Influence of nano-Si3N4(P) hybridization on the mechanical and quasi-static compression behaviour of AA6082-Metakaolin composites

IF 0.7 4区 材料科学 Q4 MATERIALS SCIENCE, MULTIDISCIPLINARY
Renjin J Bright, G. Selvakumar, P. Hariharasakthisudhan, M. Sumathi
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Abstract

This work studies the mechanical and quasi-static compression behaviour of AA6082/Meta-kaolin composites hybridized with nano-silicon nitride (Si 3 N 4 ) particles. Hybridization with nano-Si 3 N 4 particles was intended to improve the ductility of the composites. The composites were manufactured using an ultrasonication-assisted stir casting process. The weight fraction (wt.%) of Metakaolin was maintained as 7.5 wt.%, and the nano-Si 3 N 4 particles were added by varying their wt.% from 0.5 to 2.5 % at the increment of 0.5 %. A premixing technique was adopted to blend the Metakaolin and Si 3 N 4 reinforcements to improve their wettability and dispersion in the matrix. The tensile properties and microhardness of the composites improved with the incorporation of nano-Si 3 N 4 particles up to 1 wt.%. The compressive strength was higher for the AMC with 1.5 wt.% Si 3 N 4 . The workability of hybrid composites was studied by the cold upsetting process where the composites were subjected to quasi-static compression.
纳米si3n4 (P)杂化对aa6082 -偏高岭土复合材料力学和准静态压缩性能的影响
研究了纳米氮化硅(si3n4)杂化AA6082/元高岭土复合材料的力学和准静态压缩行为。与纳米si3n4粒子的杂化旨在提高复合材料的延展性。采用超声辅助搅拌铸造工艺制备复合材料。偏高岭土的质量分数(wt.%)保持在7.5 wt.%,纳米si3n4颗粒的质量分数(wt.%)以0.5 ~ 2.5%的速度递增0.5 %。采用预混法对偏高岭土和硅氮化硅增强剂进行共混,提高了它们在基体中的润湿性和分散性。当纳米si3n4颗粒掺入量达到1 wt.%时,复合材料的拉伸性能和显微硬度得到改善。添加1.5% wt.% si3n4的AMC的抗压强度较高。采用准静态压缩冷镦工艺研究了复合材料的可加工性。
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来源期刊
Kovove Materialy-Metallic Materials
Kovove Materialy-Metallic Materials MATERIALS SCIENCE, MULTIDISCIPLINARY-METALLURGY & METALLURGICAL ENGINEERING
CiteScore
1.20
自引率
14.30%
发文量
36
审稿时长
3 months
期刊介绍: Kovove Materialy - Metallic Materials is dedicated to publishing original theoretical and experimental papers concerned with structural, nanostructured, and functional metallic and selected non-metallic materials. Emphasis is placed on those aspects of the science of materials that address: the relationship between the microstructure of materials and their properties, including mechanical, electrical, magnetic and chemical properties; the relationship between the microstructure of materials and the thermodynamics, kinetics and mechanisms of processes; the synthesis and processing of materials, with emphasis on microstructural mechanisms and control; advances in the characterization of the microstructure and properties of materials with experiments and models which help in understanding the properties of materials.
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