Hot deformation and processing map of GH3535 superalloy
| Autor: | Ya-qi Ji, Shun-de Qu, Wei-xin Han |
|---|---|
| Rok vydání: | 2015 |
| Předmět: |
Materials science
Metallurgy Metals and Alloys Activation energy Strain rate Atmospheric temperature range Geotechnical Engineering and Engineering Geology Condensed Matter Physics Carbide Superalloy Materials Chemistry Dynamic recrystallization Compression (geology) Composite material Deformation (engineering) |
| Zdroj: | Transactions of Nonferrous Metals Society of China. 25:88-94 |
| ISSN: | 1003-6326 |
| DOI: | 10.1016/s1003-6326(15)63582-8 |
| Popis: | The hot deformation behavior of GH3535 superalloy was investigated by hot compression tests in the temperature range of 1000–1200 °C and strain rate range of 0.01–50 s−1. The activation energy is about 356.3 kJ/mol, and the flow curves and processing map were developed on the basis of experimental data. The processing map exhibits a stable domain which occurs in the strain rate range of 0.01–1 s−1 at all the temperatures and a instable domain which occurs in the strain rate range of 1–50 s−1. Microstructural observations reveal that the full dynamic recrystallization (DRX) occurs in the conditions of (1150 °C, 0.01 s−1), (1200 °C, 0.01 s−1) and (1200 °C, 0.1 s−1) with different grain sizes and undissolved carbides. The flow localization and cracks occur in the regime of flow instability. |
| Databáze: | OpenAIRE |
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