Journal of the Korean Society for Heat Treatment (열처리공학회지)

The Korean Society for Heat Treatment (한국열처리공학회)
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Static Creep Characteristics of AI-10wt% TiCp Composites

Al-10wt% TiCp복합재료의 정적 크립특성

  • Rhim, J.K. (Dept. of Meterials Engineering, Chung Buk National Univ.) ;
  • Park, J.K. (Dept. of Engineering Materials, Dae Lim Engineering College)
  • 임종국 (충북대학교 대학원 재료공학과) ;
  • 박종건 (대림공업전문대학 공업재료과)
  • Published : 1993.09.30
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Abstract

Creep tests of the TiC particulate reinforced Al composite have been conducted in the temperature ranges from 200 to $500^{\circ}C$. The steady-state cree rate of the composite depended strongly on the temperature and ap' plied stress. The stress exponent for the steady state creep rate of the composites was approximately 17.5 and the activation anergy was calculated to be 390KJ/mol. The steady-state creep equation could be written as $\acute{\varepsilon}_{ss}$ $$(s^{-1})=1.5{\times}10^{-9}\;{\sigma}^{17.5}\exp(-390000/RT)$$. Fracture surface examination showed that the fracture mode of the particulate reinforced composite was ductile by plastic tearing of the aluminum matrix and TiC particle interfaces were offered as sites for crack.

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