Published June 2010 | Version v1
Miscellaneous Metadata-only

Ultrasonic nondestructive evaluation of stress corrosion cracks in welded parts of Ni-based alloy

Creators

  • 1. Tohoku Univ., Sendai, Miyagi (Japan)

Description

In atomic power plants, it has been required to develop an accurate nondestructive evaluation method for stress corrosion cracks (SCCs) generated in welded parts of Ni-based alloy. In this paper, we formed SCC in welded metal of Ni-based alloy (Inconel 600) under tetrathionate solution, and imaged them using a method for closed-crack imaging, SPACE (subharmonic phased array for crack evaluation) developed by us. As a result, we found that the SCCs thus formed were dominantly open. Then we accurately measured their depths improving linear ultrasonic phased array. However, in actual plants, some SCCs were underestimated when they were dominantly closed. In future, it is necessary to improve the evaluation method for closed SCCs. (author)

Part of:
The 15th national symposium on power and energy systems (SPES 2010)

Additional details

Publishing Information

Imprint Title
The 15th national symposium on power and energy systems (SPES 2010)
Imprint Pagination
503 p.
Journal Page Range
p. 337-338

Conference

Title
15. national symposium on power and energy systems
Acronym
SPES 2010
Dates
21-22 Jun 2010
Place
Tokyo (Japan)

INIS

Country of Publication
Japan
Country of Input or Organization
Japan
INIS RN
44009082
Subject category
S36: MATERIALS SCIENCE;
Resource subtype / Literary indicator
Conference, Non-conventional Literature
Descriptors DEI
CRACKS; EVALUATION; IMAGES; INCONEL 600; NUCLEAR POWER PLANTS; STRESS CORROSION; ULTRASONIC TESTING; WELDED JOINTS
Descriptors DEC
ACOUSTIC TESTING; ALLOY-NI76CR15FE8; ALLOYS; ALUMINIUM ADDITIONS; ALUMINIUM ALLOYS; CHEMICAL REACTIONS; CHROMIUM ALLOYS; CORROSION; CORROSION RESISTANT ALLOYS; HEAT RESISTANT MATERIALS; HEAT RESISTING ALLOYS; INCONEL ALLOYS; IRON ALLOYS; JOINTS; MATERIALS; MATERIALS TESTING; NICKEL ALLOYS; NICKEL BASE ALLOYS; NIMONIC; NONDESTRUCTIVE TESTING; NUCLEAR FACILITIES; POWER PLANTS; TESTING; THERMAL POWER PLANTS; TITANIUM ADDITIONS; TITANIUM ALLOYS; TRANSITION ELEMENT ALLOYS

Optional Information

Notes
8 refs., 4 figs.