Deformation map for hot working of AA2024 composites reinforced with SiC particle

Ko, Byung-Chul; Yoo, Yongjae

doi:10.1007/bf03026304

Cited by 3 publications

(1 citation statement)

References 15 publications

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“…5. The presence of a large number of dislocations near the SiC particles can improve the nucleation rate of the matrix alloy and promote the dynamic recrystallization of the matrix alloy [22][23][24]. Dynamic recrystallization can not only release the dislocations produced during the deformation process improving the thermal performance of the material, but also improve the microstructure and mechanical properties of the materials.…”

Section: Resultsmentioning

confidence: 99%

Hot Deformation Behavior and Processing Map of 25%SiC<sub>p</sub>/2009A1 Composite

Shao¹,

Liu²,

Nie³

et al. 2016

MSF

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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.

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Section: Resultsmentioning

confidence: 99%