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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Deformation behavior in Cu-based bulk amorphous alloys composite during compression

동기지 동계 Bulk Amorphous 복합재의 압축 변형거동

  • 이창호 (고려대학교 공과대학원 신소재공학과) ;
  • 김지수 (고려대학교 공과대학원 신소재공학과) ;
  • 박은수 (고려대학교 공과대학원 신소재공학과) ;
  • 허무영 (고려대학교 공과대학 재료공학부)
  • Published : 2004.10.01
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Abstract

Copper-based bulk amorphous alloy composite was synthesized by using the copper-coated $Cu_{54}Ni_{6}Zr_{22}Ti_{18}$ amorphous powder which was obtained by argon gas atomization. The amorphous powder having a super-cooled liquid region of 53 K was coated by crystalline copper by electroless coating. The consolidation was carried out by manufacturing performs and by the subsequent warm extrusion at 743 K. During the compression test at the room temperature, the composite containing a large fraction of crystalline copper displayed a larger plastic strain after yielding. FEM simulation revealed change in fracture modes in the composites depending on the amount of crystalline copper in the composites.

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