Hekner Bartosz, Myalski Jerzy, Wrześniowski Patryk, Maciąg Tomasz
Faculty of Materials Engineering Krasińskiego 8, Silesian University of Technology, 40-019 Katowice, Poland.
Materials (Basel). 2021 Jun 6;14(11):3114. doi: 10.3390/ma14113114.
In this paper, the applicability of aluminium matrix composites to high-temperature working conditions (not exceeding the Al melting point) was evaluated. The behaviour of Al-Ti-C composites at elevated temperatures was described based on microstructural and phase composition observations for composites heated at temperatures of 540 and 600 °C over differing time intervals from 2 to 72 h. The materials investigated were aluminium matrix composites (AMC) reinforced with a spatial carbon (C) structure covered by a titanium (Ti) layer. This layer protected the carbon surface against contact with the aluminium during processing, protection which was maintained for the material's lifetime and ensured the required phase compositions of AlC phase limitation and AlTi phase creation. It was also proved that heat treatment influenced not only phase compositions but also the microstructure of the material, and, as a consequence, the properties of the composite.
本文评估了铝基复合材料在高温工作条件下（不超过铝的熔点）的适用性。基于对在540和600℃温度下加热2至72小时不同时间间隔的复合材料的微观结构和相组成观察，描述了Al-Ti-C复合材料在高温下的行为。所研究的材料是由钛（Ti）层覆盖的空间碳（C）结构增强的铝基复合材料（AMC）。该层在加工过程中保护碳表面不与铝接触，这种保护在材料的整个寿命期内得以维持，并确保了所需的相组成，即限制AlC相和生成AlTi相。还证明了热处理不仅影响材料的相组成，还影响其微观结构，进而影响复合材料的性能。
