Dislocation-solute atom interactions in alloys. Technical progress report, February 1, 1975--January 31, 1976
New results were obtained in two major project areas: (1) surface oxide softening and solute gradients in niobium and tantalum, and (2) mechanical properties of Nb--H and Nb--D alloys. The important results include: (a) observation and characterization of an extremely large softening and ductilizing effect of bcc metals (niobium and tantalum) by application of thin (500 to 1000 A) oxide films coupled with injection of a high density of mobile dislocations; (b) determination of the relative strengthening ductility changes caused by hydrogen and deuterium in niobium. (auth)
- Research Organization:
- Case Western Reserve Univ., Cleveland, Ohio (USA). Dept. of Metallurgy and Materials Science
- NSA Number:
- NSA-33-012604
- OSTI ID:
- 4110111
- Report Number(s):
- COO--1676-39
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
*DEUTERIUM-- METALLURGICAL EFFECTS
*HYDROGEN-- METALLURGICAL EFFECTS
*NIOBIUM-- MECHANICAL PROPERTIES
*OXYGEN-- METALLURGICAL EFFECTS
*TANTALUM-- MECHANICAL PROPERTIES
360103* --Materials--Metals & Alloys--Mechanical Properties
DISLOCATIONS
DUCTILITY
MONOCRYSTALS
N50230* --Metals
Ceramics
& Other Materials--Metals & Alloys--Properties
Structure & Phase Studies
SHEAR
TEMPERATURE DEPENDENCE
*HYDROGEN-- METALLURGICAL EFFECTS
*NIOBIUM-- MECHANICAL PROPERTIES
*OXYGEN-- METALLURGICAL EFFECTS
*TANTALUM-- MECHANICAL PROPERTIES
360103* --Materials--Metals & Alloys--Mechanical Properties
DISLOCATIONS
DUCTILITY
MONOCRYSTALS
N50230* --Metals
Ceramics
& Other Materials--Metals & Alloys--Properties
Structure & Phase Studies
SHEAR
TEMPERATURE DEPENDENCE