DYNAMIC DEFORMATION AND DAMAGE IN CAST GAMMA-TiAl DURING TYALOR CYLINDER IMPACT: EXPERIMENTS AND MODEL VALIDATION

Conference · Thu Mar 01 00:00:00 EST 2001

OSTI ID:775575

GRAY, G

The dynamic deformation, damage evolution, and cracking in two cast gamma titanium aluminide alloys has been investigated experimentally and theoretically. The purpose of this study was to create and validate experimentally a finite-element model of the high speed impact of a cylindrical {gamma}-TiAl projectile into a steel block in order to evaluate the accuracy of {gamma} constitutive properties used in FEA simulations. In this paper the damage evolution, cracking, and validation of the constitutive response of Ti-48-2-2 and WMS cast gamma alloys is discussed. The utility of validating the high-rate impact behavior of engineering aerospace materials using Taylor cylinder impact testing is detailed.

• Research Organization: Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
• Sponsoring Organization: US Department of Energy (US)
• DOE Contract Number: W-7405-ENG-36
• OSTI ID: 775575
• Report Number(s): LA-UR-01-1276; TRN: AH200121%%96
• Resource Relation: Conference: Conference title not supplied, Conference location not supplied, Conference dates not supplied; Other Information: PBD: 1 Mar 2001
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ACCURACY
ALLOYS
DEFORMATION
PROJECTILES
STEELS
TESTING
TITANIUM
VALIDATION