Microstructure response to elevated temperature compression of XD{reg_sign} TiB{sub 2} reinforced Ti-48Al(at.%) composites

Book · Sat Dec 30 23:00:00 EST 1995

OSTI ID:225118

Chin, E S.C.; Ryan, Jr, K F ^[1]; Biederman, R R ^[2]

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1. Army Research Lab., Watertown, MA (United States). Materials Directorate
2. Worcester Polytechnic Inst., MA (United States)

Microstructural evolution in elevated temperature compression test samples of a Ti-48Al(at.%) and titanium diboride (TiB{sub 2}) reinforced Ti-48Al(at.%) composites was investigated. During the high temperature deformation process, breakdown of the initial lamellar microstructure is associated with slip, twinning and recrystallization processes. The stress-strain response from the compression testing correlated well with the deformation mechanisms identified from detailed microstructural analysis. The effect of the reinforcement in homogenization of the microstructure during thermomechanical deformation will be discussed.

• OSTI ID: 225118
• Report Number(s): CONF-950201--; ISBN 0-87339-304-X
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ALUMINIUM ALLOYS
COMPOSITE MATERIALS
DEFORMATION
DISLOCATIONS
EXPERIMENTAL DATA
FLOW STRESS
GRAIN BOUNDARIES
INTERMETALLIC COMPOUNDS
LAMELLAE
MICROSTRUCTURE
NUCLEATION
OPTICAL MICROSCOPY
PLASTICITY
RECRYSTALLIZATION
SCANNING ELECTRON MICROSCOPY
SLIP
STRAIN HARDENING
STRAIN RATE
TEMPERATURE DEPENDENCE
TITANIUM ALLOYS
TITANIUM BORIDES
TRANSMISSION ELECTRON MICROSCOPY
TWINNING