Environmental effect on the mechanical properties of Ti-25Al-10Nb-3v-1Mo

The mechanical properties of Ti-23Al-10Nb-3V-1Mo, with a microstructure optimized for room temperature ductility and strength, show strong indications of being environmentally sensitive, in much the same way as other transition metal aluminides. Chip formation during machining and microstructural pu...

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Published in:Scripta materialia 1997-11, Vol.37 (9), p.1323-1328
Main Authors: Frasier, F.Robert, Hirth, J.P.
Format: Article
Language:English
Subjects:
Applied sciences
Cross-disciplinary physics: materials science
rheology
Exact sciences and technology
Materials science
Metals. Metallurgy
Other heat and thermomechanical treatments
Physics
Treatment of materials and its effects on microstructure and properties
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Hirth, J.P.
description The mechanical properties of Ti-23Al-10Nb-3V-1Mo, with a microstructure optimized for room temperature ductility and strength, show strong indications of being environmentally sensitive, in much the same way as other transition metal aluminides. Chip formation during machining and microstructural pullout during polishing/grinding operations is strongly affected by the use of non-aqueous coolants. Evidence is presented that clearly shows an environmental effect on elongation to failure during uniaxial tensile loading and on K sub IC . Preliminary evidence also indicates that permanent deformation in this alloy may be due to microcracking or other anelastic processes, rather than true plastic deformation.
doi_str_mv 10.1016/S1359-6462(97)00257-1
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subjects Applied sciences
Cross-disciplinary physics: materials science
rheology
Exact sciences and technology
Materials science
Metals. Metallurgy
Other heat and thermomechanical treatments
Physics
Treatment of materials and its effects on microstructure and properties
title Environmental effect on the mechanical properties of Ti-25Al-10Nb-3v-1Mo
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