Korean Journal of Materials Research (한국재료학회지)

Materials Research Society of Korea (한국재료학회)
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Effects of Drawing Parameters on Mechanical Properties of BAS121 Alloy Tubes for Heat-exchangers by High Frequency Induction Welding

고주파유도용접된 열교환기용 BAS121합금튜브의 기계적 특성에 미치는 인발조건의 영향

  • Han Sang-Woo (Material Science and Metallurgical Engineering, Sunchon National University) ;
  • Kim Byung-Il (Material Science and Metallurgical Engineering, Sunchon National University) ;
  • Lee Hyun-Woo (School of Advanced Materials Engineering, Chonbuk National University) ;
  • Chon Woo-Young (Dept. of Dental Technology, Kwangyang Health College) ;
  • Gook Jin-Seon (Dept. of Advanced Materials Engineering, Hanlyo University)
  • 한상우 (순천대학교 신소재응용학부) ;
  • 김병일 (순천대학교 신소재응용학부) ;
  • 이현우 (전북대학교 신소재공학부) ;
  • 전우용 (광양보건대학 치기공과) ;
  • 국진선 (한려대학교 신소재공학과)
  • Published : 2004.12.01
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Abstract

The aim of this study is to investigate the optimum drawing parameter for BAS121 welded tubes. The BAS121 aluminium alloy tubes with 25 mm in external diameter and 1.3 mm in thickness for heat-exchangers were manufactured by high frequency induction welding with the V shaped convergence angle $6.5^{\circ}$ and power input 55 kW. With increasing the reduction of area ($13,\;21\%$) by drawing, tensile strength was increased and elongation was decreased. With increasing the reduction of area by drawing, hardness in weld metal increased rapidly, while that of base metal increased slowly. In the specimen with the outer diameter smaller than 22 mm, hardness of weld metal was higher than that of base metal. The optimum drawing parameter of area reduction in BAS121 alloys was estimated about $13\%$ because of the work hardening of welds.

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References

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  1. Microstructrue and Mechanical Properties of A3003 Aluminium Alloy Welds by Heat-treatment vol.25, pp.5, 2007, https://doi.org/10.5781/KWJS.2007.25.5.051