Fatigue crack propagation behavior and acoustic emission characteristics of the heat affected zone of super duplex stainless steel
- 1. Busan Polytechnic College, Busan (Korea, Republic of)
- 2. Pukyong National Univ., Busan (Korea, Republic of)
Description
Because duplex stainless steel shows the good strength and corrosion resistance properties, the necessity of duplex stainless steel, which has long life in severe environments, has been increased with industrial development. The fatigue crack propagation behavior of Heat Affected Zone(HAZ) has been investigated in super duplex stainless steel. The fatigue crack propagation rate of HAZ of super duplex stainless steel was faster than that of base metal of super duplex stainless steel. We also analysed acoustic emission signals during the fatigue test with time-frequency analysis method. According to the results of time-frequency analysis, the frequency ranges of 200-400 kHz were obtained by striation and the frequency range of 500 kHz was obtained due to dimple and separate of inclusion
Additional details
Publishing Information
- Journal Title
- Journal of the Korean Institute of Metals and Materials
- Journal Volume
- 40
- Journal Issue
- 9
- Series
- 13 refs, 13 figs, 4 tabs
- Journal Page Range
- p. 924-931
- ISSN
- 0253-3847
INIS
- Country of Publication
- Korea, Republic of
- Country of Input or Organization
- Korea, Republic of
- INIS RN
- 36053839
- Subject category
- S36: MATERIALS SCIENCE;
- Descriptors DEI
- ACOUSTIC EMISSION TESTING; AUSTENITIC STEELS; CORROSION RESISTANCE; CRACK PROPAGATION; FATIGUE; FERRITIC STEELS; HEAT AFFECTED ZONE; NONDESTRUCTIVE ANALYSIS; STAINLESS STEELS; WELDING
- Descriptors DEC
- ACOUSTIC TESTING; ALLOYS; CARBON ADDITIONS; CHEMICAL ANALYSIS; FABRICATION; HIGH ALLOY STEELS; IRON ALLOYS; IRON BASE ALLOYS; JOINING; MATERIALS TESTING; MECHANICAL PROPERTIES; NONDESTRUCTIVE TESTING; STEELS; TESTING; TRANSITION ELEMENT ALLOYS; ZONES