Hot Deformation Behavior and Processing Map of 25%SiCp/2009A1 Composite
| Autor: | Jun Hui Nie, Shao Hua Wei, Yan Qiang Liu, Zi Li Ma, Tao Zuo, Jian Zhong Fan |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
010302 applied physics
Materials science Mechanical Engineering Composite number Compaction 02 engineering and technology Strain rate Flow stress Atmospheric temperature range 021001 nanoscience & nanotechnology Condensed Matter Physics 01 natural sciences Mechanics of Materials Powder metallurgy 0103 physical sciences Dynamic recrystallization General Materials Science Composite material Deformation (engineering) 0210 nano-technology |
| Zdroj: | Materials Science Forum. 849:409-415 |
| ISSN: | 1662-9752 |
| Popis: | The hot deformation characteristics of 25%SiCp/2009A1 composite fabricated by powder metallurgy route were studied by thermal compaction testing on Gleeble-3800 hot-simulation machine in the temperature range of 370~520 °C and strain rate range of 0.01~10 s-1. The processing maps of 25%SiCp/2009A1 composites were developed on the basis of dynamic material model. The results show that the flow stress decreased with increasing deformation temperature at a constant strain rate, and increased with increasing strain rate at a constant temperature. The processing maps present unsteady zones at high strain rate (≥1 s-1). There are a few interfaces of particle-matrix separated and the particle itself cracked. There was significant dynamic recovery and dynamic recrystallization occurred in the higher temperature and lower strain rate region. The optimum hot deformation condition of the composites attained by the maps were in the temperature range of 450~490 °Cand in the strain rate range of 0.01~0.1 s-1. |
| Databáze: | OpenAIRE |
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