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- Kim, Ji Hyun
- UNIST Nuclear Innovative Materials Lab.
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NANO-STRUCTURAL AND NANO-CHEMICAL ANALYSIS OF NI-BASE ALLOY/LOW ALLOY STEEL DISSIMILAR METAL WELD INTERFACES
- Author(s)
- Choi, Kyoung Joon, Shin, Sang Hun, Kim, Jung Jin, Jung, Ju Ang, Kim, Ji Hyun
- Issued Date
- 2012-06
- Citation
- NUCLEAR ENGINEERING AND TECHNOLOGY, v.44, no.5, pp.491 - 500
- Abstract
- The dissimilar metal joints welded between Ni-based alloy, Alloy 690 and low alloy steel, A533 Gr. B with Alloy 152 filler metal were characterized by using optical microscope, scanning electron microscope, transmission electron microscope, secondary ion mass spectrometry and 3-dimensional atom probe tomography. It was found that in the weld root region, the weld was divided into several regions including unmixed zone in Ni-base alloy, fusion boundary, and heat-affected zone in the low alloy steel. The result of nanostructural and nanochemical analyses in this study showed the non-homogeneous distribution of elements with higher Fe but lower Mn, Ni and Cr in A533 Gr. B compared with Alloy 152, and the precipitation of carbides near the fusion boundary.
- Publisher
- KOREAN NUCLEAR SOC
- ISSN
- 1738-5733
- Keyword (Author)
- Dissimilar Metal Weld, Scanning Electron Microscope, Secondary Ion Mass Spectrometry, Transmission Electron Microscope, 3-Dimensional Atom Probe Tomography, A533 Gr. B, Alloy 152, Stress Corrosion Cracking
- Keyword
- MECHANICAL PROPERTY, STAINLESS-STEEL, JOINT, BEHAVIOR, CRACKING, REGION
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