Scholarlink

<p>This study investigates the influence of brazing current on the mechanical integrity and corrosion behavior of galvanized steel joints produced via gas metal arc brazing (GMAB). Brazing was performed in a lap joint configuration using currents ranging from 70 A to 95 A. As the brazing current increased, the associated heat input also rose, enhancing filler metal penetration but inducing uneven flow and potential defects such as incomplete fill, particularly at the lower edge of the joint. EDS was employed to quantify zinc evaporation in the HAZ, revealing a significant reduction in residual zinc content at higher current levels. This loss of protective zinc coating directly impacted corrosion resistance. Corrosion resistance was notably reduced in all HAZ regions as brazing current increased. The results suggest that while higher currents improve joint penetration, they simultaneously degrade corrosion protection due to zinc depletion and microstructural discontinuities.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Influence of brazing currents on mechanical and corrosion properties of galvanized steel in gas metal arc brazing

  • 期刊论文

  • 发表日期：

    2025年12月26日

查看全文
  • Bhuwadol Thanathattakum,
  • Sakdipat Jaturapronperm,
  • Pongpak Chiyasak,
  • Worawat Wattanathana,
  • Trinet Yingsamphancharoen,
  • Aphichart Rodchanarowan

摘要

This study investigates the influence of brazing current on the mechanical integrity and corrosion behavior of galvanized steel joints produced via gas metal arc brazing (GMAB). Brazing was performed in a lap joint configuration using currents ranging from 70 A to 95 A. As the brazing current increased, the associated heat input also rose, enhancing filler metal penetration but inducing uneven flow and potential defects such as incomplete fill, particularly at the lower edge of the joint. EDS was employed to quantify zinc evaporation in the HAZ, revealing a significant reduction in residual zinc content at higher current levels. This loss of protective zinc coating directly impacted corrosion resistance. Corrosion resistance was notably reduced in all HAZ regions as brazing current increased. The results suggest that while higher currents improve joint penetration, they simultaneously degrade corrosion protection due to zinc depletion and microstructural discontinuities.