Abstract
In this paper, it is intended to analyze the influence of coarse grain (CG) phase on mechanical properties and wear performance of Al–2Cu-4 wt% B4C trimodal composite. Trimodal ultra-fine grained (UFG) composites with 30 and 50 wt% aluminum coarse grains (4-66-30) and (4-46-50) were prepared using powder metallurgy and hot extrusion. Wear tests were conducted for normal loads of 20 and 50 N at a sliding velocity of 0.6 m/s at room temperature. Results revealed that there was a direct relationship between the CG content and the plastic deformation of worn subsurface. Moreover, by adding 50 wt% CG, wear rate reached to around 0.02 × 10−3 (mm3/m) and plastic deformation increased significantly. Investigations on the microstructure indicated that wear mechanisms of the trimodal samples were a combination of abrasive, adhesive, and delamination wear in the tribological layer.
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Alizadeh, A., Maleki, M. & Saessi, M. The Influence of Adding Coarse Grain Phase on the Tribo-Wear Characteristics and Mechanical Properties of Ultra-Fine Grained Al-2Cu-B4C Trimodal Composite at Room Temperature. Trans Indian Inst Met 73, 1985–1997 (2020). https://doi.org/10.1007/s12666-020-02012-9
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DOI: https://doi.org/10.1007/s12666-020-02012-9