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Microstructural Effects on the Deformation and Fracture of the Alloy Ti-25Al-10Nb-3B-1Mo
The effects of microstructure and temperature on tensile and fracture behavior were explored for the titanium aluminide alloy Ti-25Al-lONb-3V-lMo (atomic percent). Three microstructures were selected for this study in an attempt to determine the role of the individual microstructural constituents. the three microstructures studied were an alpha-2 + beta processed microstructure with a fine Widmanstaetten microstructure, a beta processed microstructure with a fine Widmanstaetten microstructure, and a beta processed microstructure with a coarse Widmanstaetten microstructure. Tensile testing of both round and flat specimens was conducted in vacuum at elevated temperature and in air at room and elevated temperatures. Extensive fractography and specimen sectioning were used to study tensile deformation and the effects of environment on this alloy. Room temperature fracture toughness testing using compact tension specimens was conducted. Elevated temperature toughness testing was performed using J-bend bar specimens in an air environment. Again, extensive fractography and specimen sectioning were used to study the elevated temperature toughening mechanisms of this alloy.... Titanium, Titanium aluminide, Intermetallic, Fracture toughness, Tensile behavior, Fractography environmental interaction.
Microstructural Effects on the Deformation and Fracture of the Alloy Ti-25Al-10Nb-3B-1Mo
The effects of microstructure and temperature on tensile and fracture behavior were explored for the titanium aluminide alloy Ti-25Al-lONb-3V-lMo (atomic percent). Three microstructures were selected for this study in an attempt to determine the role of the individual microstructural constituents. the three microstructures studied were an alpha-2 + beta processed microstructure with a fine Widmanstaetten microstructure, a beta processed microstructure with a fine Widmanstaetten microstructure, and a beta processed microstructure with a coarse Widmanstaetten microstructure. Tensile testing of both round and flat specimens was conducted in vacuum at elevated temperature and in air at room and elevated temperatures. Extensive fractography and specimen sectioning were used to study tensile deformation and the effects of environment on this alloy. Room temperature fracture toughness testing using compact tension specimens was conducted. Elevated temperature toughness testing was performed using J-bend bar specimens in an air environment. Again, extensive fractography and specimen sectioning were used to study the elevated temperature toughening mechanisms of this alloy.... Titanium, Titanium aluminide, Intermetallic, Fracture toughness, Tensile behavior, Fractography environmental interaction.
Microstructural Effects on the Deformation and Fracture of the Alloy Ti-25Al-10Nb-3B-1Mo
C. H. Ward (author)
1992
211 pages
Report
No indication
English
Nonferrous Metals & Alloys , Microstructure , Titanium aluminide , Air , Deformation , Environments , Fractography , Interactions , Room temperature , Temperature , Tension , Toughness , Vacuum , Titanium alloys , Tensile properties , Fracture(Mechanics) , Niobium , Molybdenum , Vanadium , Metallurgy , Ductility , Aluminum alloys , J-Bend bar , Slip behavior
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Interface phase in ~2 and B~2 boundaries in Ti-25Al-10Nb-3V-1Mo alloy
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