Accession Number:

AD0817804

Title:

THE LATTICE PARAMETERS OF TITANIUM AT CRYOGENIC TEMPERATURES.

Descriptive Note:

Master's thesis,

Corporate Author:

AIR FORCE INST OF TECH WRIGHT-PATTERSON AFB OH SCHOOL OF ENGINEERING

Personal Author(s):

• Ebneter, Arnold E.

Report Date:

1967-06-01

Pagination or Media Count:

42.0

Abstract:

The lattice parameters of high purity electrolytic titanium less than 75 BHN, commercially pure titanium, and Ti-4Al alloy were measured over a temperature range from 4.2 K to 300 K using x-ray diffraction techniques. Both the a and c lattice parameters were found to decrease uniformly from 300 K down to 100 K. From 100 K to 4.2 K the a parameter continues to decrease at a reduced rate and the c parameter remains constant. The development of a technique for the accurate and rapid determination of changes in lattice parameters with temperature was a special goal of this study and a simplified method of computing lattice parameters is presented. Author

Descriptors:

• *CRYSTAL LATTICES)
• (*TITANIUM
• (*CRYOGENICS
• TITANIUM)
• PHYSICAL PROPERTIES
• DUCTILITY
• X RAY DIFFRACTION
• LOW TEMPERATURE
• THERMAL EXPANSION
• MATHEMATICAL MODELS
• ALLOYS
• TITANIUM ALLOYS
• ALUMINUM ALLOYS
• POWDER METALS

Subject Categories:

• Crystallography

Distribution Statement:

APPROVED FOR PUBLIC RELEASE