Abstract

Cemented carbides have been widely applied in cutting tools and wear-resistant components due to their ultrahigh hardness and good wear resistance. However, the disadvantages of limited impact toughness and high cost have restricted their further application. Consequently, cemented carbides are usually joining with ductile steels to combine the advantages of both. Among various materials joining technologies, brazing have been an effective method to achieve high quality dissimilar cemented carbide joints. In this paper, the research status of cemented carbide brazing is reviewed. The materials utilized as brazing filler metal in cemented carbide brazing joints are summarized in detail. Researchers have done lots of works utilizing Cu based and Ag based brazing filler metals which are the most commonly used interlayers in brazed joints of cemented carbide and ductile steel. The effects of different filler metal on wettability, microstructure, phase constitution and mechanical properties of brazed cemented carbides joints are analysed. Besides, a series of newly developed brazing filler material such as nickel-based high temperature brazing filler metal, amorphous brazing filler metal and high entropy alloy brazing filler materials are also involved. These newly developed brazing filler metals have shown great potential in fabricating high quality joints. Finally, the current issues of cemented carbide brazing are reviewed and the develop trend is predicted.

Graphic Abstract

中文翻译：

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硬质合金钎料研究现状综述：填充材料与力学性能

摘要

硬质合金具有超高的硬度和良好的耐磨性，因此已广泛用于切削工具和耐磨部件。然而，有限的冲击韧性和高成本的缺点限制了它们的进一步应用。因此，硬质合金通常与韧性钢结合在一起以兼具两者的优点。在各种材料连接技术中，钎焊已成为实现高质量异种硬质合金接头的有效方法。本文综述了硬质合金钎焊的研究现状。详细介绍了硬质合金钎焊接头中用作钎料的材料。研究人员利用铜基和银基钎料进行了大量工作，钎料是硬质合金和韧性钢钎焊接头中最常用的中间层。分析了不同填充金属对钎焊硬质合金接头的润湿性，微观结构，相组成和力学性能的影响。此外，还涉及一系列新开发的钎料，例如镍基高温钎料，非晶钎料和高熵合金钎料。这些新开发的钎料在制造高质量接头方面显示出巨大潜力。最后，回顾了硬质合金钎焊的当前问题，并展望了其发展趋势。分析了不同填充金属对钎焊硬质合金接头的润湿性，微观结构，相组成和力学性能的影响。此外，还涉及一系列新开发的钎料，例如镍基高温钎料，非晶钎料和高熵合金钎料。这些新开发的钎料在制造高质量接头方面显示出巨大潜力。最后，回顾了硬质合金钎焊的当前问题，并展望了其发展趋势。分析了不同填充金属对钎焊硬质合金接头的润湿性，微观结构，相组成和力学性能的影响。此外，还涉及一系列新开发的钎料，例如镍基高温钎料，非晶钎料和高熵合金钎料。这些新开发的钎料在制造高质量接头方面显示出巨大潜力。最后，回顾了硬质合金钎焊的当前问题，并展望了其发展趋势。还涉及非晶态钎料和高熵合金钎料。这些新开发的钎料在制造高质量接头方面显示出巨大潜力。最后，回顾了硬质合金钎焊的当前问题，并展望了其发展趋势。还涉及非晶态钎料和高熵合金钎料。这些新开发的钎料在制造高质量接头方面显示出巨大潜力。最后，回顾了硬质合金钎焊的当前问题，并展望了其发展趋势。

图形摘要