• Title/Summary/Keyword: A3003 Aluminium Alloy

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Effects of Heat-treatment Parameters on Mechanical Properties of A3003 Al Alloy Tubes for Heat-exchangers by High Frequency Induction Welding (고주파유도 용접된 A3003 알루미늄합금 튜브의 기계적 특성에 미치는 열처리조건의 영향)

  • Gook, Jin-Seon;Yoon, Dong-Ju;Kim, Byung-Il
    • Journal of the Korean Society for Heat Treatment
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    • v.19 no.3
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    • pp.156-162
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    • 2006
  • The aim of this study is to investigate the full annealing parameter for A3003 Al alloy welded tubes. The A3003 Al alloy tubes with 34 mm in external diameter and 1.3 mm in thickness for OPC drum were manufactured by high frequency induction welding with the V shaped convergence angle $6.7^{\circ}$ and power input 50 kW. The tensile and yield strength decreased with increasing the annealing temperature and time remarkably, but elongation increased remarkably. Vickers hardness in welds and base metal decreased with increasing the annealing temperature and time remarkably. In a certain experimental condition, the welds line in A3003 alloys disappeared at $520^{\circ}C$ for 4hr because of the same mechanical properties and structures between welds and base metal.

Microstructrue and Mechanical Properties of A3003 Aluminium Alloy Welds by Heat-treatment (열처리된 A3003 알루미늄합금 용접부의 미세조직 및 기계적 특성)

  • Lee, Il-Cheon;Song, Yeong-Jong;Gook, Jin-Seon;Yoon, Dong-Joo;Kim, Byung-Il
    • Journal of Welding and Joining
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    • v.25 no.5
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    • pp.51-57
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    • 2007
  • The present work was aimed to examine the variation of microstructure and mechanical properties by annealing($100{\sim}620^{\circ}C$, $2{\sim}8hr$) in A3003 Al alloy welded pipes. The A3003 Al alloy pipes with 34 mm in external diameter and 1.3 mm in thickness were manufactured by high frequency induction welding with the V shaped convergence angle $6.7^{\circ}$ and power input 50 kW. The tensile and yield strength decreased with increasing the annealing temperature remarkably, but elongation increased remarkably. Vickers hardness in welds decreased with increasing the annealing temperature remarkably. The primary intermetallic compound of $Al_{12}(Fe,\;Mn)_2Si$ was precipitated in welds as the same base metal. In a certain experimental condition, the welds line in A3003 alloys disappeared at $450^{\circ}C$ for 2 hr because of the same mechanical property and structure between welds and base metal.

A Study on the Welding Behavior of A3003 Aluminium Alloy Thin Sheet by Nd : YAG Laser Beam (박판 A3003 Al합금의 Nd : YAG 레이저빔 용접에 관한 연구)

  • 허인석;김병철;김도훈;김진수;이한용
    • Laser Solutions
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    • v.4 no.1
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    • pp.29-38
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    • 2001
  • This work was carried out to investigate the welding behavior of thin A3003 Al alloy sheets by Nd : YAG laser beam. Considering bead shape and mechanical properties, the laser pulse shapes selected were two kinds of 2-division and 3-division by varying power level and pulse duration. In order to obtain optimum conditions, the factorial design method and central composite design method were applied. Tensile test, optical microscopy, micro hardness test and TEM analysis were performed. Due to the annealing caused by thermal effect during laser welding, precipitates were coarsended. The HAZ was softened and failed during tensile test. The hardness of HAZ was lower than that of base metal, since the heat input relieved the work hardening effect and caused grain growth.

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