Microstructural and Mechanical Improvements in A356 Composites on Incorporating Polymer Derived Ceramics Through Ultrasonication at Semi-solid and Liquid State

IF 3.3 3区材料科学 Q3 CHEMISTRY, PHYSICAL

Silicon Pub Date : 2025-07-10 DOI:10.1007/s12633-025-03371-y

Arulpandian Palanisamy, Nagaraj Chelliah Machavallavan, Dhanasekar Ramalingam, Kumaravel Sundaram

{"title":"Microstructural and Mechanical Improvements in A356 Composites on Incorporating Polymer Derived Ceramics Through Ultrasonication at Semi-solid and Liquid State","authors":"Arulpandian Palanisamy, Nagaraj Chelliah Machavallavan, Dhanasekar Ramalingam, Kumaravel Sundaram","doi":"10.1007/s12633-025-03371-y","DOIUrl":null,"url":null,"abstract":"<div><p>This research investigates the fabrication of in-situ A356 matrix composites reinforced with polymer-derived ceramics via ultrasonication at semi-solid (620 °C) and liquid-state (720 °C) temperatures. A fixed volume percentage of 2.5% cross-linked polymer was injected into the molten A356 using ultrasonic-assisted stir casting. Microstructural analysis revealed a significant grain refinement in the composite fabricated at 620 °C, with grain sizes approximately 30% smaller compared to the 720 °C composite and the as-cast A356. XRD analysis of the composite synthesized at 620 °C did not manifest an Mg<sub>2</sub>Si peak, implying the likelihood of this phase formation only at temperatures surpassing 650 °C. The 620 °C composite also exhibited a 44% increase in hardness compared to the 720 °C composite. While the yield strength of the 720 °C composite showed a marginal improvement, the 620 °C composite demonstrated a substantial 20% increase in yield strength without a noticeable reduction in ductility, attributed to the uniform dispersion of SiOC particles. This study highlights the benefits of combining ultrasonication and semi-solid processing for enhancing the microstructure and mechanical properties of A356-SiOC composites.</p></div>","PeriodicalId":776,"journal":{"name":"Silicon","volume":"17 11","pages":"2715 - 2727"},"PeriodicalIF":3.3000,"publicationDate":"2025-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Silicon","FirstCategoryId":"88","ListUrlMain":"https://link.springer.com/article/10.1007/s12633-025-03371-y","RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"CHEMISTRY, PHYSICAL","Score":null,"Total":0}

引用次数: 0

Abstract

This research investigates the fabrication of in-situ A356 matrix composites reinforced with polymer-derived ceramics via ultrasonication at semi-solid (620 °C) and liquid-state (720 °C) temperatures. A fixed volume percentage of 2.5% cross-linked polymer was injected into the molten A356 using ultrasonic-assisted stir casting. Microstructural analysis revealed a significant grain refinement in the composite fabricated at 620 °C, with grain sizes approximately 30% smaller compared to the 720 °C composite and the as-cast A356. XRD analysis of the composite synthesized at 620 °C did not manifest an Mg₂Si peak, implying the likelihood of this phase formation only at temperatures surpassing 650 °C. The 620 °C composite also exhibited a 44% increase in hardness compared to the 720 °C composite. While the yield strength of the 720 °C composite showed a marginal improvement, the 620 °C composite demonstrated a substantial 20% increase in yield strength without a noticeable reduction in ductility, attributed to the uniform dispersion of SiOC particles. This study highlights the benefits of combining ultrasonication and semi-solid processing for enhancing the microstructure and mechanical properties of A356-SiOC composites.

查看原文本刊更多论文

半固态和液态超声改善聚合物衍生陶瓷A356复合材料的组织和力学性能

本研究研究了在半固态（620℃）和液态（720℃）温度下通过超声法制备聚合物衍生陶瓷原位增强的A356基复合材料。采用超声辅助搅拌铸造的方法，将固定体积百分比为2.5%的交联聚合物注入A356熔体中。显微组织分析显示，在620℃下制备的复合材料晶粒细化明显，与720℃的复合材料和铸态A356相比，晶粒尺寸缩小了约30%。在620°C合成的复合材料的XRD分析没有出现Mg2Si峰，这意味着只有在超过650°C的温度下才有可能形成这种相。与720°C复合材料相比，620°C复合材料的硬度也提高了44%。720°C复合材料的屈服强度略有提高，而620°C复合材料的屈服强度提高了20%，但延展性没有明显降低，这归功于SiOC颗粒的均匀分散。本研究强调了超声和半固态加工相结合对提高A356-SiOC复合材料的微观结构和力学性能的好处。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

Silicon CHEMISTRY, PHYSICAL-MATERIALS SCIENCE, MULTIDISCIPLINARY

CiteScore

5.90

自引率

20.60%

发文量

685

审稿时长

>12 weeks

期刊介绍： The journal Silicon is intended to serve all those involved in studying the role of silicon as an enabling element in materials science. There are no restrictions on disciplinary boundaries provided the focus is on silicon-based materials or adds significantly to the understanding of such materials. Accordingly, such contributions are welcome in the areas of inorganic and organic chemistry, physics, biology, engineering, nanoscience, environmental science, electronics and optoelectronics, and modeling and theory. Relevant silicon-based materials include, but are not limited to, semiconductors, polymers, composites, ceramics, glasses, coatings, resins, composites, small molecules, and thin films.