Proceedings of the Korean Society for Technology of Plasticity Conference (한국소성가공학회:학술대회논문집)

The Korean Society for Technology of Plasticity and materials processing (한국소성∙가공학회)
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Effect of SiC Particle Size on Hot Workability of AA2024/$SiC_P$ Composites

AA2024/$SiC_P$ 복합재료의 열간 가공성에 미치는 강화상 크기의 영향

  • 고병철 (인하대학교 공과대학 금속공학과) ;
  • 홍흥기 (인하대학교 공과대학 금속공학과) ;
  • 유연철 (인하대학교 공과대학 금 속공학과)
  • Published : 1997.03.01
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Abstract

The hot deformation behavior of SiCp/AA2024 composites reinforced with different sizes of SiCp reinforcements (1, 8, 15, 36, and 44${\mu}{\textrm}{m}$) was investigated by hot torsion tests. The hot restoration of the composites depending on the SiCp reinforcements particle size was studied from the effective stress - strain curves. Dynamic recrystallization (DRX) was occurred in the SiCp/AA2024 composites during the hot deformation at 320 - 43$0^{\circ}C$ under a strain rate of 1.0/sec. Also, the critical strain for DRX decreased with decreasing the reinforcement size of SiCp from 44 to 8${\mu}{\textrm}{m}$. The composite reinforced with SiCp of 8${\mu}{\textrm}{m}$ showed the highest flow stress (265 MPa) and the work hardening rate at 32$0^{\circ}C$ under a strain rate of 1.0/sec.

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