Temperature dependence of the elastic moduli of Kovar and OFHC copper above room temperature
Technical Report
·
OSTI ID:7357480
Experimental results of the ultrasonic longitudinal and shear velocities in 3/4-in. diameter rods of Kovar and OFHC copper are presented for elevated temperatures. An ultrasonic pulse echo technique was used in conjunction with rods of about 12 in. in length. The thermal variation of Young's modulus, shear modulus and Poisson's ratio were calculated from the ultrasonic data. A 6 percent increase in modulus versus temperature was observed for Kovar up to about 450/sup 0/C from which point a steady decrease in modulus versus temperature followed. OFHC copper showed a steady decrease in modulus versus temperature, and it also exhibited permanent room temperature material property changes as a result of annealing the material. (auth)
- Research Organization:
- Sandia Labs., Albuquerque, N.Mex. (USA)
- DOE Contract Number:
- AT(29-1)-789
- OSTI ID:
- 7357480
- Report Number(s):
- SAND-75-0311
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
36 MATERIALS SCIENCE
360103* -- Metals & Alloys-- Mechanical Properties
ACOUSTIC TESTING
ALLOYS
ANNEALING
COBALT ALLOYS
COPPER
ELASTICITY
ELEMENTS
HEAT TREATMENTS
HIGH TEMPERATURE
IRON ALLOYS
IRON BASE ALLOYS
KOVAR
MANGANESE ADDITIONS
MANGANESE ALLOYS
MATERIALS TESTING
MECHANICAL PROPERTIES
METALS
NICKEL ALLOYS
NONDESTRUCTIVE TESTING
POISSON RATIO
SHEAR
TEMPERATURE DEPENDENCE
TENSILE PROPERTIES
TESTING
TRANSITION ELEMENTS
ULTRASONIC TESTING
YOUNG MODULUS
360103* -- Metals & Alloys-- Mechanical Properties
ACOUSTIC TESTING
ALLOYS
ANNEALING
COBALT ALLOYS
COPPER
ELASTICITY
ELEMENTS
HEAT TREATMENTS
HIGH TEMPERATURE
IRON ALLOYS
IRON BASE ALLOYS
KOVAR
MANGANESE ADDITIONS
MANGANESE ALLOYS
MATERIALS TESTING
MECHANICAL PROPERTIES
METALS
NICKEL ALLOYS
NONDESTRUCTIVE TESTING
POISSON RATIO
SHEAR
TEMPERATURE DEPENDENCE
TENSILE PROPERTIES
TESTING
TRANSITION ELEMENTS
ULTRASONIC TESTING
YOUNG MODULUS