Osuch Piotr, Walkowicz Monika, Knych Tadeusz, Dymek Stanislaw
Department of Metal Working and Physical Metallurgy of Non-Ferrous Metals, Faculty of Non-Ferrous Metals, AGH University of Science and Technology, al. A. Mickiewicza 30, 30-059 Krakow, Poland.
Department of Surface Engineering & Materials Characterisation, Faculty of Metals Engineering and Industrial Computer Science, AGH University of Science and Technology, al. A. Mickiewicza 30, 30-059 Krakow, Poland.
Materials (Basel). 2018 Jul 19;11(7):1239. doi: 10.3390/ma11071239.
Al-Mg-Si alloys are used not only as construction material, but also as a material for electrical conductors. For this application, it is crucial for the alloy to achieve a balance between strength and electrical properties. This is achieved in practice by a combination of strain and precipitation hardening. The current paper focuses on a heat treatment procedure in which the EN AW 6101 alloy is cooled by a flowing air stream from the solutionizing temperature down to the artificial ageing temperature. The proposed procedure, unlike the common heat treatment leading to the T6 temper, allowed for the precipitation of the coarser β" phase with the presence of relatively wide precipitate-free zones. The age hardening response was investigated by Brinell hardness measurements, eddy current testing and microstructural observations using transmission electron microscopy (TEM). The applied heat treatment resulted in slightly lower strength (compared to the T6 temper), but improved electrical performance of the alloy.
铝镁硅合金不仅用作建筑材料，还用作电导体材料。对于这种应用，合金在强度和电性能之间取得平衡至关重要。在实际中，这是通过应变和沉淀硬化相结合来实现的。本文重点研究一种热处理工艺，其中EN AW 6101合金通过流动的气流从固溶温度冷却至人工时效温度。与导致T6回火的常见热处理不同，所提出的工艺允许在存在相对较宽的无沉淀区的情况下析出较粗大的β″相。通过布氏硬度测量、涡流检测以及使用透射电子显微镜（TEM）进行微观结构观察来研究时效硬化响应。所应用的热处理导致合金强度略低（与T6回火相比），但电性能得到改善。
