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首页> 外文期刊>Journal of Materials Engineering and Performance >Dry-Sliding Tribological Properties of TiAl Alloys and Ti2AlN/TiAl Composites at High Temperature
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Dry-Sliding Tribological Properties of TiAl Alloys and Ti2AlN/TiAl Composites at High Temperature

机译：高温下Tial合金和Ti2Aln / Tial复合材料的干式滑动摩擦学性能

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摘要

The dry-sliding tribological properties of TiAl alloy and its composite Ti2AlN/TiAl were investigated comparatively in the temperature range of 25-800 degrees C. The wear test results showed the wear resistance of TiAl alloy and Ti2AlN/TiAl composite from 25 to 400 degrees C was poor, but it improved obviously when temperature was above 600 degrees C. Also, 15vol.% incorporation of Ti2AlN particles was beneficial to improve the friction and wear properties of TiAl. Protective oxide layer generated on the wear surface of 15vol.% Ti2AlN/TiAl composite from 25 to 400 degrees C, hence, the wear resistance improved. Ti2AlN particles played a load-carrying role and inhabited the delamination of enamel layer effectively when the temperature was above 800 degrees C. Overall, Ti2AlN particles which acted as hard spots changed the state of wear surface and further provided a second phase strengthening effect, which resulted in the difference in tribological behaviors between TiAl alloy and its composite.
机译：在25-800℃的温度范围内对Tial合金及其复合Ti2Aln / Ti大观进行了干燥摩擦性能。磨损试验结果表明，从25至400度的Tial合金和Ti2Aln / Tial复合材料的耐磨性显示C差，但随着温度高于600摄氏度的温度，它显而易见.15Vol。掺入Ti2aln颗粒的掺入有益，有利于改善Tial的摩擦和磨损性能。在15Vol的磨损表面上产生的保护氧化物层。％Ti2aln / Tial复合材料从25至400℃，因此，耐磨性改善。当温度高于800℃的温度高于800℃时，Ti2Aln颗粒显着并居住在搪瓷层的分层。总体而言，作为硬点的铸造改变了磨损状态并进一步提供了第二相加强效果的Ti2aln颗粒。导致Tial合金与其复合材料之间的摩擦学行为差异。

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