Elastic-constant variability in stainless-steel 304

Journal Article · Mon Dec 31 23:00:00 EST 1979 · J. Appl. Phys.; (United States)

DOI:https://doi.org/10.1063/1.327371· OSTI ID:5662409

Ledbetter, H M; Frederick, N V; Austin, M W

Variability of elastic constants in stainless-steel 304 was determined by measuring longitudinal and transverse ultrasonic velocities in 20 samples acquired randomly. Three kinds of variations: sample to sample, directional within a sample, and repeated measurements on a single sample: are reported for four elastic constants: the bulk modulus, Young's modulus, shear modulus, and Poisson's ratio. Because of surprisingly small variations, 1% or less, the principal problem became measurement sensitivity and reproducibility. To overcome this problem, a high-resolution measurement system was devised using general-purpose equipment augmented with a very simple impedance-transforming amplifier and an FET transmission gate. With this system the often-reported troublesome transit-time correction disappeared. Effects due to frequency and directionality were negligible.

• Research Organization: Fracture and Deformation Division, National Bureau of Standards, Boulder, Colorado 80303
• OSTI ID: 5662409
• Journal Information: J. Appl. Phys.; (United States), Journal Name: J. Appl. Phys.; (United States) Vol. 51:1; ISSN JAPIA
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360103* -- Metals & Alloys-- Mechanical Properties
ALLOYS
AMPLIFIERS
CHROMIUM ALLOYS
CHROMIUM STEELS
CHROMIUM-NICKEL STEELS
COMPARATIVE EVALUATIONS
CORROSION RESISTANT ALLOYS
ELASTICITY
ELECTRONIC EQUIPMENT
FIELD EFFECT TRANSISTORS
HEAT RESISTANT MATERIALS
HEAT RESISTING ALLOYS
IRON ALLOYS
IRON BASE ALLOYS
MATERIALS
MECHANICAL PROPERTIES
NICKEL ALLOYS
POISSON RATIO
SEMICONDUCTOR DEVICES
SENSITIVITY
SOUND WAVES
STAINLESS STEEL-304
STAINLESS STEELS
STEELS
TENSILE PROPERTIES
TRANSISTORS
ULTRASONIC WAVES
VELOCITY
YOUNG MODULUS