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Hot deformation behavior of P/M Al6061-20% SiC composite

Asgharzadeh, H | 2007

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  1. Type of Document: Article
  2. DOI: 10.4028/0-87849-419-7.897
  3. Publisher: Trans Tech Publications Ltd , 2007
  4. Abstract:
  5. In the present work, hot workability of particulate-reinforced Al6061-20%SiC composite produced by direct hot extrusion technique was studied. Uniaxial hot compression test at various temperatures and strain rates was used and the workability behavior was evaluated from the flow curves and the attendant microstructures. It was shown that the presence of SiC particles in the soft Al6061 matrix deteriorates the hot workability. Bulging of the specimens and flow lines were observed, which indicates the plastic instability during hot working. Microstructure of the composites after hot deformation was found to be heterogeneous, i.e. the reinforcement clusters were observed at the flow lines. The mechanism of deformation is determined to be controlled primarily by dynamic recrystallization
  6. Keywords:
  7. Aluminum ; Dynamic recrystallization ; Hot pressing ; Hot working ; Metal extrusion ; Microstructure ; Silicon carbide ; Direct hot extrusion ; Hot compression tests ; Particulate reinforcement ; Plastic instability ; Metallic matrix composites
  8. Source: 2006 Powder Metallurgy World Congress and Exhibition, PM 2006, Busan, 24 September 2006 through 28 September 2006 ; Volume 534-536, Issue PART 2 , 2007 , Pages 897-900 ; 02555476 (ISSN); 0878494197 (ISBN); 9780878494194 (ISBN)
  9. URL: https://www.koreascience.or.kr/article/CFKO200617317790652.pdf
  10. URL: https://www.scientific.net/MSF.534-536.897