloys with high strength and plasticity prepared by cold crucible levitation melting were tested in compression at room temperature. (Ti70.5Fe29.5)93.15Sn3.85Nb3 alloy exhibited an ultimate compressive strength of 2.36 GPa at 15% plastic strain. Electron microscopy revealed that lamellar structures in Ti70.5Fe29.5 alloy could be tailored by the addition of Sn and Nb to obtain a globular structure. The microstructural refinement, morphology of phase constituents, and their relationships to the mechanical properties are discussed.