Compressive and wear properties of Al2O3p/high manganese steel composites with a spatial lattice architecture

Kou, Baohong; Lu, Dehong; Gong, Wenhao; Wei, Shaosheng; Jiang, Chaoyu

doi:10.1016/j.mtcomm.2022.104159

Cited by 1 publication

(2 citation statements)

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“…Therefore, if the shape of the hard phase regions is changed to spheres, the stress concentration phenomenon will be completely eliminated. For example, Kou et al [ 31 ] studied a composite with a spatial lattice architecture and spherical hard phase regions at the millimeter scale. The results show that the strain of the hierarchical composites reaches six times higher than that of the common composite, with a yield strength 79.5% higher.…”

Section: Discussionmentioning

confidence: 99%

“…This method can improve the accuracy of the architecture but can only be applied to architectured composites where the soft phase regions and the hard phase regions are It cannot be used for architectured composites where one of the soft phase regions and the hard phase regions are continuous and the other is dispersed. For this purpose, Kou et al [31] connected several ceramic preform balls in series with a steel wire to form a sugar-gourd skewer, which was placed in a casting cavity to finally prepare a spatial lattice architectured composite by pressure infiltration technology. Obviously, this method can only be applied in research and does not have feasibility for large-scale preparation.…”

Section: Discussionmentioning

confidence: 99%

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Microstructure and Properties of TiCp/Fe Hierarchical Composites Prepared by a New Pressure Infiltration Method

Zhao,

Lu,

Wang

et al. 2024

Materials

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TiCp/steel composites are conventionally produced via powder metallurgy. In this paper, a liquid pressure infiltration method was developed to prepare a kind of spherical hierarchical architectured composite, in which spherical TiCp-rich hard phase regions were uniformly dispersed in TiCp-free soft phase region. The microstructure and mechanical properties of the architectured composites were carefully studied and compared with the common composite, as well as the effect of TiCp fraction on the properties. The results show that architecturual design can effectively improve both the toughness and strength of the composites. With TiCp content increasing from 30% to 50%, both the bending strength and the impact toughness of the architectured composites first increase, then decrease, and reach the highest at 40% TiCp. The highest impact toughness reaches 21.2 J/cm2, being 6.2 times that of the common composite and the highest strength being 67% higher. The pressure infiltration method possesses adaptability to varying shapes and sizes of the products, allowing for large-scale preparation. Therefore, for the first time, the combination of pressure infiltration preparation and architectural design was applied to TiCp/steel composites.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%