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首页> 外文期刊>Journal of Materials Engineering and Performance >Dry Sliding Wear Behavior of 6351 Al-(4 vol.% SiC+4 vol.% Al2O3) Hybrid Composite
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Dry Sliding Wear Behavior of 6351 Al-(4 vol.% SiC+4 vol.% Al2O3) Hybrid Composite

机译：6351 Al-（4 vol。％SiC + 4 vol。％Al2O3）杂化复合材料的干滑磨损行为

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摘要

In this research work, the dry sliding wear behavior of 6351 Al-(4 vol.% SiC + 4 vol.% Al2O3) hybrid composite was investigated at low sliding speed (1 m/s) against a hardened EN 31 disk at different loads. In general, the wear mechanism involved adhesion (along with associated subsurface cracking and delamination) and microcutting abrasion at lower load. While at higher load, abrasive wear involving microcutting and microploughing along with adherent oxide formation was observed. The overall wear rate increased with increasing normal load. The massive particle clusters as well as individual reinforcement particles were found to stand tall to resist abrasive wear. Besides, at higher load, the generation of adherent nodular tribo-oxide through nucleation and epitaxial growth on existing Al2O3 particles lowered down the wear rate. Accordingly, at any normal load, 6351 Al-(4 vol.% SiC + 4 vol.% Al2O3) hybrid composite exhibited superior wear resistance (lower overall wear rate) than the reported wear resistance of monolithic 6351 Al alloy.
机译：在这项研究工作中，研究了6351 Al-（4 vol。％SiC + 4 vol。％Al2O3）杂化复合材料在低滑动速度（1 m / s）下对硬化EN 31圆盘在不同载荷下的干滑动磨损行为。通常，磨损机理包括在较低载荷下的附着力（以及相关的地下裂纹和分层）和微切削磨损。在较高的负载下，观察到包括微切削和微耕作以及粘附氧化物形成的磨料磨损。总体磨损率随着正常负载的增加而增加。发现大量的颗粒团簇以及单个的增强颗粒都很高以抵抗磨料磨损。此外，在较高的负载下，通过成核和在现有Al2O3颗粒上外延生长而产生的附着性结核状摩擦氧化物降低了磨损率。因此，在任何正常载荷下，6351 Al-（4％（体积）的SiC + 4％（体积）的Al 2 O 3）杂化复合材料均具有比报道的整体式6351铝合金更好的耐磨性（较低的总磨损率）。

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