Hot-cracking resistivity of dissimilar clads using Inconel 52 and 308L stainless steel on carbon steel
- Authors
- Kim, Yookyung; Nam, Hyunbin; Lee, Junghun; Park, Chulho; Moon, Byungrok; Nam, Dae-Geun; Lee, Seung Hwan; Kang, Namhyun
- Issue Date
- Mar-2020
- Publisher
- ELSEVIER
- Keywords
- Hot-cracking resistivity; Inconel 52; Stainless steel 308L; Laves phase; Transition zone; Delta-ferrite
- Citation
- JOURNAL OF NUCLEAR MATERIALS, v.533, pp.1 - 6
- Indexed
- SCIE
SCOPUS
- Journal Title
- JOURNAL OF NUCLEAR MATERIALS
- Volume
- 533
- Start Page
- 1
- End Page
- 6
- URI
- https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/2845
- DOI
- 10.1016/j.jnucmat.2020.152103
- ISSN
- 0022-3115
- Abstract
- This study investigates the effect of a built-up sequence on the hot-cracking resistivity of dissimilar clads. Dissimilar clads of Inconel 52 and austenitic stainless steel (STS) 308L were produced using submerged arc-welding of the carbon steel. Hot-cracking occurred near the fusion boundary when the STS 308L was cladded to the buffer layer of Inconel 52 (STS 308L/Inconel 52 clad). Causative factors were identified as: (i) the wide transition zone in the interface between the dissimilar clads, and (ii) the eutectic-type Laves phase having a high level of S and P contents and a continuous geometry of thin films formed along the grain boundary. Hot cracks did not appear when Inconel 52 was cladded to the buffer layer of 308L stainless steel (Inconel 52/STS 308L clad). Hot-cracking resistivity was significantly improved by forming δ-ferrite in the interfacial boundary for the Inconel 52/STS 308 L clad.
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