Combined finite element and phase field method for simulation of austenite grain growth in the heat-affected zone of a martensitic steel weld
| Autor: | Lei Shi, Spyridon A. Alexandratos, Noel P. O’Dowd |
|---|---|
| Přispěvatelé: | SFI, ICHEC |
| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: |
Heat-affected zone
Materials science austenite grain growth Field (physics) Mechanical Engineering heat-affected zone 02 engineering and technology Welding welding thermal process 021001 nanoscience & nanotechnology Finite element method Phase field method 020501 mining & metallurgy law.invention 0205 materials engineering law Phase (matter) Martensite finite-element method General Materials Science Composite material 0210 nano-technology Austenite grain |
| Popis: | Engineering components operating at high temperature often fail due to the initiation and growth of cracks in the heat-affected zone adjacent to a weld. Understanding the effects of microstructural evolution in the heat-affected zone is important in order to predict and control the final properties of welded joints. This study presents a combined finite element method and phase field method for simulation of austenite grain growth in the heat-affected zone of a tempered martensite (P91) steel weld. The finite element method is used to determine the thermal history of the heat-affected zone during gas tungsten arc welding of a P91 steel plate. Then, the calculated thermal history is included in a phase field model to simulate grain growth at various positions in the heat-affected zone. The predicted mean grain size and grain distribution match well with experimental data for simulated welds from the literature. The work lays the foundation for optimising the process parameters in welding of P91 and other ferritic/martensitic steels in order to control the final heat-affected zone microstructure. |
| Databáze: | OpenAIRE |
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