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首页> 外文期刊>Journal of Materials Engineering and Performance >Laser Brazing Characteristics of Al to Brass with Zn-Based Filler
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Laser Brazing Characteristics of Al to Brass with Zn-Based Filler

机译：用Zn基填料激光钎焊的特性Al至黄铜

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摘要

Laser brazing of Al to brass in lap configuration with Zn-based filler was performed in this work. The process parameters including laser power, defocused distance were found to have a significant influence on appearance, microstructure and mechanical properties. The process parameters were optimized to be laser power of 2700 W and defocusing distance of + 40 mm from brass surface. In addition, preheating exerted great influence on wetting and spreading ability of Zn filler on brass surface. The microstructure observation showed the thickness of reaction layer (CuZn phase) at the interface of the brass side would grow with the increase in laser power and the decrease in the laser defocusing distance. Moreover, preheating could increase the spreading area of the filler metal and induced the growth of the reaction layer. The highest tensile-shear load of the joint could reach 2100 N, which was 80% of that of Al alloy base metal. All the joints fractured along the CuZn reaction layer and brass interface. The fracture morphology displayed the characteristics of the cleavage fracture when without preheating before welding, while it displayed the characteristics of the quasi-cleavage fracture with preheating before welding.
机译：在这项工作中进行了用Zn的填料的LAP构型激光钎焊在leap构型中，在这项工作中进行。发现包括激光功率，离焦距离的过程参数对外观，微观结构和机械性能产生显着影响。处理参数优化为2700W的激光功率，距离黄铜表面+ 40mm的散焦距离。此外，预热对Zn填料对黄铜表面的润湿和散布能力产生了很大的影响。微观结构观察显示黄铜侧界面处的反应层（Cuzn相）的厚度将随着激光功率的增加和激光散焦距离的降低而生长。此外，预热可以增加填充金属的扩散区域并诱导反应层的生长。接头的最高拉伸剪切载荷可以达到2100n，其为Al合金基础金属的80％。所有关节沿Cuzn反应层和黄铜界面断裂。在焊接前没有预热时，骨折形态显示出裂解断裂的特性，同时展示了焊接前预热的准切割骨折的特性。

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  • 作者

    Tan Caiwang; Liu Fuyun; Sun Yiming; Chen Bo; Song Xiaoguo; Li Liqun; Zhao Hongyun; Feng Jicai;

  • 作者单位

    Harbin Inst Technol State Key Lab Adv Welding &

    Joining Harbin 150001 Heilongjiang Peoples R China;

    Harbin Inst Technol Weihai Shandong Prov Key Lab Special Welding Technol Weihai 264209 Peoples R China;

    Harbin Inst Technol Weihai Shandong Prov Key Lab Special Welding Technol Weihai 264209 Peoples R China;

    Harbin Inst Technol Weihai Shandong Prov Key Lab Special Welding Technol Weihai 264209 Peoples R China;

    Harbin Inst Technol State Key Lab Adv Welding &

    Joining Harbin 150001 Heilongjiang Peoples R China;

    Harbin Inst Technol State Key Lab Adv Welding &

    Joining Harbin 150001 Heilongjiang Peoples R China;

    Harbin Inst Technol Weihai Shandong Prov Key Lab Special Welding Technol Weihai 264209 Peoples R China;

    Harbin Inst Technol State Key Lab Adv Welding &

    Joining Harbin 150001 Heilongjiang Peoples R China;

  • 收录信息
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 金属学与金属工艺;工程材料学;
  • 关键词

    dissimilar joint; interface; laser brazing; microstructure; preheating;

    机译：不同的关节;界面;激光钎焊;微观结构;预热;

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