A new view of the ultrasonic behavior of cast austenitic steels

Conference · Wed Jan 01 00:00:00 EST 1986

OSTI ID:5825901

Beller, L S

A three-dimensionally anisotropic model of the cast austenitics is proposed and tested experimentally. The model predicts unique propagation modes and directions, which are observed experimentally in centrifugally cast stainless steel (CCSS) specimens, but which are not predicted by the single- preferred-axis model. It accounts for a large share of the difficulties noted in ultrasonic inspection of these materials by conventional techniques. The model also suggests a technique for significant improvement in signal/noise ratio (SNR) and in apparent attenuation; this technique is demonstrated experimentally to give striking improvements in SNR. In addition, a number of previously anomalous behaviors are explained by this model. 10 refs., 6 figs.

• Research Organization: EG and G Idaho, Inc., Idaho Falls (USA)
• DOE Contract Number: AC07-76ID01570
• OSTI ID: 5825901
• Report Number(s): EGG-M-09787; CONF-8611147-5; ON: DE88001538
• Resource Relation: Conference: 8. international conference on NDE in the nuclear industry, Orlando, FL, USA, 17 Nov 1986; Other Information: Paper copy only, copy does not permit microfiche production
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
36 MATERIALS SCIENCE
AUSTENITIC STEELS
ANISOTROPY
ULTRASONIC TESTING
BEAMS
CASTINGS
CRACKS
DOMAIN STRUCTURE
ELASTICITY
GRAIN ORIENTATION
IMAGES
INCIDENCE ANGLE
MONOCRYSTALS
THERMAL FATIGUE
ULTRASONIC WAVES
WAVE PROPAGATION
ACOUSTIC TESTING
ALLOYS
CRYSTAL STRUCTURE
CRYSTALS
FATIGUE
IRON ALLOYS
IRON BASE ALLOYS
MATERIALS TESTING
MECHANICAL PROPERTIES
MICROSTRUCTURE
NONDESTRUCTIVE TESTING
ORIENTATION
SOUND WAVES
STEELS
TENSILE PROPERTIES
TESTING
420500* - Engineering- Materials Testing
360100 - Metals & Alloys