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首页> 外文期刊>International Journal of Heat and Mass Transfer >Transport phenomena in conduction mode laser beam welding of Fe-Al dissimilar couple with Ta diffusion barrier
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Transport phenomena in conduction mode laser beam welding of Fe-Al dissimilar couple with Ta diffusion barrier

机译：Fe-Al异种材料与Ta扩散势垒的传导模式激光束焊接中的输运现象

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摘要

Fusion welding of dissimilar metals always encounters immense difficulties due to the formation of brittle intermetallic phases that make the joint unsuitable for structural applications. Using a barrier layer that wets well with either component but does not undergo melting itself and prevents intermixing and undesirable phase formation could be a possible remedy. In order to explore this hypothesis, we have made an attempt to numerically simulate and experimentally validate the heat and mass transport phenomena in the fusion zone concerning laser assisted welding of Fe-Al dissimilar couples with 0.2 mm Ta foil as the diffusion barrier butted between Fe and Al. The results suggest that the Fe-side undergoes greater degree of melting resulting in an asymmetric thermal and velocity fields. Furthermore, partial melting of Ta seems unavoidable but proves benign as this leads to good bonding between Fe-Ta and Ta-Al while precluding formation of Fe-Al alloy/intermetallic phases.
机译：异种金属的熔焊始终会遇到巨大的困难，这是由于形成脆性的金属间相导致接头不适合结构应用。可以使用一种阻挡层，该阻挡层可以很好地润湿任何一种组分，但自身不会熔化，并且可以防止相互混合和不良相的形成。为了探索这一假设，我们尝试进行数值模拟和实验验证融合区中的热和质量传输现象，该融合区涉及以0.2 mm Ta箔作为扩散对接在Fe之间的Fe-Al异种对的激光辅助焊接。和铝。结果表明，Fe侧的熔化程度更高，从而导致不对称的热场和速度场。此外，Ta的部分熔化似乎是不可避免的，但被证明是良性的，因为这会导致Fe-Ta和Ta-Al之间的良好结合，同时又阻止了Fe-Al合金/金属间相的形成。

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  • 来源
    《International Journal of Heat and Mass Transfer》 |2010年第24期|p.5274-5282|共9页
  • 作者

    S. Mukherjee; S. Chakraborty; R. Galun; Y. Estrin; I. Manna;

  • 作者单位

    Department of Metallurgical and Materials Engineering, Indian Institute of Technology Kharagpur, Kharagpur 721 302, West Bengal, India;

    rnDepartment of Mechanical Engineering, Indian Institute of Technology Kharagpur, Kharagpur 721 302, West Bengal, India;

    rnI.W.W., Agricolastr. 6, Tech. Univ. of Clausthal, D-38678 Clausthal-Zellerfeld, Germany;

    rnARC Centre of Excellence for Design in Light Metals, Department of Materials Engineering, Monash University and CSIRO Division of Process Science and Engineering Clayton, Victoria, Australia;

    rnDepartment of Metallurgical and Materials Engineering, Indian Institute of Technology Kharagpur, Kharagpur 721 302, West Bengal, India;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    laser; welding; Fe; Al; modeling;

    机译：激光;焊接;铁铝造型;

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