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首页> 外文期刊>Materials Science and Engineering >Transient liquid phase bonding of carbon steel components using Ni-based foils - A comprehensive joint characterization
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Transient liquid phase bonding of carbon steel components using Ni-based foils - A comprehensive joint characterization

机译：碳钢组分使用Ni基箔的瞬态液相键合 - 综合关节表征

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摘要

The transient liquid phase bonding (TLPB) process is one of the selected joining technologies to replace threaded connections in solid expandable tubulars. In particular, for expandable hot-rolled seamless carbon steel tubular products using Ni-based amorphous metallic foils as filler material.In this work, a comprehensive mechanical properties and microstructural characterization was carried out in TLP-bonded bars for this base metal/filler material combination. Both the joint and the heat affected zone exhibited a strength which compares well with the base metal, and a ductility in accordance with that which is typically specified for steel arc-welded joints. A coalesced lath-like bainitic microstructure was found at the joint. In addition, and by means of orientation imaging, a parent austenite grain-which is shared by the joint and an adjacent ferrite grain from the base metal-was found, which demonstrates the epitaxial nature of the TLPB solidification process.Also, a cell-block-like structure at ferrite grains next to the joint was detected, due to the plastic deformation developed in tensile-tested samples at room temperature.
机译：瞬态液相键合（TLPB）工艺是所选择的连接技术之一，以更换固体可膨胀管中的螺纹连接。特别地，对于使用Ni的无定形金属箔作为填充材料的可扩展热轧无缝碳钢管产品。在此工作中，在TLP键合的棒中进行综合机械性能和微观结构表征，用于该贱金属/填料材料组合。接头和热影响区域都表现出与基础金属良好的强度，以及根据通常为钢弧焊接头指定的延展性。在关节中发现了聚结的腰部壳体微观结构。另外，通过取向成像，发现由关节和来自基础金属的相邻铁氧体颗粒共用的母体奥氏体晶粒 - 显示了TLPB凝固过程的外延性质。由于在室温下的拉伸试验样品中的塑性变形，检测到接头旁边的铁氧体颗粒的块状结构。

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