超狭開先アーク溶接部の硬さ分布特性の数値シミュレーション : 溶接熱サイクルおよび組織分率の数値シミュレーションによる溶接部の硬さ分布特性評価に関する研究(第1報)  [in Japanese] Numerical Simulation of Hardness Distribution in Welds of Ultra-Narrow Gap GMA Welding : Evaluation of Hardness Distribution in Welds by Numerical Simulation of Weld Thermal Cycles and Fraction of Microstructure (Report 1)  [in Japanese]

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Author(s)

Abstract

Hardness distribution in welds of Ultra-Narrow Gap GMA welding has been evaluated with numerical simulation. Estimation of hardness distribution has been performed considering weld thermal cycle and microstructure in welds. In order to investigate temperature profile of welds precisely, detailed measurement has been performed. Welding wire is oscillated vertically in the Ultra-Narrow Gap GMA welding process, however, temperature profile in heat affected zone during cooling has not been affected by the oscillation. Therefore the finite element heat conduction analysis has been possible to perform without considering the effect of oscillation of welding wire. Changes in microstructure have also been calculated based on the continuous cooling transformation diagram of the material. Hardness distribution in welds has been estimated based on the calculated weld thermal cycle and fraction of microstructure with the rule of mixture. Estimated distribution of hardness in welds was in good agreement with measured result. The method is applicable to evaluation of performance of welded joint.

Journal

  • Quarterly journal of the Japan Welding Society.

    Quarterly journal of the Japan Welding Society. 23(4), 558-563, 2005-11-05

    Japan Welding Society

References:  13

Cited by:  1

Codes

  • NII Article ID (NAID)
    110003496132
  • NII NACSIS-CAT ID (NCID)
    AN1005067X
  • Text Lang
    JPN
  • Article Type
    Journal Article
  • ISSN
    02884771
  • NDL Article ID
    7719210
  • NDL Source Classification
    ZP41(科学技術--金属工学・鉱山工学)
  • NDL Call No.
    Z17-939
  • Data Source
    CJP  CJPref  NDL  NII-ELS 
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