Deformation behavior and effects of oxygen in Ti-6Al-4V alloy

Thesis/Dissertation · Tue Jan 01 00:00:00 EST 1985

OSTI ID:5535459

Lee, Y T

A microstructural and microchemical investigation of ..cap alpha.., ..beta.., or ..cap alpha..'' phases in a Ti-6Al-4V alloy was performed using optical and analytical electron microscopy. Also, the mechanical properties were evaluated and dynamic Young's modulus and damping capacity was measured. The emphasis was on understanding the deformation behavior of the various phases under tensile, compressive and cyclic straining. The phase conditions were obtained through various solution- and aging heat treatment. An attempt was made to correlate variation of Young's modulus and damping with phase transformation and with oxygen concentration in the alloy. Specimens used in this work were mostly blended elemental sintered Ti-6Al-4V alloy which was shown to be over 99% of full density. The microstructure consisted of a combination of equiaxed and low aspect ratio lamellar ..cap alpha.. grains. Chemical homogeneity was achieved within individual ..cap alpha.. or ..beta.. regions with slight compositional fluctuations between different grains.

• Research Organization: Case Western Reserve Univ., Cleveland, OH (USA)
• OSTI ID: 5535459
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360102* -- Metals & Alloys-- Structure & Phase Studies
360103 -- Metals & Alloys-- Mechanical Properties
ALLOYS
ALUMINIUM ALLOYS
CRYSTAL STRUCTURE
DAMPING
DEFORMATION
ELEMENTS
HEAT TREATMENTS
MECHANICAL PROPERTIES
MICROSTRUCTURE
NONMETALS
OXYGEN
PHASE STUDIES
TITANIUM ALLOYS
VANADIUM ALLOYS
YOUNG MODULUS