Accession Number:

AD0625475

Title:

POINT DEFECTS AND MECHANICAL PROPERTIES OF COLUMBIUM.

Descriptive Note:

Final rept. 15 Feb 62-30 Nov 65,

Corporate Author:

COMISION NACIONAL DE ENERGIA ATOMICA BUENOS AIRES (ARGENTINA) DEPARTAMENTO DE METALURGIA

Personal Author(s):

• Coll,Jorge A.
• Di Primio,Juan C.
• Bisogni,Edgardo

Report Date:

1965-11-01

Pagination or Media Count:

39.0

Abstract:

The results of two and a half years of experimental work are presented in the form of conclusions, five tables and nine graphs. Also included are photographs and diagrams of the experimental set up. Results of R vs T for Cb show agreement with others up to 1000C results can be expressed by RsubT R OC 1 - aT - bT squared which differs from linear relationship obtained elsewhere. Because of quenching some kind of defects can be retained in Cb containing certain amount of interstitial impurities. A minimum dose of 1.10 to the 17th power neutronssq cm is necessary to produce a measurable increase in the hardness of polycrystalline Cb. Author

Descriptors:

• *RADIATION
• DAMAGE
• NIOBIUM
• ARGENTINA
• HIGH TEMPERATURE
• REACTOR MATERIALS
• HARDNESS
• QUENCHING
• IMPURITIES
• CRYSTAL DEFECTS
• DEFORMATION
• ELECTRICAL RESISTANCE
• MECHANICAL PROPERTIES
• EXPERIMENTAL DATA
• EXPERIMENTAL DATA

Subject Categories:

• Metallurgy and Metallography
• Radioactivity, Radioactive Wastes and Fission Products
• Fission Reactor Materials

Distribution Statement:

APPROVED FOR PUBLIC RELEASE