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

Journal Article · Sat Nov 01 04:00:00 EST 1997 · Scripta Materialia

DOI:https://doi.org/10.1016/S1359-6462(97)00257-1· OSTI ID:554035

Frasier, F R ^[1]; Hirth, J P ^[2]

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1. Northwest Technical Industries Inc., Sequim, WA (United States)
2. Washington State Univ., Pullman, WA (United States). School of Mechanical and Materials Engineering

The mechanical properties of Ti-23Al-10Nb-3V-1Mo, with a microstructure optimized for room temperature ductility and strength, shows 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.

• Sponsoring Organization: National Science Foundation, Washington, DC (United States)
• OSTI ID: 554035
• Journal Information: Scripta Materialia, Journal Name: Scripta Materialia Journal Issue: 9 Vol. 37; ISSN 1359-6462; ISSN SCMAF7
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ALUMINIUM ALLOYS
ELONGATION
FRACTURE PROPERTIES
HEAT TREATMENTS
INTERMETALLIC COMPOUNDS
MECHANICAL PROPERTIES
MOISTURE
MOLYBDENUM ALLOYS
NIOBIUM ALLOYS
SAMPLE PREPARATION
TITANIUM ALLOYS
VANADIUM ALLOYS
YIELD STRENGTH