Investigation of prior austenite grain and delta ferrite in CLAM welded joints after different diffusion annealing processes
| Autor: | Jian Wang, Ying Zou, Dan Wang, Xiaofeng Lu, Camila Caroline de Castro |
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| Rok vydání: | 2020 |
| Předmět: |
Structural material
Materials science Annealing (metallurgy) Mechanical Engineering Metallurgy Welding Blanket Fusion power Microstructure 01 natural sciences Grain size 010305 fluids & plasmas law.invention Nuclear Energy and Engineering law 0103 physical sciences General Materials Science 010306 general physics Austenite grain ddc:620.11 Civil and Structural Engineering |
| Zdroj: | Wang, J.; Castro, C.; Zou, Y.; Wang, D.; Lu, X.: Investigation of prior austenite grain and delta ferrite in CLAM welded joints after different diffusion annealing processes. In: Fusion Engineering and Design. Vol. 159 (2020) 111815. (DOI: /10.1016/j.fusengdes.2020.111815) |
| ISSN: | 0920-3796 |
| DOI: | 10.1016/j.fusengdes.2020.111815 |
| Popis: | CLAM steel is one of the structural material used in test blanket modules as a barrier or blanket for fusion reactors. Different diffusion annealing processes were employed in order to investigate the effect of δ-ferrite elimination and prior austenite grain coarsening. The results show that both alloying elements diffusion and microstructures coarsening during the diffusion annealing treatment influence the contents and morphologies of δ-ferrite. The polygonal blocky δ-ferrite and the coarse grains were determined as the main factors deteriorating the impact toughness for the CLAM welded joint. A CLAM welded joint with good impact toughness and appropriate microstructure in terms of grain size and δ-ferrite content was obtained after diffusion annealing process at 1100 °C for 10 h. |
| Databáze: | OpenAIRE |
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