Transactions of Materials Processing (소성∙가공)

The Korean Society for Technology of Plasticity and materials processing (한국소성∙가공학회)
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Fabrication and Mechanical Properties of TiNi/Al2024 Composites by Hot-Press Method

고온 프레스법에 의한 TiNi/Al2024 복합재료의 제조 및 기계적 특성평가

  • 손용규 ((주)현진소재 품질관리부) ;
  • 배동수 (동의대 신소재공학과) ;
  • 박영철 (동아대학교 기계공학과) ;
  • 이규창 (포항산업과학연구원 부품신소재연구본부)
  • Published : 2009.02.01
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Abstract

Shape memory alloy has been used to improve the tensile strength of composite by the occurrence of compressive residual stress in matrix using its shape memory effect. In order to fabricate shape memory alloy composite, TiNi alloy fiber and Al2024 sheets were used as reinforcing material and matrix, respectively. In this study, TiNi/Al2024 shape memory alloy composite was made by using hot press method. In order to investigate bonding condition between TiNi reinforcement and Al matrix, the micro-structure of interface was observed by using optical microscope and diffusion layer of interface was measured by using Electron Probe Micro Analyser. And the mechanical properties of composite with three parameters(volume fraction of fiber, cold rolling amount and test temperature) were obtained by tensile test. The most optimum bonding condition for fabrication the TiNi/Al2024 composite material was obtained as holding for 30min. under the pressure of 60MPa at 793K. The strength of composite material increased considerably with the volume fraction of fiber up to 7.0%. And the tensile strength of this composite increased with the reduction ratio and it also depends on the volume fraction of fiber.

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References

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