Modelling of Strengthening Mechanisms in Wrought Nickel-Based 825 Alloy Subjected to Solution Annealing
نویسندگان
چکیده
Wrought nickel-based Alloy 825 is widely used in the oil and gas industries, attributed to its high strength at temperatures up 540 °C. However, differences mechanical properties arise finished components due variations both grain size dislocation density. Numerous experimental studies of strengthening mechanisms have been reported many models developed predict under thermomechanical processing. there are debates surrounding some fundamental issues modeling interpretation observations. Therefore, it important understand evolution strain within material during hot-forging process. In addition, a lack research around behavior hot deformation subsequent stabilization 825. This article investigates origin this considers variety mechanisms, resulting quantitative prediction contribution each mechanism. The alloy processed with total forging 0.45, 0.65, or 0.9, annealing temperature 950 °C, reflecting commercial practice. microstructure after similar that before annealing, suggesting static recovery dominant temperature. maximum yield ultimate tensile were 348 MPa 618 MPa, respectively, obtained true ductility 40%. majority was refinement, densities large deformation, solid solution strengthening. Precipitate also quantified using Brown Ham modification Orowan bowing model. results calculations excellent agreement data, less than 1% difference. interfacial energy Ti(C,N) face-centered cubic matrix current has assessed for first time, value 0.8 mJm−2. These can be by future researchers industry alloys, especially hot-forging.
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ژورنال
عنوان ژورنال: Metals
سال: 2021
ISSN: ['2075-4701']
DOI: https://doi.org/10.3390/met11050771