Journal of Korea Foundry Society (한국주조공학회지)

Korea Foundry Society (한국주조공학회)
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The Effect of Sn on the Glass Formation Ability of the Zr-based Amorphous Alloy

Zr-based 비정질 합금의 비정질 특성에 미치는 Sn의 영향

  • Lee, Byung-Chul (Performance Material Korea Co. Ltd.) ;
  • Park, Heong-Il (Department of Materials System Engineering, Pukyung National University) ;
  • Park, Bong-Gyu (Department of Materials System Engineering, Pukyung National University) ;
  • Kim, Sung-Gyoo (Department of Materials System Engineering, Pukyung National University)
  • 이병철 ((주)퍼포먼스머티리얼코리아) ;
  • 박흥일 (부경대학교 신소재시스템공학과) ;
  • 박봉규 (부경대학교 신소재시스템공학과) ;
  • 김성규 (부경대학교 신소재시스템공학과)
  • Received : 2014.01.07
  • Accepted : 2014.04.24
  • Published : 2014.04.30
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Abstract

In commercial Zr-Nb-Cu-Ni-Al amorphous alloys, expensive element, Zr, was substituted to Sn which was cheaper one, and then, glass forming ability, compressive strength and hardness of them were estimated. Even though the Sn was added up to 1.5%, resulting phase was not changed to the crystalline form. It was confirmed by X-ray diffraction and thermal analyses. In the X-ray profiles, there were no peaks for crystalline phases and typical halo pattern for amorphous phase was appeared at the diffraction angle of $35^{\circ}{\sim}45^{\circ}$. Thermal analyses also showed that the Sn modified alloys were corresponded to the amorphous standards where ${\delta}T$(= Tx - Tg) and Trg(= Tg/Tm) affecting to the amorphous forming ability were more than 50K and 0.60 respectively. Compressive strengths were 1.77 GPa, 1.63 GPa, 1.65 GPa and 1.77 GPa for 0%Sn, 0.5%Sn, 1.0%Sn and 1.5%Sn respectively. Hardnesses of the Sn modified alloys were decreased from 752 Hv to 702 Hv in 1.0%Sn and recovered to 746 Hv in 1.5%Sn.

Keywords

References

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