ABSTRACT Tools for machining are exposed to high loads, wear, and elevated temperatures. Commonly, such tools consist of cemented carbides and tool steel. To combine the advantages of both materials, high-quality-joints with high strengths are desired. When brazing these materials, the main challenge is the mismatch of the Coefficient of Thermal Expansion (CTE) and the poor wettability of cemented carbides by molten filler alloys. In this regard, the feasibility of two custom-made alloys (CuNi12Si5, CuNi12Si5B0.4) was analysed. Besides being a cost-efficient alternative, these alloys offer the possibility to modify their mechanical properties by precipitation hardening to reduce stresses within the final joints. Thus, this paper shows that a temperature of 1060°C is suitable for wetting and brazing tests on different substrates.

中文翻译：

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钎焊用可硬化铜基合金的润湿行为研究

摘要 用于加工的刀具暴露在高负荷、磨损和高温下。通常，此类工具由硬质合金和工具钢组成。为了结合两种材料的优点，需要具有高强度的高质量接头。钎焊这些材料时，主要挑战是热膨胀系数 (CTE) 的不匹配以及熔融填充合金对硬质合金的润湿性差。在这方面，分析了两种定制合金（CuNi12Si5、CuNi12Si5B0.4）的可行性。除了是一种具有成本效益的替代品之外，这些合金还提供了通过沉淀硬化来降低最终接头内应力来改变其机械性能的可能性。因此，本文表明 1060°C 的温度适用于不同基材的润湿和钎焊测试。