Mechanical properties of 800-MeV proton-irradiated metals
Accelerator beam line components and spallation neutron targets operate in an irradiation environment where changes in mechanical properties can adversely affect component integrity. The present work presents a preliminary study of the effects of low fluences (10/sup 19/ to 10/sup 20/ p/cm/sup 2/) of 800-MeV protons on the yield strength, tensile strength, and ductility of samples of 304 stainless steel, Alloy 718, molybdenum, and tantalum. Tensile samples (0.75 or 1.6 mm thick) were directly water cooled during irradiation and were tested at room temperature. For the 304 stainless steel and annealed Alloy 718, the yield strengths increased by about a factor of 3 and 1.6, respectively, while the ductility decreased approx. 30 and 40 percent. In the bcc metals (tantalum and molybdenum) the yield strengths increased by at least a factor of 2. Tantalum samples retained significant ductility at room temperature, while several molybdenum specimens broke at less than 0.2 percent strain. These irradiation-induced changes at low proton fluences should not impair the usefulness of these materials (other than molybdenum) in accelerator environments.
- Research Organization:
- Los Alamos National Lab., NM (USA)
- DOE Contract Number:
- W-7405-ENG-36
- OSTI ID:
- 5341613
- Report Number(s):
- LA-UR-82-672; CONF-820628-1; ON: DE82011985
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
36 MATERIALS SCIENCE
360106* -- Metals & Alloys-- Radiation Effects
43 PARTICLE ACCELERATORS
430303 -- Particle Accelerators-- Experimental Facilities & Equipment
ACCELERATOR FACILITIES
ACCELERATORS
ALLOYS
BARYONS
BEAMS
CHROMIUM ALLOYS
CHROMIUM STEELS
CHROMIUM-NICKEL STEELS
CORROSION RESISTANT ALLOYS
ELEMENTARY PARTICLES
ELEMENTS
ENERGY RANGE
FAST NEUTRONS
FERMIONS
HADRONS
HEAT RESISTANT MATERIALS
HEAT RESISTING ALLOYS
INCONEL 718
INCONEL ALLOYS
IRON ALLOYS
IRON BASE ALLOYS
LAMPF LINAC
LINEAR ACCELERATORS
MATERIALS
MECHANICAL PROPERTIES
MESON FACTORIES
METALS
MEV RANGE
MEV RANGE 100-1000
MOLYBDENUM
MOLYBDENUM ALLOYS
NEUTRONS
NICKEL ALLOYS
NICKEL BASE ALLOYS
NIOBIUM ALLOYS
NUCLEON BEAMS
NUCLEONS
PARTICLE BEAMS
PHYSICAL RADIATION EFFECTS
PROTON BEAMS
RADIATION EFFECTS
STAINLESS STEEL-304
STAINLESS STEELS
STEELS
TANTALUM
TENSILE PROPERTIES
TRANSITION ELEMENTS
360106* -- Metals & Alloys-- Radiation Effects
43 PARTICLE ACCELERATORS
430303 -- Particle Accelerators-- Experimental Facilities & Equipment
ACCELERATOR FACILITIES
ACCELERATORS
ALLOYS
BARYONS
BEAMS
CHROMIUM ALLOYS
CHROMIUM STEELS
CHROMIUM-NICKEL STEELS
CORROSION RESISTANT ALLOYS
ELEMENTARY PARTICLES
ELEMENTS
ENERGY RANGE
FAST NEUTRONS
FERMIONS
HADRONS
HEAT RESISTANT MATERIALS
HEAT RESISTING ALLOYS
INCONEL 718
INCONEL ALLOYS
IRON ALLOYS
IRON BASE ALLOYS
LAMPF LINAC
LINEAR ACCELERATORS
MATERIALS
MECHANICAL PROPERTIES
MESON FACTORIES
METALS
MEV RANGE
MEV RANGE 100-1000
MOLYBDENUM
MOLYBDENUM ALLOYS
NEUTRONS
NICKEL ALLOYS
NICKEL BASE ALLOYS
NIOBIUM ALLOYS
NUCLEON BEAMS
NUCLEONS
PARTICLE BEAMS
PHYSICAL RADIATION EFFECTS
PROTON BEAMS
RADIATION EFFECTS
STAINLESS STEEL-304
STAINLESS STEELS
STEELS
TANTALUM
TENSILE PROPERTIES
TRANSITION ELEMENTS