Improvement of ultrasonic characteristics in butt-welded joint of austenitic stainless steel using magnetic stirring method
- Ishikawajima-Harima Heavy Industries Co., Ltd., Yokohama (Japan)
Magnetic Stirring Method of Tungsten Inert Gas(TIG) Welding are applied to butt-welded joint of austenitic stainless steel. The purpose of this method is to refine the welded structure and to improve the ultrasonic characteristics. In the conventional method of ultrasonic test in austenitic stainless steel weldments, dendritic solidification structure of weldment prevents smooth ultrasonic beam transmission. The tests are performed in three welding conditions; One is conventional TIG welding (without magnetic stirring), the other two are TIG welding using magnetic stirring method. Each test piece is evaluated by observing macro structure of cross section and by several ultrasonic tests examining pulse amplitudes, beam path length and proceeding beam direction. The detectability of artificial notches in weldment is also investigated and compared.
- OSTI ID:
- 86146
- Report Number(s):
- CONF-9505104--; ISBN 0-87170-548-6
- Country of Publication:
- United States
- Language:
- English
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