Accession Number:

AD0776412

Title:

High Strength Eutectic Composites.

Descriptive Note:

Final rept. 1 Jan 71-31 Mar 74,

Corporate Author:

CALIFORNIA UNIV LOS ANGELES SCHOOL OF ENGINEERING AND APPLIED SCIENCE

Personal Author(s):

• Yue,Alfred S.

Report Date:

1974-03-31

Pagination or Media Count:

6.0

Abstract:

Fiberlike Ti-Ti5Ge3 eutectic composites were produced by electron-beam floating zone-melting. The volume fraction of the germanide fiber in the Ti-Ti5Ge3 eutectic mixtures was increased from 19.5 to 34 in agreement with theoretical predictions. The effects of freezing rate and temperature on the mechanical properties of the Ti Ti5Ge3 eutectic composites was investigated. It was found that the room temperature compression strength and tensile modulus were 325,000 psi and 26.5 x 10 to the sixth power psi. At temperatures less than 400C the average tensile strength was 160,000 psi. These properties were superior to any known commercial titanium alloys. The creep and fracture behaviors of these eutectic composites were studied as functions of freezing rate and temperature. In general, these behaviors were in good agreement with those reported from artificially-made fiber-reinforced metal matrix composites. Modified author abstract

Descriptors:

• *Fiber reinforced composites
• *Titanium alloys
• *Germanium alloys
• Compressive properties
• Tensile properties
• Creep
• Fracture(Mechanics)
• Eutectics
• Zone melting

Subject Categories:

• Laminates and Composite Materials
• Metallurgy and Metallography

Distribution Statement:

APPROVED FOR PUBLIC RELEASE