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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Crystallization behavior of Cu-base bulk metallic glass in supercooled liquid region during compression and tension

과냉각 액상구간에서 압축.인장시 Cu기 비정질 합금의 결정화 거동

  • 박은수 (고려대학교, 신소재 공학부) ;
  • 김상현 (고려대학교, 신소재 공학부) ;
  • 허무영 (고려대학교, 신소재 공학부) ;
  • 김휘준 (한국생산기술연구원, 신기능소재팀) ;
  • 배정찬 (한국생산기술연구원, 신기능소재팀)
  • Published : 2008.10.09
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Abstract

Crystallization behavior of the bulk metallic glass (BMG) during compression and tension was studied in the supercooled liquid region (SLR). Rod samples of the BMG alloy were produced by consolidating gas atomized powders of $Cu_{54}Zr_{22}Ti_{18}Ni_6$ using spark plasma sintering. The crystallization behavior in these samples was examined by tackling changes in thermal property during heating the samples in DSC. The present BMG alloy was firstly decomposed and then crystallized during annealing in the SLR. The phase decomposition from the original amorphous phase was retarded by the compressive stress, while it was accelerated by the tensile stress.

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