한국표면공학회지 (Journal of the Korean institute of surface engineering)

  • 제42권5호
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  • Pages.246-249
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  • 2009
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  • 1225-8024(pISSN)
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  • 2288-8403(eISSN)
한국표면공학회 (The Korean Institute of Surface Engineering)
권호 표지
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Effects of Alloying Element and Heat Treatment on Properties of Cu-Ti Alloys

  • Suk, Han-Gil (Department of Materials and Metallurgical Eng., Kangwon National University) ;
  • Hong, Hyun-Seon (Plant Engineering Center, Institute for Advanced Engineering (IAE))
  • 발행 : 2009.10.31
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초록

Cu-Ti alloys with titanium in the range of 0.5-6.0 wt% were developed to evaluate the effect of the titanium content and heat treatment on microstructure, hardness, and electrical conductivity. The hardness of the Ti-added copper alloys generally increased with the increase in titanium content and hardening was effective up to the 2.5 wt%-Ti addition. Microstructural examination showed that the second phase of $Cu_4Ti$ started to precipitate out from the 3.0 wt% Ti-addition, and the precipitate size and volume fraction increased with further Ti addition. Aging of the present Cu-Ti alloys at $450^{\circ}C$ for 1 h increased the hardness; however, the further aging up to 10 h did not much change the hardness. In the present study, it was inferred that in optimal Ti addition and aging condition Cu-Ti alloy could have the hardness and electrical conductivity values which are comparable to those of commercial Cu-Be alloy.

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