The research paper presents the impact of the scandium additive and various conditions of the heat treatment on copper mechanical, electrical and heat resistance properties. The performed research works included manufacturing of CuSc0.15 and CuSc0.3 alloys through metallurgical synthesis with the use of induction furnace and following crystallization in graphite crucibles at ambient temperature. Additionally, a CuZr0.15 alloy was produced as a reference material for previously synthesized Cu–Sc alloys. During research, the selection of heat treatment for the produced materials was conducted in order to obtain the highest mechanical–electrical properties ratio. Materials obtained in such a way were next subjected to thermal resistance tests. Parameters of thermal resistance test included temperatures from the range of 200–700 °C and 1 h of annealing time. The research has shown that CuSc0.15 and CuSc0.3 alloys have higher heat resistance after their precipitation hardening compared to the Cu–Zr alloy. The paper also presents microstructural research of the produced materials, which showed that alloying elements precipitates are mainly localized at the grain boundaries of the material structure.

中文翻译：

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Cu–Sc和Cu–Zr合金的机械和电性能研究

该研究论文介绍了additive添加剂和各种热处理条件对铜的机械，电气和耐热性能的影响。进行的研究工作包括使用感应炉通过冶金合成制造CuSc0.15和CuSc0.3合金，然后在室温下在石墨坩埚中结晶。此外，还生产了CuZr0.15合金作为以前合成的Cu-Sc合金的参考材料。在研究过程中，对所生产的材料进行了热处理选择，以便获得最高的机械电性能比。接下来，将以这种方式获得的材料进行热阻测试。热阻测试的参数包括200–700°C的温度范围和1 h的退火时间。研究表明，与Cu-Zr合金相比，CuSc0.15和CuSc0.3合金在沉淀硬化后具有更高的耐热性。本文还对所生产材料的微观结构进行了研究，结果表明，合金元素沉淀主要位于材料结构的晶界处。