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首页> 外文期刊>Journal oflaser Applications >CO_2 laser beam welding of AM60 magnesium-based alloy
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CO_2 laser beam welding of AM60 magnesium-based alloy

机译：AM60镁基合金的CO_2激光束焊接

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摘要

Magnesium alloys have a 33% lower density than aluminum alloys, whereas they exhibit the same mechanical characteristics. Their application increases in many economic sectors, in particular, in aeronautic and automotive industries. Nevertheless, their assembly with welding techniques still remains to be developed. In this paper, we present a CO_2 laser welding investigation of AM60 magnesium-based alloy. Welding parameters range is determinate for the joining of 3 mm thickness sheets. The effects of process parameters including beam power, welding speed, focusing position, and shielding gas flow are studied. Experimental results show that the main parameters that determine the weld quality are the laser beam power, the welding speed, and the shielding gas flow. The focal point position has a minor effect on weld quality, however, it has an influence on melting zone width. For optimized welding parameters, metallurgical observations show that after laser welding of AM60 alloy dendritic microstructure is observed on melting zone after high solidification rate. A small heat affected zone is also detected. Finally, hardness tests indicate that microhardness of the weld is higher than that of base metal.
机译：镁合金的密度比铝合金低33％，但是它们具有相同的机械特性。它们在许多经济领域的应用不断增加，特别是在航空和汽车行业。然而，它们与焊接技术的组装仍有待开发。在本文中，我们介绍了AM60镁基合金的CO_2激光焊接研究。焊接参数范围由3毫米厚的板材确定。研究了工艺参数对光束功率，焊接速度，聚焦位置和保护气体流量的影响。实验结果表明，决定焊接质量的主要参数是激光束功率，焊接速度和保护气体流量。焦点位置对焊接质量影响不大，但对熔化区宽度有影响。对于优化的焊接参数，冶金观察表明，AM60合金激光焊接后，在高凝固速率后，在熔化区观察到树枝状组织。还检测到一个小的热影响区。最后，硬度测试表明，焊缝的显微硬度高于母材的显微硬度。

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  • 来源
    《Journal oflaser Applications》 |2010年第2期|P.56-61|共6页
  • 作者

    Asma Belhadj; rnJean-Eric Masse; rnLaurent Barrallier; rnMahmoud Bouhafs; rnJamel Bessrour;

  • 作者单位

    MecaSurf Laboratory, Arts et metiers ParisTech, 13617 Aix en Provence, France and Mecanique Appliquee, Ingenierie et Industrialisation (MA2I), Ecole Nationale d'Ingenieurs de Tunis, 1002 Tunis, Tunisia;

    rnMecaSurf Laboratory, Arts et metiers ParisTech, 13617 Aix en Provence, France;

    rnMecaSurf Laboratory, Arts et metiers ParisTech, 13617 Aix en Provence, France;

    rnMecanique Appliquee, Ingenierie et Industrialisation (MA2I), Ecole Nationale d'Ingenieurs de Tunis, 1002 Tunis, Tunisia;

    rnMecanique Appliquee, Ingenierie et Industrialisation (MA2I), Ecole Nationale d'Ingenieurs de Tunis, 1002 Tunis, Tunisia;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    magnesium alloys; laser welding; welding parameters; microstructure; hardness;

    机译：镁合金激光焊接焊接参数微观结构硬度;

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