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Fabrication Technique and Characterization of Aluminum Alloy-Based Porous Composite Infiltrated with Babbitt Alloy
Journal of Materials Engineering and Performance ( IF 2.2 ) Pub Date : 2020-06-18 , DOI: 10.1007/s11665-020-04891-x
Lenko Stanev , Mihail Kolev , Ludmil Drenchev , Boyko Krastev

Aluminum alloy-based porous composite skeleton infiltrated with babbitt alloy (infiltrated skeleton) is investigated in this paper. The obtained material is characterized with respect to its microstructure, compressive stress–strain curves and tribological parameters such as linear wear and volume loss. The composite skeleton is produced by replication method with salt (NaCl) particles as space holder and Al2O3 particles as reinforcing phase. This salt preform is infiltrated with Al alloy and afterward the salt particles are leached to obtain composite skeleton. Then, the skeleton is infiltrated with babbitt alloy by employing squeeze casting technique. The structural, mechanical and tribological properties of the obtained composite are compared with nominally nonporous babbitt. It is concluded that the infiltrated skeleton possesses superior properties in comparison with the babbitt in terms of compressive behavior and tribological properties.



中文翻译:

巴氏合金渗入铝合金基多孔复合材料的制备工艺及表征

本文研究了巴氏合金浸渗的铝合金基多孔复合骨架(浸渗骨架)。所获得的材料的特征在于其微观结构,压缩应力-应变曲线和摩擦学参数,例如线性磨损和体积损失。复合盐骨架是通过复制法以盐(NaCl)颗粒为空间载体和Al 2 O 3制成的颗粒作为增强相。该盐预成型件被铝合金渗透,然后将盐颗粒浸出以获得复合骨架。然后,通过挤压铸造技术使巴氏合金渗入骨架。将所得复合材料的结构,机械和摩擦学性能与名义上无孔的巴氏合金进行比较。结论是,在压缩行为和摩擦学特性方面,与巴氏合金相比,渗透骨架具有更好的特性。

更新日期:2020-06-19
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