Nondestructive examination of deformed steel and nickel by positron annihilation
Conference
·
OSTI ID:6067149
Positron Annihilation (PA) Doppler broadening measurements were made on cold-rolled and fatigue cycled 316 stainless steel. PA measurements were made after isochronal annealing steps following deformation at 294 K of both 316 SS and high purity nickel. To understand the response of PA to microstructural changes, specimens were examined by transmission electron microscopy. It is concluded that in nickel both vacancies and dislocations produced by cold working can act as positron traps. In 316 SS, the PA response is principally due to vacancies, and only small effects can be attributed to trapping at dislocations.
- Research Organization:
- Sandia Labs., Albuquerque, NM (USA)
- DOE Contract Number:
- EY-76-C-04-0789
- OSTI ID:
- 6067149
- Report Number(s):
- SAND-79-0636C; CONF-790437-1
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
36 MATERIALS SCIENCE
360102 -- Metals & Alloys-- Structure & Phase Studies
360103* -- Metals & Alloys-- Mechanical Properties
42 ENGINEERING
420500 -- Engineering-- Materials Testing
ALLOYS
ANNEALING
ANNIHILATION
ANTILEPTONS
ANTIMATTER
ANTIPARTICLES
BASIC INTERACTIONS
CHROMIUM ALLOYS
CHROMIUM STEELS
CHROMIUM-NICKEL STEELS
CORROSION RESISTANT ALLOYS
CRYSTAL DEFECTS
CRYSTAL STRUCTURE
DEFORMATION
DISLOCATIONS
DOPPLER BROADENING
ELECTROMAGNETIC INTERACTIONS
ELECTRON MICROSCOPY
ELEMENTARY PARTICLES
ELEMENTS
FABRICATION
FATIGUE
FERMIONS
HEAT RESISTANT MATERIALS
HEAT RESISTING ALLOYS
HEAT TREATMENTS
INTERACTIONS
IRON ALLOYS
IRON BASE ALLOYS
LEPTONS
LINE BROADENING
LINE DEFECTS
MATERIALS
MATERIALS TESTING
MATERIALS WORKING
MECHANICAL PROPERTIES
MEDIUM TEMPERATURE
METALS
MICROSCOPY
MICROSTRUCTURE
MOLYBDENUM ALLOYS
NICKEL
NICKEL ALLOYS
NONDESTRUCTIVE TESTING
POINT DEFECTS
POSITRONS
ROLLING
STAINLESS STEEL-316
STAINLESS STEELS
STEELS
TEMPERATURE DEPENDENCE
TESTING
TRANSITION ELEMENTS
TRANSMISSION ELECTRON MICROSCOPY
TRAPS
VACANCIES
360102 -- Metals & Alloys-- Structure & Phase Studies
360103* -- Metals & Alloys-- Mechanical Properties
42 ENGINEERING
420500 -- Engineering-- Materials Testing
ALLOYS
ANNEALING
ANNIHILATION
ANTILEPTONS
ANTIMATTER
ANTIPARTICLES
BASIC INTERACTIONS
CHROMIUM ALLOYS
CHROMIUM STEELS
CHROMIUM-NICKEL STEELS
CORROSION RESISTANT ALLOYS
CRYSTAL DEFECTS
CRYSTAL STRUCTURE
DEFORMATION
DISLOCATIONS
DOPPLER BROADENING
ELECTROMAGNETIC INTERACTIONS
ELECTRON MICROSCOPY
ELEMENTARY PARTICLES
ELEMENTS
FABRICATION
FATIGUE
FERMIONS
HEAT RESISTANT MATERIALS
HEAT RESISTING ALLOYS
HEAT TREATMENTS
INTERACTIONS
IRON ALLOYS
IRON BASE ALLOYS
LEPTONS
LINE BROADENING
LINE DEFECTS
MATERIALS
MATERIALS TESTING
MATERIALS WORKING
MECHANICAL PROPERTIES
MEDIUM TEMPERATURE
METALS
MICROSCOPY
MICROSTRUCTURE
MOLYBDENUM ALLOYS
NICKEL
NICKEL ALLOYS
NONDESTRUCTIVE TESTING
POINT DEFECTS
POSITRONS
ROLLING
STAINLESS STEEL-316
STAINLESS STEELS
STEELS
TEMPERATURE DEPENDENCE
TESTING
TRANSITION ELEMENTS
TRANSMISSION ELECTRON MICROSCOPY
TRAPS
VACANCIES